1:2:4.01=288:(砂):(石子),(砂)=288*2/(1-2.8%)=592.6kg,(石子)=288*4.01/(1-1.5%)=1172.47kg,水=0.55*288-(592.6*2.8%+1172.47*1.5%)=124.22kg。施工配合比,水泥:砂:石子:水=288:592.6:1172.47:124.22