摘要
在水泥混凝土中掺入膨胀剂制得的补偿收缩混凝土具有有效减少混凝土早期自收缩、降低混凝土结构开裂风险的良好性能.本文总结了各类膨胀剂的膨胀机理,结合国内外学者对膨胀剂的研究成果,概述了各类膨胀变形测试方法的优缺点,阐述了影响膨胀剂发挥效能的因素,为工程实践中膨胀剂的使用提供参考.
Shrinkage-compensating concrete made by blending expansive additive into cement concrete has good performance of decreasing early-age autogenous shrinkage and reducing risk of cracking in concrete structures effectively. According to achievements of expansive additive in domestic and foreign countries, the mechanism of expansion of different expansive additives is reviewed; the merits and demerits of different measuring methods on expansion are generalized; and the factors influencing the function of expansive addi- tives are expounded, so as to provide for reference in practical applications. The tendency of research on ex- pansive additive is also presented.
出处
《三峡大学学报（自然科学版）》
CAS
2016年第4期60-65,共6页
Journal of China Three Gorges University：Natural Sciences
基金
国家自然科学基金项目(51309090)
关键词
膨胀剂
机理
测试方法
影响因素
expansive additive
mechanism
measuring method
influencing factor
作者简介
通信作者：赵海涛（1978-），男，副教授，博士，主要研究方向为混凝土早龄期性能及裂缝控制．E-mail：zhaoht@hhu．edu．cn
