期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Influence of superplasticizers on the early-age crack resistance of concrete 被引量:1
1
作者 钱春香 陆旺杰 +3 位作者 何智海 范凌志 曲军 郭景强 《Journal of Southeast University(English Edition)》 EI CAS 2012年第1期41-45,共5页
In order to improve the early-age cracking resistance of concrete, different types of superplasticizers are used. Two types of polycarboxlic salt/acid superplasticizers and one retarding naphthalene superplasticizer a... In order to improve the early-age cracking resistance of concrete, different types of superplasticizers are used. Two types of polycarboxlic salt/acid superplasticizers and one retarding naphthalene superplasticizer are selected to investigate the influence of superplasticizers on the early-age cracking resistance of the concrete by using the slab test and the temperature-stress test. The results show that the polycarboxlic salt/acid superplasticizer cannot always improve the cracking resistance capacity of the concrete compared with the naphthalene superplasticizer, which is related to the chemical structure of the polycarboxlic salt/acid superplasticizer. High plastic tensile strength and dynamic elastic modulus at the early stage are beneficial to avoid cracking, and low hydration heat is also helpful. The evolutions of the drying shrilakage stress and the hydration heat temperature stress varying with time can be comprehensively evaluated by means of the slab test and the temperature stress test. 展开更多
关键词 SUPERPLASTICIZER crack resistance slab testmethod temperature-stress test method
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部