NATIONAL BUREAU OF STANDARDS REPORT

2163

MOISTURE-RESISTANT COATINOS FOR WALLS

OF STRUCTURES USED FOR STORAGE

by

Edvard R. Oglio and William C. Cullen

<NBS>

U. S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
U. S. DEPARTMENT OF COMMERCE

Charles Sawyer, Secretary

NATIONAL BUREAU OF STANDARDS

A. V. Astin, Director THE NATIONAL BUREAU OF STANDARDS

The scope of activities of the National Bureau of Standards is suggested in the following listing of

the divisions and sections engaged in technical work. In general, each section is engaged in specialized research, development, and engineering in the field indicated by its title. A brief description

of the activities, and of the resultant reports and publications, appears on the inside of the back

cover of this report.

Electricity. Resistance Measurements. Inductance and Capacitance. Electrical Instruments. Magnetic Measurements. Applied Electricity. Electrochemistry.

Optics and Metrology. Photometry and Colorimetry. Optical Instruments. Photographic

Technology. Length. Gage.

Heat and Power. Temperature Measurements. Thermodynamics. Cryogenics. Engines and

Lubrication. Engine Fuels. Cryogenic Engineering.

Atomic and Radiation Physics. Spectroscopy. Radiometry. Mass Spectrometry. Solid State

Physics. Electron Physics. Atomic Physics. Neutron Measurements. Infrared Spectroscopy.

Nuclear Physics. Radioactivity. X-Rays. Betatron. Nucleonic Instrumentation. Radiological Equipment. Atomic Energy Commission Instruments Branch.

Chemistry. Organic Coatings. Surface Chemistry. Organic Chemistry. Analytical Chemistry.

Inorganic Chemistry. Electrodeposition. Gas Chemistry. Physical Chemistry. Thermochemistry. Spectrochemistry. Pure Substances.

Mechanics. Sound. Mechanical Instruments. Aerodynamics. Engineering Mechanics. Hydraulics. Mass. Capacity, Density, and Fluid Meters. Organic and Fibrous Materials. Rubber. Textiles. Paper. Leather. Testing and Specifications. Polymer Structure. Organic Plastics. Dental Research.

Metallurgy. Thermal Metallurgy. Chemical Metallurgy. Mechanical Metallurgy. Corrosion.

Mineral Products. Porcelain and Pottery. Glass. Refractories. Enameled Metals. Concreting Materials. Constitution and Microstructure. Chemistry of Mineral Products.

Building Technology. Structural Engineering. Fire Protection. Heating and Air Conditioning. Floor, Roof, and Wall Coverings. Codes and Specifications.

Applied Mathematics. Numerical Analysis. Computation. Statistical Engineering. Machine

Development.

Electronics. Engineering Electronics. Electron Tubes. Electronic Computers. Electronic

Instrumentation.

Radio Propagation. Upper Atmosphere Research. Ionospheric Research. Regular Propagation Services. Frequency Utilization Research. Tropospheric Propagation Research. High

Frequency Standards. Microwave Standards.

Ordnance Development. These three divisions are engaged in a broad program of research

Electromechanical Ordnance, and development in advanced ordnance. Activities include

Electronic Ordnance. basic and applied research, engineering, pilot production, field testing, and evaluation of a wide variety of ordnance materiel. Special skills and facilities of other

NBS divisions also contribute to this program. The activity is sponsored by the Department of

Defense.

Missile Development. Missile research and development: engineering, dynamics, intelligence,

instrumentation, evaluation. Combustion in jet engines. These activities are sponsored by the

Department of Defense. • Office of Basic Instrumentation • Office of Weights and Measures.
NATIONAL BUREAU OF STANDARDS REPORT

NBS PROJECT NBS REPORT

-20- 1018 January 7, 1953 2163

MOISTURE-RESISTANT COATINGS FOR WALLS

OF STRUCTURES USED FOR STORAGE

by

Edward R. Oglio and William C. Cullen

Floor, Roof and Wall Covernings Section

Building Technology Division

Sponsored by

Bureau of Yards and Docks

Department of the Navy

The publication,

unless permlssio

25, D, C. Such

cally prepared I

Approved for public release by the

Director of the National Institute of

Standards and Technology (NIST)

on October 9, 201 5.

b or In part, Is prohibited

of Standards, Washington

i a report has been spec'fi

ir report for Its own use

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capacity of the costla*; for &len&&;iie& or strotchtag* Diis characteristic is iadiootivo of Urn

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svolaUi# wherever possible the its# of highly

or eoiaplex apparatus*

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V*1 Classicicaiion oi 3tai«plale

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Clep* I* %estlfc* fyp#

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©PtwuXe solvent 4Uiu wialeh &*? contain cuid&a «UtUis«r*

tuob a« asbestos fiber, mineral flour, flake sdea, etc*.

413d p*£»«nts mmh *« fdvmlstm powder, red iron, oalcs, eluron*

gjwen*. ©t©« til® cwrgfcttlc Paso* in this grouping ind^u*

uepfc<,

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loot per i«XX®su

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asterlal# in this class are relatively thin-wxl led. coatings whose spplleetien rrtes ere between 300 and 500 knurrs feet pur gallon* included, in this grouping ere ai paints, light-eeXorcd paints, mA one lacquer*
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an«l ^IpHil resin esftUio&s*

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pert ioaot eharaeter1stles

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felta protective eor*tints, two ®atftods were employed, nmealy,

(I) m|a«are to A«rs4 weathering conditions (fc-s&lngtoc, ••t.

)

*ai <t) axpocura to needersted testa for durability#

*i»*X Outdoor feathering tests

f*X*X reparation of Twt &pmimms

isch comting materiel was applied to twa teat surfaces

for outdoor aapesuref the *&estie* type (Claaa i) mad the

Jaulsieg’ type (Claes’ XXI) ware applied to cinder clock c ue

t&mkam pmelB m& the feint typo (Class XI) was applied

to 00lNMriMtS'HiM»aKi& fcsoard nM alumina® panels.

i’he surf *ee# of the cinder to!oak and aakaatae«aeaeiit

beard were thoroughly cleaned and brushed free of all fersifn

»#$torf before tHa coating material* ware applied. :<o othar

tvmtmmt ves 'given to the teat surface* exempt in the ce.se of the temltlon l/pe (Class XXI)* Here the surface we&

listened with water prior to application ©X the protective,

eeatlng*

fhe surface® of the aiming panels vara prepared 0/

thorough acrohUAg with steel wool, and d* reaainr in e&rwc»-

tetrachloride*

the oatoriels wero then applied to the test surface*,

at the spreading ratoe rseomenbad toy the aanufaeturera

(see few.# 1), toy crushing or troweling, depending upon the

411 t stole* and figures ere attached to this report as

Apreadik B*
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consistency. If* lattices where 6 moe>«»d«d spreading

tn.%u was not available' Urn eoatl&g was applied at a r~t©

to other eeatlng* ol the sa&c general typo*

filter air drying in e well veatiietec room at 7^ - ^0*F

i’or 4 period ox ten days, ttee teat specloen* were exposed

to outdoor weathering.

>*!»£ exposure- Conditions

*U spotieeno for outdoor teste were exposed at sc

•atA# Oi‘ approximately bp 'to the lMvixmt*& on the roof

oX the 2&d«at*J*l Beildinf, &atlei:&l bureau of Standards,

4*ehiagt#&> &• $•, with the eo&teu surface* feeing . out:.*

&*• coated siedor olockfc were placed with, their lower

*<*««« roaUag on the faces of other, uncosted blocks, laic,

directly on the roof deck, while the ether test panel*

(slumiotto Mid asbestos^ament hoard) wore exposed ale-

«*t*4 racks £nh V to f foot above the deck.

ji.i.l desuits of Outdoor exposure ^

aprooraaoe of the seating., after three year* ox outdoor exposure, is described la fable 2.

