Mechanical Properties of Energy Efficient Concretes Made with Binary, Ternary, and Quaternary Cementitious Blends of Fly Ash, Blast Furnace Slag, and Silica Fume

International Journal of Concrete Structures and Materials

Table 9 Modulus of elasticity.

Specimen name		Modulus of elasticity				Ratio of modulus of elasticity at 7 days to observed values at 28, 56 and 91 days
Specimen name		7 days	28 days	56 days	91 days	7/28	7/56	7/91
Group I	FA15	24.9	26.3	27.1	28.0	0.95	0.92	0.89
	FA25	23.6	25.5	29.8	30.8	0.93	0.79	0.77
	SF5	27.8	30.2	33.8	34.2	0.92	0.82	0.81
	BS25 + FA25	20.4	26.8	21.0	32.2	0.76	0.97	0.63
	BS30 + FA30	13.8	22.9	25.1	26.9	0.60	0.55	0.51
	BS50	21.9	24.2	29.7	31.2	0.90	0.74	0.70
	BS65 + SF5	19.6	21.7	26.0	28.1	0.90	0.75	0.70
Group II	FA25	25.9	27.1	30.9	32.4	0.96	0.84	0.80
	SF5	33.0	33.4	35.7	36.0	0.99	0.92	0.92
	BS25 + FA25	20.7	31.0	32.3	32.6	0.67	0.64	0.63
	BS30 + FA30	18.0	24.1	28.8	30.2	0.75	0.63	0.60
	BS50	19.0	25.8	30.8	32.0	0.74	0.62	0.59
	BS65 + SF5	20.1	21.7	28.3	30.2	0.93	0.71	0.67
Group III	FA25 + SF5	27.9	30.2	31.2	33.2	0.92	0.89	0.84
	SF5	33.3	35.9	35.9	36.7	0.93	0.93	0.91
	BS25 + FA20 + SF5	26.5	34.6	34.7	35.0	0.77	0.76	0.76
	BS30 + FA25 + SF5	18.7	24.6	31.5	33.2	0.76	0.59	0.56
	BS45 + SF5	25.1	30.8	33.6	35.2	0.81	0.75	0.71
	BS65 + SF5	21.4	30.7	34.3	34.6	0.70	0.62	0.62