CEMENT----GBOUTS.
528
Star Portland Cement, without Plaster.
GROUTS MIXED WITH HOT OR COLD WATER.
Age when tested, 32 days.
140־ per cent ice water. Acquired a granular mealy state when mixed, immediately tamped into
molds.]
Dimensions.			Sectional area.	First crack.	Ultimate strength.		Remarks.
Height.	Compressed surface.				Total.	Per square inch.	
Inches.	Inches.	Inches.	Sq. inches.	Pounds.	Pounds.	Pounds.	
3.97	4.04	4.07	16.44		46,500	2,828	
3.96	4.07	4.03	16.40		44,600	2,720	
3.97	4.00	4.04	16.16		41,100	2,543	
3.96	4.03	4.09	16.48		41,300	2,506	
3.96	4.05	4.04	16.36		40,500	2,476	
[50 per cent ice water. Acquired a granular mealy state when mixed, immediately tamped into
molds.]
3.98	3.97	4.04	16. 04		32,800	2,045	
3.97	4.00	4.05	16. 20		33,400	2,062	
3.96	4. 00	4.14	16.56		34,400	2,077	
3.96	4.00	4.13	16.52		34,100	2,064	
3.94	4.00	4.05	16.36		30,300	1,852	
[50 per cent hot water, 82° C. Remained a thin mortar 2£ hours and was then put into molds.]
4.05	4.04	4.00	16.16 		28,300	1,751	
4.10	4.07	4.00	16.28 !		30,100	1,849	
4.03	4.06	4.00	16.24 i		32,400	1,995	
4.01	4.05	4.05	16.40 !		31,000	1,890	
4.08	3.97	4.11	16.32 !		30,900	1,893	
[60 per cent ice water. Mixture thickened and was immediately put into molds.]
4.03	3.95	4.03	15.92		 21,600	1,357	
4.05	3.96	4.06	16.08		 24,800	1,542	
4.02	3.95	4.10	16.20		 23,200	1,432	
4.03	3.94	4.05	15.96		 23,600	1,478	
4.06	3.95	4.07	16.08		 22,700	1,412	
[64.7 per cent ice water. Originally mixed with 70 per cent water; excess water removed and put into molds 3 hours later.]
3.95	4.04	4.09	16.52	26,900	33,500	2,028	
3.94	4.00	4.12	16.48	32,300	35,400	2,148	
3.96	3.98	4.11	16.36	28,000	29,400	1,797	
3.94	4.03	4.18	16.85	35,900	35,900	2,131	
4.00	3.96	4.06	16.08	31,100	31,100	1,934	
[71.1 per cent ice water. Originally mixed with 100 per cent water; excess water removed and put into molds 4 hours later.]
3.95	4.03	4.07	16.40	18,500	18,500	1,128	
3.96	4.02	4.15	16.68	16,200	16,200	971	
3.95	3.95	4.14	16.35	14,000	15,100	924	
3.94	4.00	4.13	16.52	13,300	13,300	805	
3.94	4.00	4.13	16.52	14,400	14,900	902