Table 8 —Compressive strength of Portland cement concrete made in various parts of the Philippine Islands — Continued. 
154 
The Philippine Journal of Science 
192! 
When 
tested. 
i 
Days. 
28 
31 
33 
29 
30 
30 
30 
34 
28 
23 
28 
28 
30 
30 
28 
28 
48 
Test specimens pre- 
served in — 
1 
I 
5 3 3 
; 
i 3 53 S3 S3 
1 ■ ■■ 
i 
£ 
1 
sss 
1 
\ inns 
\.mm 
h 
i 
i 
! ! ! 
i 05 3 3 
ini' ■■ii 
Source of aggregate. 
Gravel. 
j 
1 
1 
III 
■§ .i ■ 
! I ! j 
i ! ! 
1 n 
! i h 
; ! Ii 
i!i : 
III. 
oea, gravel wasnea witn 
fresh water. 
do ----- 
Crushed Sisiman andesite 
do 
Crushed rock from ledge 
adjoining U. S. Engi- 
neer’s Quarries on 
mainland opposite 
Carabao Island, k 
i 
! ! 
; 11 
IN 
JIT 
i 
-j ■ ■ 
Njii: j 
IT III; ■ 
1 ii 
1! 
jl 1 
III 
Cagayan River 
Pasig River 
i m 
l if'T-l 
1 ' Hi 
« 
I s 
Aug. 9, 1915 
Sept. 26, 1915 
Dec. 10, 1915 
uec. 17, iyi5 
Dec. 8, 1910 
Jan. 26, 1911 
June 9, 1914 
I j 
i i 
^ 1 
J 1 
| 1 
! 
Aug. 27, 1910 
do 
Oct. 29, 1910 
1 
1 
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t 
i 
i 
l 
j 
j 
• 
MARINDUQUE. 
Tiguion Bridge 16.1, Gasan 
1 
IKfl 
1 
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if 
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MIS AMIS. 
Gusa Central School, footings 
Gusa Central School, walls 
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III 
jl 
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