552	CEMENT---SET AT DIFFERENT TEMPERATURES.
DETAILS OF COMPRESSION TESTS OF SPECIMENS EXPOSED TO 39° F. TEMPERATURE WHILE SETTING, AND SUBSEQUENTLY AT 70° F.—Continued.
s.		Composition.			Time of setting in air at temperature «of—		Dimensions.			Sectional area.	Ultimate strength.		
		Ce- ment.	Sand.	Water.	39° F.	70° F.	Height.	Compressed surface.			Total.	Per square inch.	Mean.
				Per cent.	Days.	Days.	Inches.	Inches.	Inches.	Sq. inches.	Pounds.	Pounds.	Pounds.
				87.1	30	7	2.01	2.00	2.08	4.16	3,900	938	
							2.00	1.99	2.15	4.28	4,820	1,130	
							1.99	2.00	2.11	4.22	4,600	1,090	
							1.97	2.05	2.05	4.20	3,550	845	
							1.97	2.00	2.12	4.24	4,720	1,110	1,020
				37.1	30	14	2.00	2.00	?׳2.0	4.14	5,610	1,360	
							2.00	2.00	2.12	4.24	5,770	1,360	
							2.00	2.03	2.10	4.26	5,130	1,200	
							2.00	2.00	2.10	4.20	5,960	1,420	
							2.02	2.00	2.09	4.18	5,880	1,410	1,350
		Neat.		37.1	91	0	2.00	2.02	2.08	4.20	4,390	1,050	
							2.04	2.04	2.10	4.28	4,210	984	
							2.02	2.02	2.12	4.28	3,800	888	
							2.01	2.02	2.08	4.20	5,200	1,240	
							2.00	2.01	2.12	4.26	4,310	1,010	1,030
		Neat.		37.1	91	7	2.02	2.01	2.10	4.22	6,640	1,570	
							1.98	2.00	2.10	4.20	5; 800	1,380	
							2.04	1.94	2. 08	4.04	5,400	1,340	
							1.98	2.03	2.10	4.26	5,120	1,200	
							1.96	2.03	2.08	4.22	5,470	1,300	1,360
		Neat.		37.1	91	15		2.12	1.98	4.20	6,000	1,430	
							2.02	2.10	1.99	4.18	6; 150	1,470	
							1.99	2.12	2.00	4.24	6,120	1,440	
							1.97	2.14	2.00	4.28	6,540	1,530	
							2.01	2.08	2.00	4.16	6,360	1,530	1,480
		Neat.		35.9	30	0	2.00	2.01	2.15	4.32	5,100	1,180	
	proved.						1.94	2.03	2.09	4.24	4,510	1,060	
							2.00	1.99	2.12	4.22	5,400	1,280	
							1®99	2.00	2.09	4.18	5,250	1,250	
							2.00	1.99	2.15	4.28	5,240	1,220	Ü200
Remarks.
B. I. F. 18 .