西南交通大学学报Issue(2)：342-346,353,6.DOI:10.3969/j.issn.0258-2724.2015.02.021
粉煤灰矿渣掺量对劣级配砂配制混凝土性能的影响
Effect of Dosage of Fly Ash and Blast Furnace Slag on Performance of Concrete Prepared with Poorly Graded Sand
摘要
Abstract
In order to fabricate high quality concrete using poorly graded sand,six groups of concrete with poor sand gradation were prepared with different dosages of fly ash (FA)and blast furnace slag (BFS). The sand and stone compactness of the concrete was evaluated using the Andreasen equation, and the slump and compressive strength of the concrete were tested to study the effect of the dosage of fly ash and blast furnace slag on the workability and compressive strength of the concrete prepared with poor sand gradation. The results showed that the poorly graded sand and crushed stones had an adequately dense packing;both the concrete groups with 40% FA +BFS replacement and 30% FA replacement satisfied the pumping requirement;the concrete compressive strength in each group at 56 d satisfied the requirement of the strength grade,and decreased with the increasing of the dosage of fly ash. Therefore,the effect of the FA and BFS dosage on the workability and compressive strength of the concrete with poor sand gradation and dense packing is similar to that on the concrete with normal sand gradation.关键词
粉煤灰/矿渣/劣级配/混凝土/和易性/抗压强度Key words
fly ash/blast furnace slag/poor gradation/concrete/workability/compressive strength分类
建筑与水利引用本文复制引用
李茂红,张雨杰,陈航,赵菊梅..粉煤灰矿渣掺量对劣级配砂配制混凝土性能的影响[J].西南交通大学学报,2015,(2):342-346,353,6.基金项目
中央高校基本科研业务专项资金青年教师科技创新计划资助项目 （）