>•*- iMoiorated feat For Durability

>*k.l Apparatus

exposure 'to accelerated tests for durability wore ja&de

Irx as ,;U«s »vat canalstint; oi & s&a la, centrally located darkea arc, a cylinder, a water apray and

*f* arrangement for automatic temperature control during

the light period. altlMMigk the arc lamp operated on a

e*,.o volt lino, alternating current, the voltage wee roay means of a resistance to 130-13$ wits while the

l»«p« operated at 1$ to 17 aapsre*. an open *Xmi.*m

cyxiQde

r

9 51 la. in diameter end I> .la* la height, equipped with slots to hold the toot specimens and connected to a revolting seeft*niaaf encircled tne l*mp. fno cylinder &*de

on.a resolution in twenty Minutes around the enclosed carbon-

**• *#&$ and each test specimen v»s thoroughly washed l > sprays of Up water <mae In e&ch revolution as u passed

Ui® spray nos&lea* fhe spray nasties wer© located' 'approxi- mately two inches from the surface of the teat specimens*
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*esfc *3pv-cieens /or /.coder&tea inarao-Hity

r .« s$»*el»ens 9 prepared an. the sluntnue paxici« c<*

dpterlSed iii loatlon $*1.1, war® exposed in this apparatus

(Jetton to accelerated test for durability*

&LjMMrar* Coa&lUeBt

£:»« wer^ subjected to & weatherlag cycle

consisting oi *|^msftost«l)r 1? nOnuses of light sna 3

^sinuses of *i£i.alton*eu& light and w»&‘n water in seen 23

eiauies* Jut im the light peried the temperature at tae

muff&&» &£ the panels rose to and w&* MSinta4aed sit 133 j*i.

no attempt was sad© to control the temperature of the tap

eater use*! for she washing* Mm speeii&eu wee changed at

intervals to wm&mmt® iov unavoidable dttfere&ce* o£

petition in relation to the light source*

>•*. A &©suibs of ^posure

’£be sppeeranea o£ ti;« coating® after exposure to this

seedersted test lor durability is described in ‘fable is*

»• vwa&m*

fc*X 4pparstus

0*1*1 I'e&t Ml

in order to eliminate virUUdM caused oy unavoidable

4Uf«r«MWI between epeeinens made frees the sees materiel,

it was thought desirable in detetoisiing the ©fleet of Sipo^ura

on wmier-vefor senteeitea, to replay the east* spaclaso* fchreut.riant the weathering cycles. The ceil (see figure 1) consisted

of « shouldered ring "a* that served »,s a speoimsB holder

»®d « bottom or seel plate *BM

. Xn practice, the circular

speeitte&j cut to proper sisc. was placed on and scaled to

the aaeuider of ring •*» with sufficient hard, water-vapor

resistant we* to insure * good vapor- tight bond. i. : •- ring, wiUi specieen affixed, was then inverted and charged with

desiccant* the lottos plate *1H wee disc inverted and

XeMdletsiy placed on the ua accent-loaded ring ss s cover, hovers leo was qulcbiy n^do of the *hole a&senbXy to its

correct position and the hot too plat© was then seeled (eiicroerystalllns wax) to the soeeinen holder. The as aoabled cell

with desiccant sealed Inside is shown as *6". an aluminum

template **lw of accurately known area aud & centering ring

* W used to sharply define and center the test area

in the sp^eia^n holder*
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on *«$* spaoi&aa aara »«4« by siapiy rd®ovin& the

bottom pint* m& 9w£iuxgiun (i*r«*& o#£i©©fcnt) th* c&il.

-> -is sasdpiU&tiaii cia uot alstturto tha wftpor~tig,iii ««sJL

U^tirs*** tii# n&i.4e£' m& tho gpmimm Mur oia it

daaafit till# $&mAmm itswii.

&*1*1 £ha t tmparativra - bonst&at iftinidity Cfcambar

of w*t*v»»vape)r poxwmmoo saqulra utz

MMlutmam#* oi assistant tanaitions of ure anti

ftiss<y* £0 tecontpliah this a ctblLftai v&s Oooi^uoO »ad

canstrmtoo wUc,; eoatrollftO w*« AVv i / *»* th* raUtivo huaUlit/ at &« *£•; * ihaier tb# condition*.

tto* vapor prassnre vithin th« ohmkor m& o^uir&X^mt to

l*$9$ in* oi oarewry {c&XwXttoiih

b • i* 1 bm&Xocmt

it w«« tieeessjury to employ & timizcsixi which wet» ohmAnsliy inapt* in artior not to £$$&&* ths spacixtm* #»& still

lts6** * i*r«* oafaeity iar sbsorbiftp «tuu heartily. v&x©r. lor

thosa ras sons* &atii &taa vilice ^«£* vio nash* mtppUlwv oy Uio uvifon ba<w*iead Oarp. # bsixi&or« t aa* 9 *** u&*k.

6*2 lost

$s* *e« yy&g$ war* fiMliii to ft naft^shsopytive meat

vtiith h&4 s ralnfclfaly high r«t% oi at* t*r-vapor trmiSoiSEiOi . ^pari^nae hft-it stMrwHf ncfwftvor* that vhssn caruift t.. p -s oi

castings are appllajl to lift ahsarpllvo b&sa* thft r^sultim

••<?ftt«r»v*,p0s pMftdiSM ol fch« systaa it *o*«tfhat nigfctr tHsari * no**-ufciiorptivft b*s« is us&ti. ,Hb this it siod. illoontxiigs soi&oioci from tha t&ra* ol&ssas vara ^iuo

aryll** to m *b*orptxvt «haofc. Siese two wpt. ox tost

^uriscasa warat

1, *oa-*b*orpUv* &*•*. <toanax” potato «n«^t9 o.oi in. in on« #urfft©« having a oat i Mulsh • inis

4ftat«rla|, was not asi^aranUy alloc tad oy imy oi tfea

oi' 4fefti & gvlvmitc pr&svtxii , jri# jpori&aaaoa oi this mtcilal vas iy> arms par aquara »#tan pa* nay

(u.y p«r»s) iinaar tha coftdlUor«s oi tost.

'*• *tmrp%lva baas. Asbostos-ci'nottt beftrtt* X/8 in.

*2 thitkaaaa, having » month surfecv «na eeps^lo

oi *bmrlir>z tha orgarda ioivaatt orr«J at losat ,.ri

or tM mielft ot: tha aaatiftf mt«rl&ls. rha ^ -ica ©i this notarial was 5J<3 gv&x&x par squara sol as* par ^ay (*0. > pam# ) amSar the taat coneitIona-*
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fc.J reparation of lest ^pssiseas

feet spedsieii# were prepared by apply it the co;tt ,t c-JU-'Sh MWfeocs st spree* lag rotes rscaasonceci by their

respective mmCmt«r<sr$. <H»e of the following aetbsds

we# used /or csch soterisl depending upon its tnturei

i* locior aUde ( hostoa-.; fealty 4djustrials lads).

1 . Crashing.

i* frsvsilas (with or withotl & rf»esk).

*• eprsyl&g*

ethods used to apply each coating nr* preset* ted. Xu

fstale 3*

o*H- *i®oel«r&t«0 foot ior &urafellitjr

sad * ter* Vapor ^eresesac^

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.’. h^ny investigations here indicate fchst protective

•naUace* open beiag expozmI to ultra violet radiation ami

water (sunlight and rein during nern&i weathering) unierro

changes in beta their ^tyslcal «wt ehenic U characteri *t ie t: . cl' the Chens** safe edvaat ,*; ;*eou*, wMl« ether# arc not,

wine-i low weti-.*r«vspttr pesteea&ca x.. ol particular si«7.ifi«

•*RC* ifi this study | it was Cesira&U to deterging whi.t

effect v»%ther waula h&vo on this property oi the coatin*

neterWl* fo accomplish this in the shortest possible

tine. the test specimen# ware exposed to accelerated teste

ior aershility and the water- vapor pamsiuieo determined

«*ter selected, iatcrvsl* of esposcre* ihe selected tine <W *«re o, 100. xooo. end £000 hour® for those m c?a * .B<SJ«-eesorptivc sheet (acetate sheet) and

0j 1000. and lyDO hours Tor those on the absorptive typt

si sheet (aseestoe-c^iaent eoejpd).

