CEMENT--SET AT OBDINABY TEMPEBATUBES.
Compression Tests of Cements.
Specimens set in air at ordinary temperatures. Amount of water used in mixing stated in per cent of the amount of cement by weight.
Dimensions.			Sec- tional area.	Ultimate strength.			Remarks.
Height.	Compressed surface.			Total.	Per square inch.	Mean.	
Inches.	Inches.	Inches.	Sq. inches.	Pounds.	Pounds.		
2.03	2.00	2.08	4.16	13,500	3,250		
2.00	2.02	2.09	4.22	13,090	3,100		
2.04	2.10	2.00	4.20	11,400	2,710		
1.99	2.00	2.04	4.08	9,700	2,380		
2.05	2.06	2.00	4.12	10,900	2,650		
2.00	2.08	2.06	4.28	12,400	2,900		Sifted material. Grains finer
2.00	2.08	2.00	4.16	11,900	2,860		
2.02	2.00	2.14	4.28	11,280	2,640		
2.01	2.06	2.01	4.14	12,900	3,120		
2. 02	2.08	2.00	4.16	11,310	2,720		
2.00	2.10	2.00	4.20	8,600	2,050		
2.02	2.10	2.01	4.22	11,980	2,840	2,770	
2.04	2.02	2.07	4.18	9,800	2,340		
2.00	2.02	2.04	4.12	9,550	2,320		
1.99	2.07	2.04	4.22	14, .600	3,460		
2.02	2.10	2.00	4.20	15,500	3,690		
2.01	2.09	2.01	4.20	12,810	3; 050		
2.01	2.00	2.07	4.14	13,850	3,350		
2.00	1.98	2.10	4.16	11,150	2,680		
1.98	2.10	2.00	4.20	12,800	3,050		
2.00	2.01	2.10	4.22	9,70C	2,300		Sifted material. Grains of ce-
2.00	2.04	2.03	4.14	13;050	3,150		ment finer than ".0027 diam-
1.98	2.04	2.06	4.20	12,800	3’050		eter.
2.00	2.00	2.06	4.12	11,020	2,670		
2.05	2.00	2.08	4.16	8,980	2,160		
2.00	2.10	2. 04	4.28	11,010	2,570		
2.02	2.00	2.09	4.18	9,300	2,220		
1.99	2. 02	2.01	4.06	12,800	3,150		
2.00	2.04	2.07	4.22	14,600	3,460		
2.00	2.12	2.01	4.26	10,600	2,490	2,390	
Composition.			Time of setting in—	
Ce- ment.	Sand.	Water.	Air.	|water.
Neat.		Per cent. 35.4	Days. 30	Days. 0
				
				
				
				
				
				
				
				
				
				
				
1	1	39.7	31	0
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
	:::				
Brand of cement.
Atlas......
Marks.
Atl. F. 27......
Atl. 1 X 1 F. 27.