A.勾縫砂漿 B.砌磚砂漿 C.砌石砂漿 D.抹面砂漿
A.1份水泥2份砂4份石子,水灰比為0.4 B.1份砂2份水泥4份石子,水灰比為0.4 C.1份水泥2份砂4份石子,灰水比為0.4 D.1份砂2份水泥4份石子,灰水比為0.4
A.減水劑 B.早強(qiáng)劑 C.加氣劑 D.速凝劑