氯离子在水泥海排灰道路基层材料中的传播固化  

Study on Communication and Solidification of Chloride Ion in Cement Fly-Ash-Flushed-by-Seawater Road Base Material

作　　者：于玲[1] 张小芳[1] 包龙生[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2012年第5期872-877,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51078242);辽宁省教育厅重点实验室项目(LS2010136)

摘　　要：目的探索氯离子在水泥海排灰基层材料中的传播和固化过程,以及最佳的氯离子含量,为海排灰的道路工程应用提供理论依据.方法结合氯离子的传播机理以及固化机理,对水泥海排灰结合料固化氯离子的特性进行研究,通过微观试验及固化率的研究对比分析氯离子在水泥海排灰基层材料中的传播固化机理,分析氯离子的传播扩散对路用性能的影响.结果氯离子在水泥海排灰结合料中进行传播输运时,存在一个从海排灰表面到水泥凝胶内部的渗透过程,这与传统氯离子渗入混凝土的原理不同.当氯离子质量分数为0.5%时,氯离子达到最佳传播固化效果.结论与传统的氯离子渗入混凝土的机理不同,氯离子在水泥海排灰基层材料中传播后,可以被固化,证明海排灰可用于道路建设中.The process of communication and solidification is explored, and the best chloride ion content is proposed, which provides the theory basis for fly-ash-flushed-by-seawater project application. In the foundation on the mechanism for communication and solidification of chloride ion, conduct the depth research on the characteristic of solidifying the chloride ion for the mixture of cement fly-ash-flushed-by-seawater. Through the microcosmic-test and the research of solidification rate to comparative analyze, the communica- tion and solidification of chloride ion in base-materials is promulgated how to influence the road performance. The research discovered works as the chloride ion content is 0. 5 %, the chloride ion achieves the best dissemination solidification effect. It is different with the traditional chloride ion permeating concrete, and the chloride ion communication in the mixture of the cement fly-ash-flushed-by-seawater, may be solidified. This is proved that fly-ash-flushed-by-seawater may be used in the road construction.

关 键 词：氯离子含量 水泥海排灰 传播 固化反应 Friedel盐 微观结果 固化率 

分 类 号：U416.214[交通运输工程—道路与铁道工程]