e#>‘ lest Prosed urea

iiv<i5 method used Xor the del «minst ion o£ water-vapor perne^ice el the protective costings was **s«mtinii> as

outlined in "ftntatlv* Method or. lest for vister-Vapor ^raeeoilHy oi raper f ^perUo&rd* and other i**t

•**t«pi**X«/‘ , **->£!- Oesignaitloii except that the

area of Vie speelaen tested was 11.^6 st,. in. end the detcrmlnaUozis were cede at 100 ‘IV end 82 relative aualalty. scuiffline sero v& ter-vapor pressure XiSido the e@li

l JJ& pressure differential across the film

was i • £9$ in. of nereory (calcuif t^d).
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f 'I ' ,£ <•'**

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Xhe tpmiams were prepared and allowed to dry to

constant might before initial water-v&por pomssms

d&tsmlimtims v«r« autAt. After the initial detereiastions war# -xndtf tao eelit were disassembled , the 6oslec*a.t

reeeveA, and the speeleem; exposed in accelerated we&therin*,

unit (s« i igure *). ffee unit used was a “type 1VKX-X

* eather«3*tfeter” , nsnufeetswed ty the atlas decrtrie Devices

Company, OUcsio, HI* Only one *re f trail; loeatodv viui a# the teuree of radiation und its power eonsna t~ tlm ms app&oxim&i&Xy l*o kilowatts par hour# In erder

to ellolMte the injurious effects of the wash water

wetting the Huttos -acetate fracking sheet, the waatheriia^

c/cl# was altered# S3u» altered cycle eonsistfcd ox fv

feeure oi! to the e*rfca*~4re light followed by c on# hew w&eh with v&ter# .Xbis wt& ae#CK»jtflshsd by resieving the specimens fras the weather-crater m&. plot in.

i

thm la a 'heriiontal position* deter w&s t&eat poured on

the surface ©f thw oofctl^i;. until it *v * leyel vi ;•• tu

*i* oi the spee&sen bolder* +»ft«p eaa boar, the water

we.e ressevod and e&.ch Mrface ri&icd thro© tlaes#

Xu the ceie of the coatings applied to the absorptive shmi (mhoutos^tmmt beard), the conventional cycle of

1? minutes ®£ light ma j minutes of light *swi spr«y w»t«r

in ®4s«h 3CM&lnnfc# period, was mod*

temperature of the wash water, in both cycle#,

was ©pprorlaatoljr 77* r and the water was essentially

mineral and mtsX free having passed through * w Piit-. - /till4

' leeliwailslria Unit prior to use*

6.b Beeta&te of water-vapor Permease® Tests

Xn Table J y the water*vapor prnmmmu of tu co U

materials, as well as those m the has# sheets, «re reported in terse el gramas oi water vapor posing through

the seated awrfi*ee of mm severe aeter In

^

hours and in

v..e 'h wi,'’ h bu'kivt ..* Un. ^0^,1 of

veper, in grains, that will pass through un urea of one

square loot la one hour when there is a waiejvvapor

pressure differential oi one inch of aercur; across the

when test coalitions ere 10^* and oi> relative

humidity, the lollowiiig loramlas awsy he used to convert
0

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t£) P«r»t * 10*32 *

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8««* *'in*r*e« »£«ney 4a tbolr puMlestiOii *Cantics* Uott

Control'1 to do**if/ cooties f&fce two groups a- rollers * TW>tJlliT>lf * * cfcjwMiU of piwoftfci&g

.0* ofxooUvMy ros trieting tho aovosout of v&toar

v wpor froo s. £or^ ox v’&jp#r prossor# to ©no

of losoor v&jpox- prossur* sod pos^tting not sjar# to onto |TUA of woior ¥s$or to p*#* through on#

i*t*tOP* root in Qioo ooupp wAmmo thm w&fcor oopor

ppossuro &UTor<8u:tiol lit g&o istefc of fnogwwti& whoa

iostod by o dry eup oo%aod«

* ' M*U\ria o&poaio of jwovoatju^ ur

and poswUtUiif too toiuioniooion or

*t JtO&ot 3 gruloo of tfotor »&j>or p*r e<; 4&?t foot.

m&%£ tiw ooc%d4Mo&$ j«*«»b dooorikod*

Sk* rowiltg of t&o Various aotoiwija&tiofc* of uator- ^®wr MUM ®T0 fiv«5S in ... 3 , and 3a.

7* mzaxi&mmm tmi$

/.l im&itjmr mt M*w (ItaiV)

*ii*s of «* seating to oxbiiiit flew was OotoorUn

* ****+«* aJUplo aftttiatf «rM<% u*«4 m luuorotorloo eonJ****1 tootiog or&taxJLe protect!v« ^Ki aooor&tlv* «& t-

*»€*• in oooonoo th« aotiioo oami&«i* Iju uMstiriiiy ilov oi

a «o*Ui*Cf vtltott «atpe$*<* v#rU«*Uy# nt 140»X.

X1i« coating notorial* wore wpliw &% th# **ouf&etttr*r rmtmmmM spreading ratos to Moan stool panels (a- ./ i»-

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tang* oi two lack** l'M» tllfe wc/. ttd*o of the pfcuul* fhu

OfMNtloO&e we®* plats&& hi a hox'laQsAel position iox feoxa*

ii «> well v«Ktiicii«A |#» *i /0»£> J*f • 4t ttm aitA of ti-JU

ooxaaitlcKlKs period, the panel w&s itiupoesWMl vertically far

five dour* iii &a ovaa oaJiital&oA at lw -2*h* xt this end

cl’ thio oxpcMntro juried, the panels were possoved iron ti<*

oven, fellow^ to cool, slid for flow* "Shi* ties

ludioxtert h? rippling of the aiipfaeo fils, £rlppfe*w of the

ce*iin& froo the jifcaol, or Oioj^eaoeat oi the thread fro.;

XU ori^imJl position. For roenlta oX tuo flow text, wXSofcio hf talwtei* 1*

7*1 Behavior et 0*t Of ' ;:

-. }

ffee oetavior of the costing when subjected to

ot 3*4 02*r) used ex m ijadioxtiox of tU

, to withstood r^iur# stresses k.. a

viarstlan, expansion and contraction, or cr© eking of the

sub-jirete*

J&i »m& ap&eimm vhick were osed in . uh&vior

*fc fc$*t CiW*l) u«t {sec Section 7*1) aiwu iii Uxix

toot* when hk* linrl inspection. of the vm&l® v*s cae~

ploien oftor tau* Befaotritr ot cd# C (140* * ) toot, the/ w«.iv»

it vii 4eo both (Q*G f 31s**') for a i&riod ox -*.>

Bow*# rh«gr were gwmvm and 1 .«Mf4i&Ul/ Lora it**, eostcu

side up | over x ou*-X»ch Ms&rel in approxlsstelp two

see&ads* the speei&ans wore for orsekitag of the

eofetln*. aiaS. lees of fission to Urn steel piaj&el.

