538	CEMENT--SET AT DIFFERENT TEMPERATURES,
DETAILS OF COMPRESSION TESTS OF SPECIMENS EXPOSED TO 0° F. TEMPERATURE WHILE SETTING, AND SUBSEQUENTLY AT 70° F.—Continued.
Remarks.
thawing. Material had not set much when thawed.
Cubes of this age all were more or less checked, which occurred during thawing.
׳Cracked while thawing out.
Not set much when thawed out.
Marks.	Brand of cement.	Composition.			Time of setting in air at temperature of—		Dimensions.			Sectional area.	Ultimate strength.		
		Ce- ment.	Sand.	Water.	0° F.	70° F.	Height.	Compressed surface.			Total.	Per square inch.	Mean.
				Per cent.	Days.	Days.	Inches.	Inches.	Inches.	Sq. inches,	Pounds.	Pounds.	Pounds.
		Neat.		27.3	90	15	1.99	2. 02	2.05	4.14	5,270	1,270	
							2.02	2.13	2.03	4.32	8,820	2,040	
							2.02	2.05	2.02	4.14	8,340	2,010	
							2.04	2.02	2.10	4.24	6,600	1,560	
							2.03	2.10	2.00	4.20	7,520	1,790	1,730
		Neat.		36.2		1	1.99	2.03	2.10	4.26	380	89	
							2.06	2.07	2.05	4.24	320	75	
							2.01	2.02	2.10	4.24	410	97	
							2.00	2.05	2.13	4.37	420	96	
							1.98	2.03	2.12	4.30	380	88	89
		Neat.		36.2			2. 00	2.08	2.10	4.37	1,740	398	
							2.00	2.05	2.05	4.20	1,530	364	
							2.00	2.00	2.11	4.22	1,670	396	
							2.01	2.01	2.07	4.16	1,380	332	
							2.01	2.01	2.11	4.24	1,510	356	369
		Neat.		36.2		14		2.08	2.10	4.37	2,400	549	,
							2.07	2.02	2.12	4.28	2; 360	551	
							2.01	1.98	2.11	4.18	2,250	538	
							2.04	2.03	2.12	4.30	2,170	505	
							2.02	2.05	2.10	4.30	2,370	551	539 ]
Stl. F. 13			Neat.		36.2	14	1	2.01	2.02	2.07	4.18	300	72	
							2.03	1.98	2.07	4.10	260	63	
							2.02	2.05	2.13	4,37	258	59	
							2.04	2.01	2.16	4.34	310	72	
							2.02	2.07	2.08	4.30	316	74	68