554	CEMENT—SET AT DIFFERENT TEMPERATURES
DETAILS OF COMPRESSION TESTS OF SPECIMENS EXPOSED TO 39° F. TEMPERATURE WHILE SETTING, AND SUBSEQUENTLY AT 70° F.—Continued.
Remarks.
Ultimate strength.		
	Per	
Total.	square inch.	Mean.
Pounds.	Pounds.	Pounds.
3,520	893	
3,580	833	
3,470	830	
3,290	772	
3,620	883	842
4,820	1,170	
4,510	1,090	
4,290	1,040	
5,040	1,220	1,130
2,580	626	
2,540	617	
2,820	684	
2,710	667	
2,700	649	649
4,320	1,040	
3,520	850	
3,480	821	
4,010	946	
3,770	885	
3,750	893	
3,630	873	901
3,240	760	
2,800	667	
3,020	712	
3,410	828	
3,230	776	549
4,610	1,130	
4,690	1,130	
4,850	1,160	
4,340	1,040	
4,630	1,110	1,110
Sectional
area.
Sq. inches. 3.94 4.30
4.18
4.26 4.10
4.12
4.12
4.12
4.14
4.12
4.12
4.12
4.06
4.16
4.16
4.14
4.24
4.24
4.26
4.20
4.16
4.26
4.20
4.24
4.12
4.16
4.07
4.16
4.18
4.16
4.18
Composition.			Time of setting in air at temperature of—		Dimensions.		
Ce- ment.	Sand.	Water.	39° F.	70° F.	Height.	Compressed surface.	
Neat.		Per cent. 35.5	Days. 8	Days.	Inches. 2.04	Inches. 1.92	Inches. 2.05 2.15
					2.00	2.00	
					2.00	2.00	2.09
					2.00	2.00	2.13 2.05
					2.02	2.00	
Neat.		35.5	8	14	1.98	2.00	2.06
					2.00	2.00	2.06
.					2.01	2.00	2.06
					2.00	2.00	2.07
Neat.		35.5	14	0	2.00	2.00	2.06
					2.00	2.01	2.05
					2.01	2.01	2.05
					2.04	1.98	2.05
					2.00	2.01	2.07
Neat.		35.5	14	7	1.99	2.00	2.08
					2.00	1.99	2.08
					2.00	2.01	2.11
					2.02	2.00	2.12
					1.98	2.00	2.13
					2.00	2.02	2.08
					2.00	2.02	2.06
Neat.		35.5	23	0	2.00	2.00	2.13
					2.00	2.01	2.09
					1.94	2.05	2.07
					2.00	2.00	2.06
						1.98	2.00	2.08
Neat.		35.5	23	7	2.03	1.94	2.10
					2.00	2.00	2.08
					1.99	2.00	2.09
						1.99	2.02	2.06
						2.01	2.00	2.09
Brand of cement.
Hoffman......
Hoffman ..
Marks.
H. F. 11.
H. F.ll.......