CEMENT—RETARDED SETS.
514
Remarks.
CEMENT, WITHOUT PLASTER—Continued.
Marks.		Time of setting in air at temperatures of—				Dimensions.			Sec-	Compressive strength.	
	re- tarded.	0° F.		70° F.		Height.	Compressed surface.		tional area.	Total.	Per square inch.
				Mos.	Days.	Ins.	Ins.	Ins.	Sq. in.	PoundsJ	Pounds
J 22	72			2		1.99	2.02	2.06	4.16	3,800	914
						2.01	2.00	2.02	4.04	3,870	958
						2.03	2.01	2.02	4.06	4,500	1,110
J 22	72			6		2.03	2.01	1.99	4.00	2,250	563
						1.98	2.01	2.01	4.04	1,920	475
						1.99	1.99	2.00	3.98	2,000	502
						1.99	1.99	2.01	4.00	2,300	575
						1.99	2.03	2.00	4.06	2,010	495
J 22	72			6		2.06	1.99	2.04	4.06	1,980	488
						2.00	2.02	2.02	4.08	2,400	588
J 22	96	4			4	1.99	2.00	2.01	4.02	4,390	1,090
						1.98	1.99	2.03	4.04	3,900	965
						1.99	2.03	2.00	4.06	2,480	611
						1.96	1.99	2.01	4.00	2,890	723
						2.00	2.00	2.01	4.02	2,660	662
J 22	96			4		2.00	1.98	2.01	3.98	1,680	422
						2.02	1.99	2.02	4.02	1,390	346
						1.99	1.99	2.01	4.00	1,600	400
						1.99	2.00	2.03	4.06	1,720	424
						1.99	1.99	2.04	4.06	1,410	347
J 22	96	4		1		1.98	2.00	1.98	3.96	2,000	505
						1.96	2.00	2.02	4.04	2,730	676
						1.99	2.01	1.99	4.00	2,700	675
						1.98	1.98	1.98	3.92	2,850	727
						1.98	2.00	1.98	3.96	3,100	783
J 22		5			i	1.98	2.00	2.01	4.02	2,250	560
						1.99	2.01	2.00	4.02	2,440	607
						1.99	2.01	1.99	4.00	2,400	600
						1.97	2.00	2.00	4.00	2,700	675
						1.96	2.02	2.00	4.04	2,730	676
J 22	96			5		1.97	2.00	1.96	3.92	2,310	589
						1.94	2.03	1.96	3.98	1,900	477
						1.98	2.00	2.04	4.08	2 130	522
						2.05	1.98	1.98	3.92	2/200	561
						1.98	2.03	1.97	4.00	2,000	500
J 22	96			2		1.96	2.01	1.97	3.96	1,600	404
						1.98	2.00	1.98	3.96	1,500	379
						1.94	1.98	1.98	3.92	2,200	561
						I 1.98	1.98	1.98	3.92	1,600	408
					! 1.96		1.98	1.99	3.94	2,400	609
J 22				6		! 2.00		2.00	1.96	3.92	2,700	689 .
						1.96	2.00	2.03	4.06	2,280	562
						1.97	2.01	1.98	3.98	2,900	729
						1.99	2.04	1.96	4.00	2,250	563
						1.96	2.00	1.96	3.92	2,600	663
J 22	96			6		1.98	1.99	2.04	4.06	2,900	714
						2.05	1.98	2.01	3.98	2,920	734
J 22	102			6		3.94	4.02	3.94	15.84	12,600	795
						3.96	4.05	4.02	16.28	12,000	737