590	CEMENT----SET AT ORDINARY TEMPERATURES
Compression tests of cements—Continued.
Dimensions.			Sec- tional area.	Ultimate strength.		
Height.	Compressed surface.			Total.	Per square inch.	Mean.
Inches.	Inches.	Inches.	Sq. inches.	Pounds.	Pounds.	Pounds.
1.95	2.01	1.98	3.98	810	204	
2.00	2.01	1.96	3.94	720	183	
1.97	2.00	1.99	3.98	690	173	
2.00	2.02	1.97	3.98	610	153	
1.96	2.04	1.97	4.02	680	169	
1.96	2.02	1.96	3.96	620	157	
1.99	1.96	2.00	3.92	1,200	306	
1.96	1.97	2.03	4.00	1,050	263	
1.94	2.03	2.02	4.10	1,100	268	
1.96	1.93	2.03	3.92	1,010	258	
1.94	2.02	1.98	4.00	1,100	275	
1.94	2.02	* 1.98	4.00	810	203	2!L8
2.03	2.08	2.00	4.20	200	48		i
2.01	2.05	2.06	4.22	210	50		
2.00	2.05	2.03	4.16	370	89	62
1.99	2.03	2.00	4.06	820	202	
2.02	2.03	1.98	4.02	990	246	
1.99	2.02	2.02	4.08	890	218	
1.98	2.01	2.03	4.08	900	221	
1.98	2.01	2.02	4.06	810	200	217 J
1.99	2.03	1.97	4.00	590	143	
2.00	2.01	2.04	4.10	480	117	
2.00	2.02	2.00	4.04	580	144	
1.98	2.02	1.99	4.02	470	117	
2.00	2.02	1.96	3.96	480	121	
2.00	1.98	2.00	3.96	500	126	
2.02	2.05	2.00	4.10	520	127	
2.01	1.98	2.04	4.04	710	176	
1.97	2.03	1.97	4.00	450	113	
2.00	2.03	1.98	4.02	460	114	
2.00	2.03	2.02	4.10	640	156	
1.98	2.03	2.01	4.08	470	115	131
2.02	2.00	2.05	4.10	950	232	
2.00	2.04	2.00	4.08	900	221	
2.00	2.02	2.04	4.12	890	216	
2.01	2.03	2.06	4.18	920	220	
2.04	2.00	2.07	4.14	910	220	222
Time of setting in-
Composition.
Ce-
ment.
Brand of cement.
Marks.
Sifted material. Grains finer than ".0027 diameter.
LSif ted material. Grains coarser than ".0058 diameter.
Sifted material. Grains of cement finer than ".0027 diameter. Corners gone in this group of specimens.
Sifted material. Grains of ce-' • ment finer than ".0027 diameter.
Days.
0
Days.
31
Per cent. 45.0
Neat.
31
Neat.
Hoffman.
31
Hoffman.
H.lxl Mar. 5..
H. lxl Mar. 1.:
M., Apr. 2.