冻融影响掺合料再生混凝土抗氯离子渗透性能的试验研究  

Experimental Study of Freeze-thaw's Influence on Resistance to Chloride Ion Penetration into Recycled Concrete with Mineral Admixture

作　　者：王国林[1] 吴相豪[1] 杨姗姗[1] 

机构地区：[1]上海海事大学海洋环境与工程学院,上海201306

出　　处：《粉煤灰》2013年第1期34-36,共3页Coal Ash China

摘　　要：采用ASTM C1202法研究了冻融对掺合料再生混凝土抗氯离子渗透性能的影响规律。试验结果表明,冻融对粉煤灰再生混凝土抗氯离子渗透性能的影响比较大,随着冻融次数的增加,粉煤灰再生混凝土抗氯离子渗透能力逐渐减弱。冻融初期,冻融对粉煤灰-石灰粉再生混凝土抗氯离子渗透性能影响较小;冻融次数超过10次后,随着冻融次数的增加,冻融对粉煤灰-石灰粉再生混凝土抗氯离子渗透性能影响逐渐增强。The rapid chloride permeability test method （ASTM C 1202） was used to research influences of freeze-thaw on antichloride-permeability performances of recycled concrete. The results showed that freeze-thaw cycle has clear implications for the anti-chloride-permeability performances of fly ash recycled concrete. With the increase of freeze-thaw times, the capacity of resistance to chloride ion permeability of fly ash recycled concrete decreased gradually. At the early stage of freeze-thaw, the ability of anti-chloride ion permeability of recycled concrete mixed with fly ash and lime powder is less affected by freeze-thaw. After 10 times freeze-thaw cycle, freeze-thaw has an ever-increasing impact on the anti-chloride ion ability of recycled concrete mixed with fly ash and lime powder.

关 键 词：冻融 粉煤灰 再生混凝土 氯离子 渗透性能 

分 类 号：TU528.09[建筑科学—建筑技术科学]