Influence of Ultrafine Natural Steatite Powder on Setting Time and Strength Development of Cement

Table 3

Compressive strength of mortar cubes.

S. number	Mix IDs	3-day strength in MPa	SD in MPa	CO-VAR in %	7-day strength in MPa	SD in MPa	CO-VAR; in %	28-day strength in MPa	SD in MPa	CO-VAR; in %
1	C0	29.00	2.39	8.23	37.00	2.19	5.92	45.00	2.00	4.44
2	C5	33.00	1.90	5.75	40.00	1.79	4.47	49.50	1.38	2.78
3	C10	42.00	1.10	2.61	47.00	1.10	2.33	52.00	1.10	2.11
4	C15	44.00	1.10	2.49	49.00	0.89	1.83	52.50	0.84	1.59
5	C20	37.00	2.37	6.40	45.00	1.79	3.98	48.00	1.67	3.49
6	C25	23.00	3.90	16.95	30.00	2.45	8.16	39.00	2.10	5.38