479
CEMENT.
SPECIFIC GRAVITY DETERMINATIONS ON REGROUND MATERIAL FROM TENSILE BRIQUETTES, WHICH WERE SET IN AIR.
	Specific gravity.			Loss in weight.		
Brand.	Original condi- tion.	After heating to 110° C.	After heating to redness.	Upon heating to 110° C.	Upon heating to redness, from 110° C.	Remarks.
Alpha 		2.67	2.70	3.11	Per cent. 3.8	Per cent. 6.9	
Atlas		2.66	2.68	3.17	4.4	6.9	
Star		2.61	2.71	3.14	3.8	7.3	
Storm King		2.78	2.87	3.15	2.8	6.5	
Alsen		2.60	2.63	3.10	4.0	7.7	
Dyckerhoff		2.72	2.75	3.13	2.9	6.5	
Steel		2.42	2.51	2.98	2.9	6.7	
Bonneville Improved 		2.60	2.61	3.05	2.6	13.0	
Hoffman		2.75	2.77	3.13	5.8	4.5	
Norton		2.69	2.80	3.11	2.1	9.6	
SPECIFIC GRAVITY DETERMINATIONS ON REGROUND MATERIAL FROM TENSILE BRIQUETTES, WHICH WERE SET IN WATER.
	Specific gravity.			Loss in weight.		
Brand.	Original condi- tion.	After heating to 110° C.	After heating to redness.	Upon heating to 110° C.	Upon heating to redness, from 110° C.	Remarks.
Alpha		2.52	2.72	3.09	Per cent. 5.5	Per cent. 8.2	
Atlas		2.55	2.64	3.06	6.5	5.9	
Star		2.58	2.63	3.09	4.8	8.0	
Storm King		2.69	2.80	3.17	3.1	7.8	
Alsen		2.49	2.54	3.06	4.9	8.9	
Dyckerhoff 		2.68	2.72	3.14	4.0	6.9	
Steel		2.40	2.47	2.94		7.4	
Bonneville Improved 		2.60	2.65	3.00	3.5	12.0	
Hoffman		2.62	2.66	3.10	3.3	11.8	
Norton		2.58	2.73	3.13	3.3	11.8	
COMPARISON OF SPECIFIC GRAVITY DETERMINATIONS ON REGROUND MATERIAL FROM TENSILE BRIQUETTES, SET IN AIR AND SET IN WATER.
Brand.	Specific gravity.		Excess of specimen set in air.	Specific gravity, original material from barrel.
	Set in air.	Set in water.		
Alpha		2.67	2.52	0.15	3.11
Atlas		2.66	2.55	.11	3.09
Star		2.61	2.58	.03	3.10
Storm King		2.78	2.69	.09	3.07
Alsen		2.60	2.49	.11	3.08
Dyckerhoff		2.72	2.68	.04	3.11
Steel 		2.42	2.40	.02	2.74
Bonneville Improved		2.60	2.60	0.	2.85
Hoffman		2.75	2.62	.13	3.06
Norton		2.69	2.58	.09	3.03
Obelisk		2.75	2.76	-.01	3.12
Means of determinations		2.66	2.59	.07	3.03