Table 5: Regression coefficients.

Type of fly ash A B E
MNG1 31.7 10.3 -14.9
MNG2 41.4 21.5 -45.2
MNG3 38.0 12.4 -37.6
MNG4 39.3 14.1 -41.2
JPN 63.0 40.1 -88.0