骨料粒形的评定方法及对混凝土工作性能的影响  

Evaluation Method of Aggregate Grain Shape and its Impact on the Concrete Performance

作　　者：吴波[1] 李固华[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《建筑科学》2014年第11期93-97,共5页Building Science

基　　金：巴南高速公路科研基金R054321101010796;巴陕高速公路科研基金R054321101010931

摘　　要：骨料是混凝土的主要组成部分之一,其性能对混凝土工作性能有着重要影响。本文在分析国内外相关研究成果的基础上,总结了骨料的筛分方法、骨料粒形等对混凝土的影响。总结得出颗粒粒形是骨料的重要品质特性,且骨料的粒形可以用球度值或圆形度表示,其值越大,骨料的形状越好,配制的混凝土或砂浆拌合物的流动性越好,工作性能越好,达到相同坍落度所需要的浆体量较少。Aggregate is one of the main components of concrete, which palys a significant role on working performance. Based on the results of domestic and internal research, the method of screening aggregate and the influence of shape of aggregate on concrete are summarized. The results show that： the shape of aggregate is a significant factor of concrete, and the shape of aggregate can be represented by circle, sphericity values or round shaped ; the value is larger, the shapes of aggregate and the mobility of mixture （ concrete and motar） are better, and the working performance is better. So that the slurry will be less to achieve the same slumps.

关 键 词：混凝土 骨料 粒形 工作性能 

分 类 号：TU528[建筑科学—建筑技术科学]