Table 1: The mix proportion of big mobility concrete in per cubic meter.

Cement Sand Fly ash Water   (kg/m3) (kg/m3) (kg/m3) (kg /m3) C15 220 642 110 180~190 C20 290 615 80 180~190 C30 390 587 70 180~190 C40 410 568 70 170~180 C50 480 520 60 170~180