Heo r«oulU of title tool ero pr^sontod la foh&o

toluidu 2*

7*3> «4hooloo to «JUo»lxuit foil

fo ao of tko fpm*M*j*t alpUfleeiioo. the e«Ui«eioa of

the wmtootlvo ooetXup eXiould U» detemi£od vkm* the coat**

Xi*.^ Xa sypyplloU to tho aurlfw aa whicx- it la to «••» uaed*

kOw«for» elaoo thie wee iesprv.ctAot*! fo-: loLorii aor/ #v. la«-*

ti«Mit it we* decided to meerur* edhesicwi when Vii* eo&tinr; s aooou , &m*m mhnaa wee

ohoooc* einew it |tonooeeoe Uioew ro^uleitae*

la o«olx cm** the ooetlilo wee applied, at the &eauf ^ o*

tar«jp*e oeoonnttadod ag^otia# reto, to /- t/ ciw^a , 0*00*»«*iaeh elminussi foil, Usvltt^ kriCOa.t«d ar©« klon.
* Jii h&m #£»* 4M»* *« #r*J ©#i*£

X.V-

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n

oft* edge measuring 1 in* wide end 1M i*w Ioa*. «fisr

*ir~drjfing 1b « well ventilated roo* at 70*40* f tart II

cm*$m% weight w*s *tt*lnod, the cee tia$ was carefully

oat throw# to the foil. the eat weo »&<:« per *.llel to

tii* I^-tnci IkMUen and e&* inch fra* the junction of

tfce coated and foil# the foil hue folded fe&ek

iX/* slot*g this Xiao of eat# it shoot of 15 li>» sephfilietareteti 1«U| 9- h; A 2-in* , wee t^on eeeeutei to the

Of ll-ift# OO' tod section of tne foil with ? waters

soluble flue mUentiAg to the requirements of i-'edorsl

dfeeifleetioBk # to proasei© cOo;i ootid in; % ,-u-Xt

weight m*& placed cm the ap*e&%m &nd aHoeed io renoin

for i-O'ur hours. stripe two i.ne,nm wle* ware toe a cut

parallel to tan 9~meh d Ingasion «ne allowed to «go for

1* nosers to permit final sotting of the ^lue# .in this

seneer* tost strips &* toy <Hi*# in &is© wore ©Olsined

«lth s sooted end eeeeoted portico measuring £- by 5-in*

end fm ends of felt etui foil eeaserlng 1«* ay Win*

Bse sloftlniss foil was cerefslly stripped fra* the

©Or.Uf«g t ay hm&f * 4klet*»ee of i/h in. fra* the cut

previously node, mo free e£«S of the felt m* elseped

in the upper jav of s tmeile strasgth oeoi-il&o mai the

froo of the foil in too lower Jew* fhe. foil *«£

tMma stripped JCnk the eootliie to within 1/2 ie. of the

0**0 el t-ae Specleea, line toapors tor*. norin* tne test

**» ?? **** end the l«v* sowed «t a rate of 12 •! la#

per alnato*

,'uts msxlaiu poll, in pounds per two-in. strip,

necessary to strip the foil fro® the ©opting wee uetsrmlaed lor eeeft speeigsea end the results are presented

In fo&Le h, uolusm y.

feooilo brooking btrsagtls

tensile Orooiluo strength •eostaeaeate were aud*

ns *n Xadlcfttleo of the resistance of tie* coatii* ,s to

tensile forces tesidia,.* to rupture tliOK# fhesn measure-

**n&* were node 0® faros tilas of the seating aaterJUls.

two methods had to be employed to taaJce free films.

f or class I easting** the oateKUl* were sailed, at ins

iaftttuufecturor , » reoteasenaed spreading rate, to tne foasteci

surfeoe o; Ui»;fcrii. paper# 0;e coaiixi** «ero «01owea v; ?ir> in e well- vofttuls ted rows until suostn ntiaily coasunt
*» X **

i-rru . Wi ''•***' •«•!* •-»* '• f*

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weight wa* attained* - tr-ip * *** e-jring . ~ t

•*-.•. . ewt from tn* aofctei *M firia® anti the trtm film

»#p#ret*d £ro*i th# gusw^fi pftp«r by •Dskin^- u water ittwl

stripping* the free film# Urn# obtained were thoroughly

v**ha* vmk fir

fhe wife## II a&teriftl* war* properefi in

tfcit# roa* m&nnnr except that eelXephfcn# iheetfc, stretched

over flat brfe## 9l»Ust were «##fi la pl«ee of the pu *-d dextrin paper.

Iha ..- ay £~in* free film# prepared a# above were

pleeec lit * t*n*lle etrengtfc maii&i witn thsit **«#

parallel to the direction of pull. rue teapetxture fiurii

the t##t we# ?7 *f'*d ttafi the J&w# of b&# -iMCkiU.-i .UOV4.4 t rate #1 i; *1 .m* .per minute*

#*x1«uei pull | 1» lb, per f~iiw #fcrJp t required to

rupture the tfwrikm w*# *s the tensile fereefcing:

etraagth -und lit### data are recorded in fable 4., Ooluan 4*

f*f ;irl£glttj$

fua aspect# 0i bridging should be considered* (1) the

ability to bridge over * g&p9 hole* «p#e#f #t#« y end she

durability of the bridge ©nee forms* the la aerator: wo#

not equipped with the heavy-duty span*/ f&dlitice v>ach .• &eeoe«*ry for Sot^mining bridging ability) u^ra'or-. • sue-:-. *#*t* war# not msfie. It tre# fdt that «a "on t: c Jot1' .v* ;. - teat* test would be uort praetlcral* Ehit could &«* fiaca by

applying the «9iUn$ uaterlsi* with the o^vfLmmt i-.>t ir

actually ueefi on the Jot, to a fr&a# oontaininp & specified

number of opening# of specified sire, a r«qi».lr^«nt be to

th# -oisiXmm nuKtber of opening# e^preeeec »• a

that are to 1® bridged *t the r^ommmd «d «pa?tj.s4iit^ rate,

aight fc# ®p«alfi«fi for scooptanc^ . For th# iafoi t.- m

of -rna^iug fiuTftbillty I 1 t##t #;.•* nsvix-c Il>

mvmt'-z’m of th# Cias# I (Muatia typu ) aoatlaga. - fcrten

description of this t«#t follow#*

?*y#1 Procedure

fh-» material under test war »ippl led to gurofted daxtrle

paper at th# maaufcoturtrr*# r#o«#«#nfiofi r:.t# and

air dried tor ®m hmr «t 76^0* F. a fo. % salmHOa^ wire

ecjfven &#aaiirlag 1 by fc incuet placed or. the
„ ** ' wv ‘ tl?ta %./*' I 1%

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’u.;tt

I ; • r- viMl i> .i* -.:•/?! •• y»-; ,1 tm ®r:
13

pertiellr mi coating end & tiignt pressure, to prwaote

ut.ppll*2sc. to t-3b^ screen* Xfter the coating, wit , &©j^vWi in position, had dri«d thoroughly (two to throw

day* wore allowed »w tautO, the gWMMyj. d^atrin paper w; * removed In the uwufcl *ae»»er tujd the tett epeeisen dried

at 70*&O^# tor at period of twe week*.

the teat apeeifise&s were user* placed JU& an /.ties single

are accelerated weathering unit such as describe in -wetlor

t*5 5*wu exposed m ItOO hours, the cycle conajUUng of

X? saiiiutes oi arc light ami j isJUmi.ee of both water spray

teiioi light in each tweniyi&thttto period was ai^rd in this test.

7 * 5 ** m&m&lm

fh$ remits were detemined by inspection of the pandig

st tSje ccpireticn cur the XtGQ hours of exposure, tote v«*

taJcun of the nua^er of openings m the wtvm which were no

longer ori&cad ©V*r by the coating, fain nuauei, civihct

by the total misahor oi ejwmtegs in the aereoa ami s-alciplied

ny iOu, g&vs im percentage of bridge failures as reporter

in totals 4, colitm o*

&• Of h^uLfb

&*1 blase 2 Costings (”h* sties'*)

3*1*1 «ater- Vapor frenaaiesion

& e group, the coatings In this cl&sa exhibited low

'. :. qi vrzi^^X&is. lOi . 1 es3&3a )-bet .

* j»j-

>#r aeUaro fecter per 4*y *t XU/’F and - a^-;v,. uO^wx . do*ever, a ttimtaer of exemptions were noted, *y* ioiiowss

h.b.i*. ho. 17 (on asbestos eoftan < ) - >X.o

ho. 51 (on acetate shoot) - y.7

11 ho. B l" * H

) - o.3

to. $4 (« « » ) 7 # c

* Bo. $6 <« * * ) 0.3

ihe generally low rotes obtained with this class of

cost logo are typical oi these natwrlale known <.a wivuoinout

cements and coatings (which noat *<.«>:, «r* of this cl^es are)*

fhis is attributed to the hydrophobia nature of the bitumihoua vehicle* and to the thickness oi the coatings &s ue^d.

xhe one exception, coating ho. BBi# 17 or* iibiftos ceaerit.

is probetaly due to absorption. oi it* vehicle oy the hoard.
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t .. ! rcr i > •• * rfU >

a 94 -^;B£ of.

