Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1914-05-30
]. A. GILMAN, IN TALK IOADCLuB,
TAVORS THE Use OF BlTuLITHlC
Sets Forth Virtues of Paving
Material He Represents
Emphasis on Durability

fA0dress delivered BY ,. a Giifisn OF
April n 20 the members of the Ho
noiulu Ad Club.
Gentlemen II Is Ifuf necessary e
take time relating experiences O
cities IN trying TO secure roads that
will stand the new and extremely
wearing traffic which automobiles and
power driven trucks are subjectins
The roads.
Suffice II 10 say that road building
Is attracting the attention Of net onlS
road builders and engineers, but
property owners as well.
The new methods OF transportation
have come to stay, consequently II il
quite necessary and important thai
roads be constructed so as TO With
stand for AT least z reasonable time
the wear and tear for which the pow
er-drfpen vehicles are responsible
The old methods OF building roads
are wholly Inadequate for present use
and an entirely new and scientific con
sfrucfion must be used
Just as much care and thought
should be given road construction AZ
business men give to private enter.
prises where an eaynest endeavoF Il
being made to attain economic re
suits.
win explain to you what bitulithis
pavement Is, how It is constructed
and why It has secured recognition
as the leading bituminous road sur
face
a Patented Pavement.
Blfnlithic pavement IL patented
pavement. the patents being held b.
Messrs. Warren brothers Of Boston
For 20 years the Warren brothers
had been engaged IA the paving bust
ness and were constantly studying and
experimenting on road construction
trying to improve the wearing quail
ify Of road surface.
Mr.. Fred J. Warren believing thai
there was great opportunity for i'm
propement, commenced to expefimen
along lines Of his own. with the puI
pose or producing pavement thai
would give greater durability than as
Dhalf with which they had been ia
lnilIar FOR years.
Mr.. Warren believed that minera
aggregate should have a stability o.
iie own. regardless Of the bitumfnous
cement used. and that the only func
ton Of the bitfminous cement should
be the filline Of voids in order TO ex
clnfe moisture and to cement the par
ticlee Of the aggregate
After months Of laboratory work ht
introduced to the world an entirely
new form Of pavement construction.
The new pavement was patented
and given the name Of bitulithic, coin
Sd fnDm the word bitumen and from
the Latin elitthos.s stone. the pave
n3enf hoiha made az q combination 81
bihdnen and stone.
Bitnlithic pavement IS formed By
mixing different sizes Of stone FOL
use IN the wearing surface IN sucI
pronoffions that the spaces betweeE
the largest size OF stone used would
Be filled by the stone Of the next larg
est sire that would fit In the voids
and SO on down to impalpable pow
der, thereby giving to the stone az
rfeeaf1 an inherent stability to with
stand traffic independent Of the &c
,Se1ffnr material used to coat tho
,I4rftcles 81 stone and 10 I'm the re
,,,sirine voi3e 81, the mixture.
Eourdsflon a Important.
n the construction az bitulifhic. Of
n fact any pavement. the foundation
ls the first thing to be considered i
the natural soil can be rolled firm
with heavy road roller q stone foun
dafIon NAV be used and Is preferable
for reasons to be mentioned later.
This broken stone layer. say four OF
six inches thick. Is thoroughly rolIet
and is spread with thin coating d
bItumfnous cement which fills ant
minds the foundation besides makint
the mass waterproof.
After the foundation has baen pre-
nared II is covered BY the wearinl
snfface which consists OF q two-incl
ltver Of bitulfthic mixture.
This contains the best stone tina
can be obtained. properly graded II
sizes from that passing an inch ant
8 quarter screen down to ifnpalpabll
DoWder.
This grading Is scientifically de
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