A.膠凝材料計(jì)量允許偏差±3% B.粗、細(xì)骨料計(jì)量允許偏差±3% C.拌合用水計(jì)量允許偏差±2% D.外加劑計(jì)量允許偏差±0.5%
A.減水率 B.PH值 C.凝結(jié)時(shí)間差 D.抗壓強(qiáng)度比
A.4% B.5% C.6% D.0.70%