3 ' •'•• • "

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beteralnetioci ©i treusaisslaj} r&t&s after exposure to

the aeteleraied test for durability (Tatles 3&3a)in4icated

Uwx #«n«r«ily there wore m&XX changes after exposure to

kOOO tiours ©i* acetate sheet. * number of exceptions w«r«i

noted. however, ospecially in instances vhere exposure

osusea such disruption to fils* integrity at alligttorins,

cracking, ^nelsi»|, t»»*$i©ck.iiiUf etc* Indeed, in .. suu&pur

01 instances, the rates 4cer*e»ad slightly*

*11 ««v® costings on asbestos cement showed sosa© rate

imr*-:xm • *' i Ui exposure CkpOO i*eurs) to *h« w... a tiering c;. •..; • deweirep, JLo cmXf one lsit«s«« (*.o. 1) van the increase

j^preei&tol«.

§*1 2 t>utdeor * eethcrin

g

uKC-^pt for eeatisf# IS 17t Xp, £9, 30, $3 *>, t:... aeebors of this class did not show good durability cn cinbfcu

block during the thro* year* of exposure cov^rsd to date,

l Of the sortings blistered (Id hie I) within the

first jfMiv* this was not. totally unexpected sines the trains—

isston rate® oi: these coatings were -Ju *nc>sr £ , ran: -,: -is wire per supers oeter per day under the fiwnrtttlnnt «

test (*«• motion <>.$) anti the wider blocks wore ©p.u* D&ck,^ • *h.is condition permitMl water to ©oak into the *»»^#or*r> an©

ii grate behind Ute costing #uriiu nin periods* it is*

proha fels that during the ti&y periods, under the influence of

• hot, bright sun* this water vaporised ?u*d blistered the

®&m.tlng . figures 3-1** Shti* the costings eftor two years

of outdoor exposure on cinder block*

Considerable teprovesaent in durability tesard outdoor

weather v«s noted vit«m those costings werv- axpo^a: on aiw iw»* in fact| half of fcltart were rated as **fery good” or

better op the basis ef their jieiforatimc* during the three

/ears tills tost he* cowered to date*

•>*1.3 kcoelorated lost For rwshU.lt/

the result* of exposure to the scesleretee test for

durability described in section £.k pnrr Holed, with #o^<*

live exemptions (see Tables k & In), those okt*-u>o© in

outdoor weathering when exposed on eltsalnur^*
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6*1*4 Flow Properties - behavior at hO# C (140*! )

of tue thirty neterlale subjected to this teat (see

Swation 7 . 1 ), twenty-one performed satisfactorily, showin*

not aero than IA,S displacement of the indieetiag thread

*iHd no slide or drlppege fro® the test panel# the reeis indvr showed « thread iMUpLeeeeestt of 0.5 to 1.5 inches am.

• drippofe of 2k to aOf.

to tl elector? performance Its this test Is an indication

that the material is c^p^di# of application to vertical

surf ado# without deleterious flow, dripps-ge^ blistering t etc.

6.1.5 Flexibility - behavior at 0*0 02*r )

Five of the thirty costings tested were unsstlsfaetor

ih this test, rli five developed mw or more cracks with

htfcwiidiuvt di&Lrmtion in ^dhcaion at the tarn oi henf . , no

remaining teent|T»five shoved no cracking or any apparent

loss in adhesion.

Behavior in this test is considered &n indication oi

the expected performance etf a eo&tin .. when swbjected to

vibration* «*pofisl«ri| contraction or other stresses caused

wp eusng^s in the substrata* batlsractory performance here

indicates &orm Ability to withstand, without rupture, the

effects of such stresses.

&.1.W dfceeion

ddhesieeMee of a coating material is influenced by

the netuse of the nonvolatile vehicle arid the amount of ainem! stabiliser, among: other factors. The costings included in this climes varied consid erehiy in the amount

oi aUWiisw and to a so, ewh&t lesser extent in the

nature of' the Use matoriel employed ir formulation. It

w&s net surprising, therefore, that adhesion as determine,

in section /*3| rented free 1.0 to 10 .

c

10. ,r interestir

*10*1 ight was revealed oy the feet that a rood correlation

sale- ted between adhesion and performance ii* the test “ wensvioi* at .t* 1 *’ . Ihoee with the lowest adhesion valuer

U.J lb. or i ts) gave the poor performances (failures) In the Bw*h&vior at $**M* test.
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it furtherefore* this pr6p«rt> of bituminous substands

s

f frea which oast &«ifcar* of the ci*s* I GO*ti*,» yiw f«BwuX&t«ft # is & tmtilou of h&rdaesg. othop things

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3

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'fh^ results (T&fcle h) %hm&& that jabber# of this

olsss varied as &ue& Uk this eh&rssterlstl* as in adhesives'113*' although no established relationship exists between

these two properties of &UOetancefu eleven of tew tweatv-

**!?« coating# iasted.ss described in uctioj* 7.4, for

osfceslvo&a## gave values lowor than 5 lb. with the values tm the rsftgifciag eighteen ranging front 7.3 to 1 . it. - S*X.8 bridging &urability

- t«si for bridging -ufsidlitjr ( -action 7 o) w« * w*.

on 'fWftteag of the coating* in this cl&as. 3* rostiU*

(iodic fcv) that bo general tread fisted oxo^pt

U;. i t:a sickest <4,*, a fee* tu awrx'UU.

foaid that the bridges, in ton. of the seventeen

oo&t+&$9f survived 1600 hours of exposure to the aecoie- rated tost iof durfeBiiit^. failure# of tbs kridg** resn-wu

Xross 1C to 10w,7

: for tfe# rensl&lhg seven*

S-tS Ci&ss XI Coatings (Paint Xyp#)

b*£*l wstotwTspor Xra&s&Uslon

oantlMS of this cl&gs exhibited the highest trans-

?af*£°u (ASfclj p) oi the three groups included U- tha

« vuu.jr * .-xcspt for gvo i-'tjaaUors ol the v,roup* tnusv rates r^igad iion iQ.p to tf.l graius per, square niter par d#>.

es,g options, wore has. 23 end 4g, and their re toe a ere «bo *•* grai&s per square aster per day* r^pacUvei . undoubteu*f f the r <&stlv&iy high pvrm&wC4a shown h? these coatAiigs us a group Is duo to the high spreading ratas employed ti well as to their forsiillation.
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bspomtro to th* Accelerated durftfcility best (section

«•§) had & flails# effect an the transmission rates UcUles 3 &

a) thi* elt-ce as on the Class coatings. • so rate

changes occurred during the cycle In which acetate sheet

was the boohing for the sorting. Here again son# were in

the dircetioo of «n Increase in rate while others were

in the opposite direction. boaeititat different results

wsr* obtained on asbestos ee&ent. In this cycle, all

four emetines that were Ueted showed an laereece* 'fh.U

**« large for thro# of the costings md moderate in th#

e&se of th# rtm&lnlixi on#*

1 .X*2 Outdoor i*cctticrl*g

the costings of this class wer# considered too ttiin

ter application to th# rcu£H*texturod surface preeentod

by cinder block. therefore, for outdoor exposure, applies* iion was code on esbostoc’-eene&t heard as & masonry mfics

•*>*£ aluaifUK* «s stated in section $.1.1. of the

twelve coatings in this else# nsve shown little or no

offoot (fable £) jfrea the three years of outdoor exposure reparsed to date* the seven include fire saiBslnurs f*ir.u. % syabheile rosin bees paist & floor enamel. three

**fel&iied esterasel? pass durability curing trio period.

the raining two showed a little ©ore than aver*-*

effect fre* th# wither.

demo decrease in durability toward outdoor weather tn>

w&» noted whin this class w#a on aluasinurc. This

vts apparently cause# by a substantial deeresse in adhesion

and by an increased tendency toward alliestaring of too

sffooted coatings, Actually, four uuiterials exhibited less

durability, six showed equal durability, while two appeared

wo be ssore durable on asbestos eemaet (fable <).

