三峡大坝全级配混凝土力学性能试验研究

Experimental Study On Mechanical Properties of Fully Graded Aggregate Concrete in TGP

对骨料最大粒径为８０ｍｍ的三峡大坝全级配混凝土的力学性能进行了试验，并与相同配比经湿筛的混凝土标准试件的力学性能进行了比较。结果表明二者在性能上有较大差别，主要表现为大骨料对混凝土的轴向抗拉强度和极限拉伸值影响最大。同时还给出了全级配混凝土和湿筛后混凝土各项力学性能的比值，供设计参考。

The mechanical properties of fully graded aggregate concrete in the TGP, in which the maximum particle size of aggregate is 80mm, was studied. The results were compared with the corresponding proportion of the same mix proportion concrete from a wet screened standard sample. It was shown that the properties of the former are quite different from the latter expressing the great influences of the large aggregates on the tensile strength and ultimate tensile strain. The ratioes of the mechanical properties of fully graded aggregate concrete to that of wet screened concrete are given in the paper.