Table 8— Compressive strength of Portland cement concrete made in various parts of the Philippine Islands — Continued. 
160 
The Philippine Journal of Science 
1921 
When 
tested. 
1 § IS SSiSSSS SSSSSSSSSS 3 3 
Test specimens pre- 
served in — 
< 
r s s 
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1 
1 
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Nov. 9,1915 
Mnv IK 1915 
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i - 
Dec. 14, 1915 ' 
Dp.r* 24.1915 
ii 
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Jan. 8,1916 
Jan. 12,1916 
i 
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D eft. 15.1910 1 
I 
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July 30,1916 
Aiw. 1.1916 
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Structure in which concrete was used. 
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