减缩剂对高性能砼收缩开裂性能影响的研究  

Study on Shrinkage-Cracking Property of HPC by Shrinkage-Reducing Admixture

作　　者：王迎飞[1] 黄雁飞[1] 

机构地区：[1]广州四航工程技术研究院中港集团建筑材料重点实验室,广州510230

出　　处：《硅酸盐通报》2006年第3期189-193,共5页Bulletin of the Chinese Ceramic Society

基　　金：中港集团企业自主开发项目编号(中港四2004B11)

摘　　要：本文设计了干燥收缩、自收缩、平板约束、抗氯离子渗透性以及极限拉应变等5种试验方法来考核减缩剂对高性能混凝土收缩开裂性能的影响。研究结果表明:减缩剂能够改善高性能混凝土的工作性、对混凝土的力学性能无负作用、能够有效的提高混凝土的抗裂性能。This paper is to analyzed the influenced effect on shrinkage-cracking property of HPC by SRA, by means of designing five check-up experiments such as desiccation-shrinkage, autogenous shrinkage, flat-restraint,anti-chloride ion penetration and ultimate tensile strain etc. The results is to approve that SRA can improve the workability of HPC, and promote effectively anti-cracking performance, without coming negative effect into mechanics property.

关 键 词：高性能混凝土 收缩开裂 减缩剂 干燥收缩 自收缩 约束试验 氯离子渗透 极限拉应变 

分 类 号：TU755.32[建筑科学—建筑技术科学] TU528.042