基础大体积混凝土粗骨料的选择

骨料的粒径大小和骨料的品种不同,对基础大体积混凝土的抗裂性影响较大,骨料的粒径增大,将影响到混凝土的极限拉伸能力,骨料品种的热胀系数过大,也将影响到基础大体积混凝土的抗裂性,为提高基础大体积混凝土极限抗拉能力应选择合适骨料粒径和骨料品种,并进行最佳级配。

CHOICE OF COARSE AGGREGATE OF MASS CONCRETE OF FOUNDATEON

A aggregate size and variety of aggregate is different,resisting the splitting of great influence to mass concrete of foundation,one of the aggregate increases directly,the limit that will influence the concrete draws ability,the hot bloated coefficient of the variety of aggregate is too big,will influence the resisting the splitting of mass concrete of foundation too,for improve mass concrete of foundation limit of draw ability should choose suitable aggregate grain size and aggregate variety,and the best grade mix.