232 The Philippine Journal of Science 
Table V. — Effect of hydrated lime, in presence of various amounts of 
gypsum. 
Sam- 
ple 
No. 
Gypsum 
added 
(grams 
per 
kilo). 
Calculat- 
Normal 
consist- 
ency. 
Initial set in minutes. 
ed per 
cent 
S03. 
With no 
addition 
of lime. 
With 0. 5 
per cent 
lime. 
With 1 
per cent 
lime. 
With 2 
per cent 
lime. 
1 
0 
1.60 
Per cent. 
25 
0 
10 
5 
45 
2 
4.2 
1.65 
26 
6 
65 
40 
80 
3 
7.0 
1.76 
27 
20 
60 
65 
110 
4 
14.0 
2.00 
28 
105 
125 
145 
160 