•; *2*1 seeclcceMI test for durability

the results of exposure to the accelerated test for

durability showed good correlation with the outdoor dura*

fcility tests* bix of the costings w«ar$ rated excellent

in behavior, four poor, or*e vary good, &nd on© good. ms almost exactly duplicated the ratings (tables £ end

J for those coatings after three ywnrs of outdoor

exposure m ashesto.v-eaeo&t:. board

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a *3*1 trmmi8M&Gm

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hUmltiom mitULom* Hw r&tos of watorMrs^or fcJN*nsol#ei©fi

oi thowi to-- on wr, t« sboofc r«ty«> r <r- r ; , m . zrma for &%mm mtm p®r 4*y vh£U» wmgUif 33 f**n*

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te-.i fa: ity (*oe ,$.<v, v*>') vw f:w•%•! 1 lowoi tf;

Coating bs. 14 md 3* w*r* t?i* only mmptlWiB to tiii# t*«a4L

3 *J #2 Outdoor % •fttfcorlng.

,fn# dNM&illty of %&# group g}>p«ii«i to fao tii« ;>t&t

of th# throo studied. thii wo* tm «^«tht«r wgpo^up# wsu

esod« on tlndfr felotlE or oa ftl*NtIJ*wi+ Ho mutiny w*«

lover tft«a ‘'goo#*, wftil© rtoot w*r» ratoci either

or ^ffmlUat* in dutrauiuty oftor expawo

a or ttor&o this »upwtor pmtommno* 1 ® duo to too

fnct that IH« asajoyity oi t&o «©?.tter In tni* mpis^

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odorat* of ’watwurpior tr*#f&ile&i«& the t to thttrootovltti* of th« troop*

•^•3 a<w»l«rato(ft foot ior ^mNkMXity

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,JLi eoatli**;# ia tifelft gra^p s&Mr«& story tesaavior

la this list, Ui#rt te«4*ig ae 4ispIi§e*m^Bi or the tsfloofcJs*

uirtaA »or Crippog* or figs# ol %hm vmxlm fra® ro#

t€&t pouvl. lift SS^vior lilies; la# Via* *;'«»« oofttiti • :

•) to v#rti««l sigrlopt# icMte

44ltt#i,©5A« flow, %lppia&* f to34*t#ir4ftgi <ito«

t#3*J n^lXll? - Savior at aa#l)

pt&y thrift or til* ^kmm la toil# 0mm

th1& t#s b Sa1 1 ftfo# wXly * ua* « w».v I ukeuX«J ®# mUrn

.that u * cc^ltlotm of tm%. nr# s#r»r«r ttatu or* erai^rl!/

us«wi in a?frIuaU:.fe Mtufciit*«a* &:sul&te: eo&tl&fft* UulUy*

tfehs tost Is at ft iso^er&fcur# ©1 77*1* 0*0 loeor

toM^watiur* mi u*#& te er£«r tfeot ocraporlJftti eoiaM m

md& with ths Class X {"HMtle* typo) touting:#. dn tm

hml$ of p«rfemeses h#r«* tte# Gtsus* 1 mmrn& m

t-« *&®r« Cuetil# thm the &X»s« I'll ee&tiags #£§ sight )w

sxpseted to MithsiMfd. bstts? tit# stream*# by **&-

pm.$Xmt emfcrsetiass* ^iferfjttoa* «&*« t of the rate»sir&t##

S*l*§

*fm mXnm for wihmMtm, twf#§ fum 1*4 lb*

to 4*f lb. (lo tel# 4) a# to*t#§« It should tee aot«§ l&sfc

tmlf of these s#fttJte§s gave values teeXoe 3*4 lb* tbU

mmpmm oae^thirA im the sigss l ("Mostle* type) esstla*;#* ; -lgo 9 adhesiw v*lu*s Mrer#;.*e§

3*5 Ite* for this slims *.» eesptrei to s %*f lh evogmg* for

cists I* Mere «$ai& the i#mi$ of these lost# jLrsU<mi«*

a superiority of the class 1 costings ever -Jlsss III

eofttirtg® Is a property Is mmlti&M

§3*7 Colaosivsfe### {$«n*H«

Xsasils ter#«Jelot str^sgths C isotlon f*V) wrl#§ fro^ ••• mi&lmrn of 1*1 it to t, of 2-7*4 It ^ita tht

#t 14 if for t&«% grOip. tt% eyorego is ^l^sr tit&a 1 or u.e

Clots I sootiogs* : "o#^vor # it teo tit# for t

two gmipi If the vsHus for lo. 13 » wbloh is s vinyl

rosta w&XBiMi) wore sot consMer#C.
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nr« $*sorlbeg In Motional mxrwm of standards llopart Bo. 1&&3

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mmmimmimmv co*mc tmmmi*

J ’ rr . : , ," >..•

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mm

Coburn

X • . Xht iu&twiala ftiralstood m&&£ this specification

th&XX bt Qj t I ;. ^ application JLu rol^tivoly thick films for &v interior

*r «*t«rter wan* cl stncsgrtb i&sod for storage, ****> m.uOX m &l the folio* lag type* &$ indicated ill b?,*j

torit&tion for bids*, extract e& purchase order*

iyp* .; * Assist or dxying-oiX costing iiitcsCiad for either Interior or anterior

application*

*ypc IX - Miuminous cut-back t/po intended primarily for interior application*

%* au% m'jmmtt*

Xypc X coating material tlrnXX 1m composed of a rcsia or

fryir*g-©il kie, plmmt&i otecrol. amo * u.r>

**&• voX«itilof organic thisne?* to tf&icp, wsJLe, or i$Jtidily

ioilosKistao suostcaee shiOl to used in the formulation, it

be of tho color 9pmi£t*& by too *jbO rtnl

ks suitable ier brush or spray application, at « spreaditi*,

r*te ol 3-4 ^aliens per 100 cguaro feet, to vertleidl sur-

’ ia««* ox weed * *«jmry, 4^t&X, etc*, to give a eQfttiftnroi y eOfeoraftt ooAtlag over the stirf&eo.

«'h^rt & primer is r&v&mm&*4. by the sumufaeturcr* its

use fciifcXl to mandatory*

%'P* n cooti&fcg Jfckll bo composed of 6 rHuiincur b<..* . :;&W£l*X, with added atf&or*! ste&ilsers, thinned to a workable cwtlstMMioo t -iv. & suitable volatile-', otf/y&ic u inr,-. • . jj&cy snc-ll oonfem to the cane %mmm\ rc<vuir*wcfjts as tie

*7 pc X costings thwt there shall to lotion

aa to color*
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f tfX£yAi®v : vi*.. -jmtr* i*. *2
3 . si k u umm2*

fist coat.1%^ tuttarlal anall mmfGm to tha raqulro^ort.s

«Mrt».«?fctQd WXov.

hQtorvoXAt$l*t a by vaAfcfct

*.3kf

£ Op Wwi,Af

- a fcojfr* v&por p*n&o&«411 t/ , pones

vsi.sUv br©iikii.^; $tr«»gikf 10

**4foo$io»f Xo

ibtotirlor at 60*0 (X40* Flagging,

4rlpp»£#t aliotarilbu flow)

M* O^C (11*1; («rftdUtt£

ua-ouga to &at& oii banting rvar

1” aisMyoi} , , i*rl£<JA* £wn*0ility*£ .. ^ fallisr®

. ,«ri&g (*ea«l»r*ttti0 for

*>00 lir&., j.ci~

typ# I fypa ii

Hux* . 1'*.. Max. -ir; — £> 50

55 *5 45 10

1.0 *»<•* 0.2 —

«smw *fe 3

<*»**

a/ —

a/

Mm

10

0***/

V*t •:s®ro Um lA* feag or dispi&eos»nt of gal** stria*. ac&

jbo toUatoriftg of eo&ti&g or Arlppag# fnes* tmt £a»ai . ^xppliaa oaly to aoftt&iift far anterior srgilie&tlaiu

^2ho cooti&g shall ehov no er^cking . *&*titti2g f *lligR.torij...

