氯盐在水泥海排灰结合料中的固化机理  

Study on Bonding Mechanism of Chloride in the Cement Sea-Fly-Ash Binder

作　　者：包龙生[1] 宋晓纯[1] 于玲[1] 王海军 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]营口公路勘测设计所,辽宁营口115000

出　　处：《沈阳建筑大学学报（自然科学版）》2010年第1期36-40,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省教育厅科技攻关项目(2008586)

摘　　要：目的通过内掺氯盐对水泥海排灰结合料微观结构的分析,揭示内掺氯盐的水泥海排灰结合料的固化机理.方法采用SEM、XRD和理论分析的方法对水泥海排灰结合料的性能和微观结构进行研究,并且分析含氯盐的水泥海排灰的固化机理.结果当海排灰中含有氯盐时,水泥海排灰结合料7d、28d龄期均能生成一种新的晶体—Friedel盐;海排灰中掺加质量分数为0.5%氯盐的结合料试件经过无侧限强度试验7d龄期强度较高,28d龄期强度最高.结论海排灰中的氯盐可以在水泥海排灰结合料中得到固化,从而提高结合料的强度.The influence of different slat content on the microstructure of cement and fly-ash-flushed-by-seawater binder is analyzed. The bonding mechanism of salt added cement and fly-ash-flushed-by-seawater binder is investigated. The Scanning Electron Microscope test, X-Ray diffraction and theoretical analysis method are adopted to study the performance and the microstructure of cement and fly-ash-flushed-by-seawater, and to analyze the bonding mechanism of chloride in the mixture. When content of the chloride ions is added to the cement and fly-ash-flushed-by-seawater binder, a new kind of crystal can be generated in the age of 7 d and 28 d. According to the unconfined strength test on the specimens which contain 0.5 % chloride ions,the strength is higher in 7 d, and highest in 28 d. The chloride ions of the fly-ash-flushed-by-seawater can be bonded in the cement and fly-ash-flushed-by-seawater binder, which can increase the strength of the binder.

关 键 词：海排灰 氯离子 Friedel盐 水泥胶体 

分 类 号：U416.214[交通运输工程—道路与铁道工程]