571
CEMENT--SET AT DIFFERENT TEMPERATURES.
MEAN RESULTS WITH 2-INCH CUBES—Continued.
Compres-
sive
strength
Time of setting in air at temperature of—
Composition.
Class.	Ce- ment.	Sand.	»Vater.	0° F.		39° F.		70° F.		per square inch.
			Per ct.	Mos.	Jays.	Mos.	Jays.	1 Vos. i	Jays.	Pounds.
Portland .					30 .				1	
			24.4		30 .				7	1,310
			24.4		30				31	1,680
			24.4	3 .					1	703 |
			24.4	3					7	1,290
			24.4	3					14	1,530
Portland .							32			1,600 ;
			25.0				32		7	1,800
			25.0				32		30	2,590
			25.0			3				2,300
			25.0			3			7	2,530
			25.0			3			30	2,700
Portland .	Neat.								32	2,520
			25.0						39	2,560
			25.0					2		2,510
			25.0					3		2,430
			25.0					3	7	2,470
			25.0					4		2,380
Portland .	Neat.				30				1	986
			28.2		30				7	2,440
			28.2		30				14	2,590
			28.2	3					1	1,210
			28.2	3					7	2,350
			28.2	3					29	2,520
Portland .	Neat.						21			4,910
			28.2				31			5,250
			28.2				31		7	5,970
			28.2				31		31	6,430
			28.2			3				5,870
			28.2			3			8	6,670
			28.2			3			30	6,400
Portland .	Neat.								14	3,780
			28.2						21	3,930
			28.2						31	3,900
			28.2						38	3,450
			28.2					2		3,430
			28.2					3		4,040
			28.2					3	9	3,160
			28.2					4		3,510
Portland	Neat.				7				1	315
			27.3		7				7	1,470
			27.3		7				14	1,470
			27.3		14				1	231
			27.3		14				7	1,230
			27.3		14				14	1,360
			27.3		21				1	185
			27.3		21				7	1,240
			27.3		21				14	1,490
			27.3		29				1	347
			27.3		29				7	1,430
			27.3		29				14	1,610
			27.3	3				I		1	624
			27.3	3					7	1,520
			27.3	3					15	1,730
Portland	Neat.						28			4,000
			26.0			1				4,010
			26.0			1			7	5,000
			26.0			1			13	5,460
			26.0			1	13			4,380
			26.0			3				4,980
			. 26.0			3			8	4,970
			. 26.0			. 3			14	5,420
Portland	. Neat.								14	3,330
			26.0						. 21	3,610
			. 26.0						. 28	3,970
			26.0					. 1		3,730
			. 26.0						5	3,240
								1		1
Brand.
Storm King
Alsen.