混凝土泌水容易引起砂线、麻面等看得见的缺陷,也一定程度上影响混凝土性能。混凝土泌水受多种因素控制。本文采用正交设计方法,综合考虑砂率、粉煤灰和引气剂对混凝土泌水的影响。研究发现,三种方法均能改善混凝土泌水,但需注意矿物掺合料和引气剂对强度损失的影响。 Concrete bleeding can easily cause observable defects such as sand lines and pockmarks, and it also affects the performance of concrete to some extent. Concrete bleeding is controlled by various factors. In this paper, an orthogonal design method is used to comprehensively consider the influence of sand rate, fly ash and air-entraining agents on the bleeding of concrete. The study found that all three methods can improve concrete bleeding, but attention should be paid to the effect of mineral admixtures and air-entraining agents on the strength loss.