2Langley W S,Carette G G,Malhotra V M.Structural concrete incorporating high volumes of ASTM class J fly ash. ACI Materials Journal . 1989
3Dhir P K,ApLe A G,Munday G L.Effect in source variability of pulverized-fuel ash upon the strength of OPC/PFA concrete. Magazine of Concrete Res . 1981
4Naik T R,Ramme B W.High-stength concrete containing large quantities of fly ash. ACI Materials Journal . 1989
5Metha P K.Influence of fly ash characteristics on the strength of Portland-fly ash mixtures. Cement and Concrete Composites . 1985