广东水利水电Issue(6)：64-68,5.
骨料级配优化对混凝土胶凝材料用量的影响
Effect of Gradation Optimization of Aggregate on Binder Content in Concrete
蔡杰龙 1杨永民 1李伟1
作者信息
- 1. 广东省水利水电科学研究院，广东省水利重点科研基地，广东广州 510635
- 折叠
摘要
Abstract
Aggregate Gradation optimization is of great importance in improving the working performance of concrete and saving binder content.In this article, gradation of coarse aggregate and fine aggregate is respectively optimized to obtain the aggregate with higher bulk density and lower voidage .Then design mix of concrete experiments on two kinds of concrete ( field concrete , pump concrete) and three kinds of grades(C20, C25, C30) are carried out to compared the binder content in an unit of concrete before and after gradation of aggregate is optimized .Finally, checking computations is implemented by example .It is shown that the binder content in an unit of concrete gets an certain degree of reduction if the ratio of fine sand (≤0.315mm) in fine aggregate is proper and a certain proportion of 5 ~10mm gravel is mixed into 5 ~31.5mm or 5 ~25mm gravel.And the result accords with the theoretical checking computations .Gradation optimization of aggregate is easily operability and suitable for promotion in concrete manufacturing enterprise .关键词
粗骨料/细骨料/级配优化/混凝土/胶凝材料用量Key words
coarse aggregate/fine aggregate/gradation optimization/concrete/binder content分类
建筑与水利引用本文复制引用
蔡杰龙,杨永民,李伟..骨料级配优化对混凝土胶凝材料用量的影响[J].广东水利水电,2014,(6):64-68,5.
