Table 7 Reduction in cement percentage...

Table 7

Reduction in cement percentage by using fly ash to replace cement partially

Cement-only design benchmark	Alternative fly-ash-blended cement design			Reduction in cement: %
Cement-only content: %	Total mixture content: %	Cement: %	Fly ash: %	Reduction in cement: %
10 (UCS = 64.6 kPa)	10.59	8.47	2.12	15.33
	11.17	8.38	2.79	16.25
	11.31	7.54	3.77	24.59
	14.23	7.11	7.11	28.86

15 (UCS = 140.9 kPa)	15.18	12.15	3.04	19.03
	15.99	11.99	4	20.06
	16.68	11.12	5.56	25.87
	21.69	10.84	10.84	27.72

20 (UCS = 291.0 kPa)	21.38	17.1	4.28	14.48
	22.49	16.87	5.62	15.67
	24.15	16.1	8.05	19.52
	32.51	16.26	16.26	18.72

25 (UCS = 499.4 kPa)	27.75	22.2	5.55	11.21
	29.16	21.87	7.29	12.53
	32.04	21.36	10.68	14.56
	44.48	22.24	22.24	11.03

30 (UCS = 887.4 kPa)	36.9	29.52	7.38	1.61
	38.75	29.07	9.69	3.12
	43.75	29.16	14.58	2.79
	63.17	31.58	31.58	−5.28

Cement-only design benchmark	Alternative fly-ash-blended cement design			Reduction in cement: %
Cement-only content: %	Total mixture content: %	Cement: %	Fly ash: %	Reduction in cement: %
10(UCS = 64.6 kPa)	10.59	8.47	2.12	15.33
	11.17	8.38	2.79	16.25
	11.31	7.54	3.77	24.59
	14.23	7.11	7.11	28.86

15(UCS = 140.9 kPa)	15.18	12.15	3.04	19.03
	15.99	11.99	4	20.06
	16.68	11.12	5.56	25.87
	21.69	10.84	10.84	27.72

20(UCS = 291.0 kPa)	21.38	17.1	4.28	14.48
	22.49	16.87	5.62	15.67
	24.15	16.1	8.05	19.52
	32.51	16.26	16.26	18.72

25(UCS = 499.4 kPa)	27.75	22.2	5.55	11.21
	29.16	21.87	7.29	12.53
	32.04	21.36	10.68	14.56
	44.48	22.24	22.24	11.03

30(UCS = 887.4 kPa)	36.9	29.52	7.38	1.61
	38.75	29.07	9.69	3.12
	43.75	29.16	14.58	2.79
	63.17	31.58	31.58	−5.28

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