546	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.
7,680	1,840	
6,610	1,600	
6,020	1,450	
7,750	1,880	
7,180	1,790	1,710
10,400	2,550	
9,300	2,290	
11,550	2,830	
12,120	2,930	
11,980	2,950	2,710
12,600	3,030	
13,950	3,580	
12,450	3,020	
11,060	2,750	
10,500	2,520	2,980
17,600	4,330	
13,400	3,320	
13,300	3,390	
13,400	3,210	
12,280	3,020	3,550
16,350	4,070	
16,020	3,970	
17,000	4,090	
16,500	4,170	
19,050	4,720	4,200
9,250	2,260	
8,100	1,980	
7,420	1,790	
6,300	1,940	
7,600	1,830	1,960
Dimensions.
Sectional
area.
Compressed
surface.
Height.
Sq. inches. 4.18
4.14
4.14 4.12 4.02
Inches. 2.06 2.06 2.07 2.05 2.03
Inches.
Inches.
2.03
2.01
2.00
2.01
1.98
1.99
1.99 2.01
1.99 2.00
4.08
4.06
4.08 4.14
4.06
2.06
2.05
2.05 2.08 2.04
1.98
1.98
1.99
1.99
1.99
2.02
1.99
2.00
1.98
1.99
4.16 3.90 4.12
4.02
4.16
4.06
4.04 3.92 4.18
4.06
4.02
4.04
4.16 3.96
4.04
2.02
1.96
1.98
1.98
2.03
2.01
2.00■
1.98
2.04
2.01
2.00
2.00
2.03
1.97
1.99
2.06
1.99
2.08
2.03
2.05
2.02 2.02 1.98
2.05
2.02
2.01
2.02
2.05
2.01
2.03
2.02
2.05 2.-03 2.00 2.01
2.06 2.08
2.05 2.01 2.02
2.06 2.01 2.01 2.03 1.93
4.10
4.10 4.14 3.25 4.16
2.06 2.06 2.07 1.60 2.09
1.99
1.99 2.00 2.03
1.99
1.98 2.04 2.00
1.99 2.00
Composition.			Time of setting in air at temperature of—	
Ce- ment.	Sand.	Water.	39° F.	70° F.
1	1	Per cent. 32.0	Pays. 15	Pays. 0
				
				
				
1	1	32.0	15	7
				
				
				
Neat.		25.7	29	0
				
				
				
				
Neat.		25.7	29	7
				
				
				
				
Neat.		25.7	29	30
				
				
				
				
1	1	32.0	31	0
				
				
				
Brand of cement.
Marks.
Star
^lxlF. 25...
Star
☆ J. 22.
Star
☆ 1X1 F. 25....