532	CEMENT--SET AT DIFFERENT TEMPERATURES
DETAILS OP COMPRESSION TESTS OF SPECIMENS EXPOSED TO 0° F. TEMPERATURE WHILE SETTING, AND SUBSEQUENTLY AT 70° F.-Continued.
		Composition.			Time of setting in air at temperature		Dimensions.				Ultimate strength.				
Marks.	Brand of				of					Sectional area.					Remarks.
	cement.											Per square inch.			
		Ce- ment.	Sand.	Water.	0° F.	70° F.	Height.	Compressed surface.			Total.		Mean.		
			1	Per cent. 36.1	Days. 21	Days. 7	Inches. 2.06	Inches. 2 00	Inches. 2.14	Sq. inches. 4.28	Pounds. 4,260 4,350	Pounds. 995 1,050	Pounds.		
•fclxl F 15 ....															
							2.08	1.96	2.11	4.14					
							2.00	2.03	2.11	4.28	4,520	1,060			
							2.00	2.03	2.08	4.22	4,270	1,010			
							2.00	2.00	2.10	4.20	3,820	910	1,010		
1&־X1F15 ....				36.1	31	1	2.03	2.06	2.17	4.47	1,920 1,700	430			
												395			
							1.94	2.03	2.12	4.30					
							2.00	2.05	2.19	4.49	1,740	388			
							2.00	2.01	2.06	4.14	1,660	401			
							2.01	2.01	2.18	4.38	1,320	301	383		
		1	1	36.1	31	7	2.01 2.01	1.99 2.06	2.08 2.10	4.14 • 4.33	4,510 4,500	1,090 1,040			
															
							2.02	2.01	2.16	4.34	4,020	926			
							2.01	2.00	2.09	4.18	4,010	959			
							2.00	2.00	2.02	4.04	3,600	891	981		
		1		36.1	31	30		2.15 2.01	2.02 2.08	4.34 4.18	5,700 5,940	1,310 1,420			
							2?02								
							2.00	2.07	1.98	4.10	6,490	1,580			
							1.97	2.10	2.05	4.31	5,780	1,340			
							2.03	2.00	2.01	4.02	5,370	1,340	1,400		
*F8		Star		Neat.		23.4	31	1	2.04 2.01 2.08	2.02 2.02 2.00	2.14 2.11 2.11	4.32 4.26 4.22	6,250 6,620 5,160	1,450 1,550 1,220			
															
							2.04	2.14	1.98	4.24	5,130	1,210			
							2.02	2.02	2.12	4.28	5,700	1,330	1,350		
		Neat.		23.4	31		2.01	2. 00	2.12	4.24	9,820	2,320			
															
							1.99	2. 03	2.09	4.24	10,060	2,370			
							2.00	2.02	2.14	4.32	10,620	2,460			
							2.00	2.07	2.13	4.41	9,680	2,200			
							2.01	2.03	2.15	4.36	10,350	2,370	2,340