探究砂石含泥量对聚羧酸高性能减水剂的影响  

Effect of Mud Content of Sand Gravel on Polycarboxylate High-performance Water-reducer

作　　者：黄剑 王鹏 HUANG Jian;WANG Peng(Guangdong Provincial Nanyue Transportation Investment&Construction Co.,Ltd.,Guangzhou,Guangdong 510000,China)

机构地区：[1]广东省南粤交通投资建设有限公司,广东广州510000

出　　处：《山西交通科技》2021年第2期40-42,共3页Shanxi Science & Technology of Transportation

摘　　要：外加剂的应用改善了新拌混凝土及硬化混凝土的性能,促进混凝土新技术的快速发展,对能源、资源的节约和环境保护起到重要作用。减水剂尤其是聚羧酸高性能减水剂的减水率是受砂石地材含泥量大小直接影响,也是导致新拌混凝土坍落度损失过快的重要原因之一。主要通过试验设想探究砂石含泥量对聚羧酸高性能减水剂的减水效应的影响,以提高现场混凝土拌制质量。The application of admixtures improves the performance of fresh concrete and hardened concrete,stimulates the rapid development of new concrete technologies, and plays an important role in saving energy and resources and protecting environment. The water reduction rate of water-reducer, especially polycarboxylate highperformance water-reducer, is directly affected by the mud content of sand gravel. That is also one of the important reasons for the fast slump loss of fresh concrete. This paper studied the effect of mud content of sand gravel on polycarboxylate high-performance water-reducer by experiments, in order to improve the quality of in-situ concrete mixing.

关 键 词：外加剂 含泥量 坍落度 坍落度损失 

分 类 号：U414.18[交通运输工程—道路与铁道工程]