混凝土抗离析剂的制备及性能研究
Preparation and Performance Study of Concrete Anti-segregation Agent
王锋 1钟波 1刘涛 1胡朝声 1何子杨 2万振东2
作者信息
- 1. 中铁大桥局集团第五工程有限公司,江西 九江 332001
- 2. 江西省建材科研设计院有限公司,江西 南昌 330001
- 折叠
摘要
将分子量为500 万的阴离子型聚丙烯酰胺与分子量为600 万聚丙烯酸钠以6∶4 的比例复配,可以得到一种有效解决混凝土离析分层,提高混凝土的流动性和匀质性的混凝土抗离析剂.文中研究了该混凝土抗离析剂对混凝土和易性、坍落度损失、凝结时间及抗压强度的影响,结果表明,抗离析剂W可以大幅改善离析混凝土的流动性、坍落度及经时损失,对凝结时间影响不大且可以明显提高抗压强度.
Abstract
A concrete anti segregation agent can be obtained by compounding anionic polyacrylamide with a molecular weight of 5 million and sodium polyacrylate with a molecular weight of 6 million in a ratio of 6:4,which can effectively solve the problem of concrete segregation and layering,improve the fluidity and uniformity of concrete.This article investigates the effects of the anti segregation agent on the workability,slump loss,setting time,and compressive strength of concrete.The experimental results show that anti segregation agent W can significantly improve the flowability,slump,and time loss of segregated concrete,with little effect on setting time and a significant increase in compressive strength.
关键词
混凝土/抗离析剂/制备Key words
Concrete/Anti-segregation agent/Preparation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据