Vernon County censor. [volume] (Viroqua, Wis.) 1865-1955, 1909-07-07
AID FOR ROCK ROADS
Native LimestoneS to Be Tested
at Kansas University.
BY ENGINEERING DEPARTMENT

Counties and Towns May Have the
Benefit For the Askin9-Materials
and Methods Found That Will Make
Maeadam Last indefinitely.
The engineering department of the
University Of Kansas has decided to
Join the good roads movement From
now on 1t will be equipped to give the
benefit IF IT'S testing laboratories to
the counties aud cities 10 the state Of
Kansas on read materials and meth
ods 4 bulletin will be published soon
hy the department giving the standard
tests on more than 40 samples Of
limestone from the eastern half Of the
state The regents established a test.
Ing station nt Lawrence about a year
age. hltt up to this time there have
been No funds e. publish the results
vt the tests that have been made Tie
tests ia the FIRST bulletin are OF stones
available for macadamizing, Of which
there Is practically an unlimited
amount
In 1905 Professor w C. Hoad. who
has charge .of Che work, had two sen
ior students begin an investigation or
the Fahte Of Kansas ljmeStoucs for road
mokiu@. md they tested acariy a hun
dred samples La the following year
two more students, Edward y Noees
and u. G. McCouauehy. carried on tine
tests Last year more tests were made
from time to time uutil the depart.
/ incut has u good idea Of what line
stones VIII mai e matadam roads.
| There is wo, derfu difference In
them. some hctug practically worth.
| less. while others and they are In The
majority are first class material.
Two tests are applied. one TO deter
mine the toughness ard wearing quail
! ties of the stones and the other 10 de
t"rmine the eemeutns prol critics ~
| the powder that Is made by the road
| roller and the wear OF traffic II salnc-
/ times happens that stone that Is
4 good in one respect is worthless On
account ~ the lack ~ the other tg,.all
I ~ Wearing qualities are determined
! by the standard RATHER" test which
/ vas originated iu France thirty wears
/ ago The samples &c some are broken
into uniform pieces, SO thag Hfty WIN
! weigh Approximately eleven pounds
They are put into a RATHER which
/ consists II an iron cylinder SET nc am
/ angle Of thirty degrees with Che axis
~ rotation In the test LASTING i've
hours, ,Ae cylinder is rotated lU1w.
tunes and the amodut ground e.f the
samples in that tjme by weight d.
I termines the measure of wearing anal
I fly 81 the stoues lp making the &C..
mrut test fhe powder is e. apn gror.
/ the "rataer" and mixed with water
4 II Is allowed O. harden In tylipdri.es
briguettc~ and is tested for It's resist
/ auce under the "trip hammer.
we expect 20 be able 70 make tests
! from now on for amy town or county
that has magadamiting project ur.
der way" said Professor Hoaa. SAND
! / believe ghe work win bee gr.s,
thius Tor tse GueJ r,J8ds movement la
/ the state There ars any amount ~
llmestouv> which ID properly selected
and pui GA he rMdS VIII u,4ke roads
that last MdeHuieiy
There arr Gully six other testing SIN
items ia ;hp United States that e~s
eQurped fav gbe tests uow being MAIDS
at the university The only other eas
west ct Ohio Is at gbe Iowa Axrtpl
tural c0llese. Kansas City star.