583
CEMENT---SET AT DIFFERENT TEMPERATURES,
RESULTS ARRANGED TO SHOW THE STRENGTH OF SPECIMENS AFTER THE LAPSE OF GIVEN INTERVALS OF TIME AT 70° F. IN ADDITION TO DIFFERENT INTERVALS AT 0° F.
Brand.	Interval at 0° F.		Subse- quent inter-	Compres- sive strength per
			70° F.	inch.
	Months.	Days.	Days.	Pounds.
		31	7	2,340
	3	0	7	2,690
		5	7	846
		14	7	1,000
		21		1,010
		31		981
	2	0		981
	3	0	7	1,010
		30	7	1,310
	3	0	7	1,290
A1		30	7	2,440
	3	0	7 |	2,350
		7	7	1,470
		14		1,230 1,240 1,430
		21		
		29		
	3	0	7	1,520
		30	7	448
	3	0	7	340
		32	7	903
	- . 2'? !	0	• ■ ■a	842
	3	0 -	יי • 7' • -	810
		6	7	354
		15	7	460
		20	7	431
		28	7	406
	3	0	7	457
		30	7	659
	3	0	7	558
		32	7	569
	3	0	7	516
	2	0	14	1,250
	3	0	14	1,310
		7	14	1,470
		14	14	1,360 1,490 1,610
		21	14	
		29	14	
	3	0	15	1,730
		30	14	467
	3	0	14	482
		32	14	1,010
	2	0	14	1,050
	3	0	14	1,020
		6	14	540
		15	14	527
		20	14	624
		28	14	561
	3	0	14	579
		32	14	609
	3	0	!4	674