Numerical Analysis of Microcracks of Fly Ash/Slag Concrete with Cobble as Coarse Aggregate

Table 2

Orthogonal experiment results.

Number		Mixing amount of fly ash (A) (%)	Mixing amount of slag powder (B) (%)	Gradation of large size cobble (C) (%)	F 28 d cu MPa
A1B1C1	5		5	20% : 80%	4.01
A1B2C2	5		10	30% : 70%	4.34
A1B3C3	5		15	40% : 60%	5.01
A1B4C4	5		20	50% : 50%	4.43
A2B1C2	10		5	30% : 70%	4.39
A2B2C1	10		10	20% : 80%	5.19
A2B3C4	10		15	50% : 50%	4.61
A2B4C3	10		20	40% : 60%	4.84
A3B1C3	15		5	40% : 60%	4.86
A3B2C4	15		10	50% : 50%	4.97
A3B3C1	15		15	20% : 80%	4.46
A3B4C2	15		20	30% : 70%	4.65
A4B1C4	20		5	50% : 50%	4.53
A4B2C3	20		10	40% : 60%	4.42
A4B3C2	20		15	30% : 70%	4.81
A4B4C1	20		20	20% : 80%	4.00