Prediction of the Compressive Strength of Concrete Admixed with Metakaolin Using Gene Expression Programming

Table 6

Compressive strength of metakaolin concrete for grade M15.

Water/binder ratio	Metakaolin (%)	28-day compressive strength (N/mm^2)
0.4	0	19.5
	5	20.2
	10	21
	15	20
	20	17
0.5	0	18
	5	19.8
	10	20
	15	16
	20	14.7
0.6	0	17
	5	17.7
	10	19
	15	15
	20	13