,

or 1#m of eufesioii#

4. KMOM Of f«SV

4.1 Hao*voXatiXo aattor

*oigfc about 10 |rasa» of th* aat&pla fcsarast 0.01 grinto £ taroo fl&t-bottG&ad oatal dish about > to . oentiaotsi . in a £ master. usst • r*« &l£u *&£ its so- .i^,u ir> -r> ov*r. - •• ‘ •

.not at 105-110*0 ( *>1-230* f) for A hoora or m%$X

hourly vslgiii&ga soov & loss of sgst 8*or# than 0.v4 .*ra»s, u;>ol

and weigh. iM fch# waight of fit# rsai&uo &nd th# weight oi

tife# original sample be&m, are put# tha psrasntago of nopmi&tilo tast ari&l.
'll***4 * ^

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Plate# free 5 to id graa# (weighed to the aiigrist 0*001

tppfcs) ©X the ocfetilig m&tiri&l into § prevlou^l? igr.itec &m

fcared porcelain crucible and Isegfeere-t* at .uot ©Wove * hull.

t&u timt (550-600*0 until &U c&rboisiioioue suater it conor until ©egentiialy constant wsi^ht is? gt'v&iftod*

tool In « d«»loe«ter «ai trftlgh* fro* th« weight ©f tb- = safe an «u-4 the * fight of the tmldue in t&# oruoi&U, ooatpuce

the percentage of ««h#

4.3 water-vapor p#rmofchiXii*

Applp thfc casting at & spreading ret# of 3-4 gallons

pttr 100 square foot to &.t lt£#t two circular it isos- of l/'.r-iiu

esHsto* eeaget of tultfAle dia*tfftar 9 jod coKfomt&g to t\«-

r^air^Mits. of Federal %ecirfcation hl^d»0i&3 f type X*

Cor# ofcoul- axorelnod in implying the m%ti&g ®o t> « essentially uniform filn is ottstsol* *Xl»v the 00 . .toe disc

a

to ooadltlosL in ^ vuXX-Y«niii*ted ro©-4 at fl-£7*C < 70- 0* )

until constant weight is «tt#jbtd* nfetormino *etor-fapor

ability in aoeorde&ee with t&* netted de*crii-«c la

*£«fcteiiY« Method ©a test Tor t

f *t«r»Vepor feme&tlllty of

f*«per* tjpe?feo&r& 9 sad other dhuet &£tori&ls% &£.?*? Pteigratlim pfkh-Mrf* Calculate panBe&feilifcy and eepres* *e pan.'?

(grain® per setter© foot pfcr nont per inch ©* water-vsspor

pre&fttre differential across the specimen).

4*4 fatktlX# inreeking strength

<*fiply tfce (souths at a spread!©* pete of 3-4 gallons

per 100 square riot to the gt»ed «nrf#o« o* ®t i#g»t two

t» 6/ 6-in* shoot® of guaaed dextris • .. 1 ('whit# Dextrin

Paper, SB©* 5fc$-l/fP f Bamtfae tired hp the K«l*urin-Jones

C0Bpsn/t Brookfield, rag*., is rcaaan ended for this ir ^;.o,,J*

Place tie eo&ted i!rs«U la t veil-ventilated rosse at ?l-47w v (70-60* F) *nd idiot to condition until aiu»si«&tl&lig constant

weight is attained*

Cut six atrips, a* tv 6-1©*, from the eOi'-t#d and drlee

afceets &ad so ^k the strip® in water to reaova the ceaUv^s.

Xhlt can be don© fear rllovlng aylsiciect tie© for tho *atc*

to p'Wsotrat# t*ir Wok coating of pspor ;.r*d coft^ tt- isxtri. , wh«r* t;.i# h®& occurred, e&ruuli/ strip the p®p®r fro - costing arc UvorougrJLy rla&o the ire# Xil?~ thus obur-l

f ..» to dr 8*f for tour

hour®.
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vlvrn the tmt strips Cfreo films

)

t with teeir tei^

psfdlei t» the .fir’dttea of pull* in r testing ssActites ©;• .. ln^insti<TO»b*JUsa«« type, i. i&# tensile Iffuatte*

strength &t 73 *-x*r vita tfe« lower Jaw sevte* at & mte ot

Is '% Uu per ssteut*. leeeyd the mil In newwls

rer/aircd 19 rupture %nm sp«*i?eit aisA &V‘«r*£fc- t ?v r-ssults

for tXA .six strips tested.

**•#$ Mheslsgt

Apply the edet&ftg urdLffta&ly et s *^3mmm*4»£ rate of

taJJtons p*r 100 ftqu&re fcst to el*«ji f 9- by X*~ by 0 •004-in.

elarteuft foil lectin* s« uneoeted am. 3 iiie'he# don,.

&m 9$ the *8&m* diem tbm m&%o& sheets m dry in

e ttell-ventllAtsd re©--;; { 70-40* F) until constant weight 1#

otteiaeA. tflth *. theipf teifs or stellar la?i«s«nt 9 carefully

tux through the c&Atlng to the loll# 2tsi* cut is sadt

pardid to the li-in, dteonsion ot the sheet and a distance

of one tech fr«m the line of Junction of the eo$ted ahA tu>-

eesteh foil* fold the foil hash l$QP along this liu# ex cut*

Cesumt e 9- by 11-te# sheet of X^-lt aepheltHMitufoted

felt to tee 5* W ll>te. etRteci section, obtained idaete,

•rite s water soluble j;1uo eentermteg to the require'tats of

NAOrel bi^eeifleetieR €-G-4bi» ( Mt iurtei

this operation* it should be sedtteBCfA on the costeh ioU

so thst the iv-te. iuaA f~te* Ateension* of &he@t esteeJUte).

1© promote b***A f place- a HKlb weight on t?i* sped*** end

Allow to rafcaltt ter V hours,

fteftrr* the trelshfc end cut the ^vmisam into strips 3

Inches vide, mfeteg the. cut* pmdXel to thr p-in* aiaerUo. , i'tev t t* ,;>ln, Apsetee-f i* to to ./« ter A ho r; v * permit find setting of the glue. In this siumer* 6 teat

strips :^fe£iuli.., .'-in, aldw and Ha* long* *ith a costae

uM eeamtod * sejaAteiefe” portion meseurtei £- by f-ln, ted fr«

of felt ted foil fieemirixig f» by 4-in,, r.re obtained

•

... v UabA. carefully strip the tote foil Pros tin.

costltK * distent* of X/4»tn # fxor t/v cut >- r-n» teutly .•' •. * Ceaditten the specters at 73 d£*F for * hours. Test tee

strips «t this t«aper*turo In s oschine of the incltefetionddanee typo with tee leernr Jaw tr^voiter ?>,l & retw of

I,- «1 Inch, »4th the free o»a of the felt /.ripped ir. the

upper Jsw ted the free erst of the foil in the lower jsv oi
'r' fi jftt&S' . i W U 'fii. i .

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tfitiiiu I/- loflfo of Ui® mu of iii® *8$*,4* inti $&Vul&n m

tn& fh* mizinm, j.-uJU <is pamd®} ?mMi af. * i- ®*e& ««.*«*, to *%wlp tho toll tsm tli# i®

i a.® nix. tmd^SH» m ommsiM or® ttVtNFo&odi o&o $&« r#»«!!*-

iokon &* tao «t*ri«&ios; lor th® »as&£L®*

ofe i^u )

HP'PX/ *S*o «t*ftUAg a ^pxmcing m%m ox >*4 *«Xiafc«

per 13© s-vasaaK- root U> * oioaa* jO«*:6 goug* (0*01^3-0* ^

in* tiaick) ototad jHmol* a mmmim* %im lor tfco poadL

1$ ty w**# Clim *to»A p*noX swtot e«f«bi<« or kein*

fcont waUTersil^ tb-rougfe Mi o*e or i&P* osor • V- incii «'*aafe.

