Table III .—Comparison of penetration tests for short periods of air cooling and immersion in 2$° C. bath t loo gm., 5 seconds 
jan. 24,1916 Effect of Variables on Asphalt Penetration Test 
I 
00 
& 
00 00 10 
to fO to 
H H H 
'froO t" 
to to 
M M M 
W N 
to to 
M H M 
to 
£ 
a Oi Si 
sp « « 
a ov 0 
f* fO w 
Os Oh Oh 
vO 
?$? 
55? 
Blended. 
Q O r» 
v© to «0 
M H H 
W O *■» 
vO 10 to 
H H H 
W 00 'O 
tO 10 >0 
H H M 
to 
1 
>0 to H 
Ot Ov Ov 
%o to « 
» Ov Ov 
w 
Ov Oh OS 
i 
Cl M 
VO 'O'O 
■4 « W 
VO VO <C 
iti *0 
SO sO MD 
Mexican. 
a 
00 0 0 
■O’ O’ to 
H H H 
« O H 
to to VO 
H H H 
H O 0 
ir» \n to 
H H M 
1 
a 8v 8v 
S & & 
sss 
1 
H OV H 
to O- to 
H O O 
to to to 
WHO 
to to to 
i 
i 
tO 
» 
w 0 CO 
fo « ro 
H H W 
vt O O 
to to to 
H H H 
00 H to 
to to to 
H H H 
N 
I 
H to ro 
OOiOi 
JS J5 
Os Os Os 
0 
to Tf to 
Ov Ov Ov 
H 
SO 
$ 
t>vO t'' 
* 'tf ^ 
t'' 
* -e 
Ov t" f- 
^ " 4 - ^ 
Conditions before test. 
1 
& 
u 
0 
to 
w 
tf 
i hour. 
1 hour. 
iM hours. 
! 
In air. 
30 minutes 
1 hour. 
30 minutes.... 
Method 
6 
£ 
« >o to 1 
811 