%b&HL © £ kroon i:i %m mziiti

g

#K&<uuSi?)g *.Q90&$ -Q*& m^%int m of £ iiieifco# fim t&* t»o ®ntf# of fek# $&&«&«

th* co&w-; pan*i« in ;*ri«Mi&«& pooXUon, in * »^U»

<r**it listed rocsw &c i.\~*T *

( '/0~ .,-y J

4 ) fox '&*© <j©nr* *#4 ;.•**» * maxpmX is ¥tfrtio&iXj for 3 hour# In on $v*;i «t bG^O U4,r *

,-JwE»JU>.e tbo sooting os. fM oat ©X tho soot p*$Xm. for

mg$Uig} fell»wlft$ 9 ftIXpp«-&**$ *%ml arlfpin^* mC

nXXppm* fell *»$ fcy tm 4li4®Ai£ <? of tk# th***d froas tho top of t&* tost pi&sl wifk it*

dlru&eo t,t t&® *t«rfc #1 «&* t#oi*

**•? -Mmnm art)

feii tk® test jfclftOi ism nation 4«6 in ;. u. tC 0*C Qfef > ««4 «llow to r-«mia 1 iiottft kowoiro tao psi ,1

Xros Chs* fc^ik end ihst4 t’-awg-A .t-.n ^re oi i< 0001* & wn^ltym Ziw 'm&& l& m4& 'in

ipproxXmy^lf - Oooond* 11^^ wu; W0«tit i^a-itvae r;t t?>v

jMoii no»t to tho mm&w€l*

sftor kosraliag, th# oootim sknll a#

for arteOkiii## -Ball erscks that Co not oxtonl to th* &.X snmll <Usre^&rd444.

4*3 iwiiginf teretdUltr

-Fpl/ tbo «&&t£»& to on t* by S«iru shoot Of yi^u -r tim.U'ln ptip€T y m CmorUmC in imtion 4,4* dioo tho re tini; to trf i» o vol.l**vor*tll« toe rw at (7^-30^ t) for

00 tvo -o, 4 gnl.vaixi^d vir© ©3

aottOari^-,: 3- by b«*i*u on tho jisrtioXly-*®t coati; g i,r4 • , . 1 ,
14 an&fc&i 'r'M *' '"*% *•

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sXliJit psmm&+ to tho twot* to poosmto »dh**jUisu Alow

to dry two to threo day* m& r&aww tm doxtrln j»&p«r <,&

&®mribmi in , aeiXoi-* 4.4 aM allow *» additional' w«®i* S'*r

I urifiar «j/itt£.

*p*oi»«ui sii4.ll o* i for l>00 Hour* It

*o*4L«rftt«4 wait oooft <!&& exited in l t&zet-l

tspttftflootlon rr«P^l4I&, Koghoft 61^.2 oxcopt t&ot only on*

o»« f ooatffoll/ Xeo&tody ititall fca oihhI. (tot#? ?fe# #il*o

-l^cu-lc S>* vices 3fr. 9 vvi4K;.,0 t 1 11.

1

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Ooetar* | with ooiv art r<*aov«4t is a satisfactory unit tor

thi& ©pcr&tion#) tha syal« ss&aXl sucu that during v c ^0~2'»i£utu pmloC %m ex® mptMM& 40 1? ulmlos

of JU&ht without w&fcex f^v foliofrod ly t iriimto© or lit; -: with water oprap. iuo wator used lor tUu ^rt/ sh^li coot* 1 . uot &*** tfean O.X grain tot/XL solids pm gallon.

At t&o aspiration oi the specif ion period ox oxpoamot ti\* shall bo mov<4 wtho m<oorlm. unit au!

oouofc Wuk of the mabor ©X ©pej4j%3? JLu each mr^m tfeoi

&ro a& Xm^m arUi'^c by iho ii.is

divided of the toi^l auntor ei In the sox .<«* ->1

aui iipXioA oy 100, shall fee likm ss the imottat^gv of brio; -.: failures.

4.$ lner#*«« 4b pmmmm*

fk# BpmlskmM ts?m Ooot tor, 4.X shall im 4xpesu;X .Car

<pOQ pours to aecoloratod we&toering: so described in motion 4 ,t and ant^r-vapor poraoaalllty dwtomincfci : g 4»-

Any % ;„., ever tint of the unweatlioyed wpmXxiim shall It* noted' >ua1

tMe results avoragei. this figure shall 4a tflcaa ** tfca

increase in poramnea iox- tfm &mpXa*
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or co^gyl&t&la ox its coispontnu that c&ria&i m snmrtemf b;,- aedsrats stirring, it t/u,il b# siltme for trash or spvey

nl * spra«&ta& rat© of 3-4 gsllsiis per 100 s< aor

f*et* to v erticil surfaces of wood, ;s**aary 9 ate,, to

give v. sOiitJLraous, adh«*«&t w-.tln*, over %fe* surfsc# c©*Ua.

$bsre & primer is racoss^aded toy toll# mmmtmtmmf its

ass shall t& mandatory*

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to attal on b«adits| evpr j* sttiMl

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fho costing shall show no blistering, erasking, sUigefcorlni

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Figure 3. Class I coatings on cinder block - 2

years outdoor exposure.

NBS

I

Figure 4. Class I coatings on cinder block - 2

years outdoor exposure.

v-K Vs.;,;-

Figure 5. Class I coatings on cinder

years outdoor exposure.

block - NBS

Figure 6. Class I coatings on cinder block - years outdoor exposure.

NBS
4
Figure 7. Class I coal cinder block - years outdoor exposure.

NBS

Figure o. Class I coatings on cinder block - 2

years outdoor exposure.

NBS

Figure 9» Coatings on cinder block - 2

years outdoor exposure.

56 & 59, Class I coatings; b & 5^ Class III coatings.

i

NBS

Figure 10. Glass III coatings

years outdoor

on cinder

exposure.

block -

NBS

Figure 11. Class III coatings on cinder

years outcocr exposure.

block - 2

NBS

figure 12. Aluminum paint (coating no. 23) applied to various base coats^on cinder block - 2 years outdoor

exposure.

<NBS>

ii;

THE NATIONAL BUREAU OF STANDARDS

Functions and Activities

The functions of the National Bureau of Standards are set forth in the Act

of Congress, March 3, 1901, as amended by Congress in Public Law 619, 1950.

These include the development and maintenance of the national standards of

measurement and the provision of means and methods for making measurements

consistent with these standards; the determination of physical constants and

properties of materials; the development of methods and instruments for testing

materials, devices, and structures; advisory services to Government Agencies on

scientific and technical problems; invention and development of devices to serve

special needs of the Government; and the development of standard practices,

codes, and specifications. The work includes basic and applied research, development, engineering, instrumentation, testing, evaluation, calibration services

and various consultation and information services. A major portion of the

Bureau’s work is performed for other Government Agencies, particularly the

Department of Defense and the Atomic Energy Commission. The scope of activities is suggested by the listing of divisions and sections on the inside of the

front cover. Reports and Publications

The results of the Bureau’s work take the form of either actual equipment and

devices or published papers and reports. Reports are issued to the sponsoring

agency of a particular project or program. Published papers appear either in the

Bureau’s own series of publications or in the journals of professional and scientific

societies. The Bureau itself publishes three monthly periodicals, available from

the Government Printing Office: The Journal of Research, which presents complete papers reporting technical investigations; the Technical News Bulletin, which

presents summary and preliminary reports on work in progress; and Basic Radio

Propagation Predictions, which provides data for determining the best frequencies

to use for radio communications throughout the world. There are also five series

of nonperiodical publications: The Applied Mathematics Series, Circulars, Handbooks, Building Materials and Structures Reports, and Miscellaneous Publications.

Information on the Bureau’s publications can be found in NBS Circular 460,

Publications of the National Bureau of Standards ($1.00). Information on cali- bration services and fees can be found in NBS Circular 483, Testing by the National

Bureau of Standards (25 cents). Both are available from the Government Printing Office. Inquiries regarding the Bureau’s reports and publications should be

addressed to the Office of Scientific Publications, National Bureau of Standards,

Washington 25, D. C.
NBS