摘要
目的研究水泥混凝土与凝石混凝土的抗氯离子渗透性能,为凝石混凝土的广泛应用提供实验依据.方法根据基于离子扩散和电迁移提出的NEL方法测试水泥混凝土与凝石混凝土试件的氯离子扩散系数,从孔结构、界面过渡区域以及氯离子的固化程度等几个方面分析水泥混凝土与凝石混凝土的渗透性能.结果凝石混凝土具有较小的过渡孔隙率、微观界面过渡区域具有较高的硬度,并且与氯离子的结合能力很强,使得凝石混凝土对氯离子具有很好的固化作用.结论凝石混凝土相比于水泥混凝土具有更好地抗氯离子渗透性,可以提高混凝土的耐久性.
In order to provide experimental basis for the widely application of sialite concrete, this paper stud- ies the anti-chloride ion permeability of cement concrete and sialite concrete. Through using NEL methods which is based on ion diffusion and electrical migration, the chloride ion diffusion coefficients of cement concrete and sialite concrete specimens have been measured. And then the permeability of cement concrete and sialite concrete has been analyzed in terms of porosities, the interfacial transition zone and chloride ion curing degree. The results show that sialite concrete has little ratio of porosity, higher hardness in microscopic interfacial transition zone and better curing ability. It comes true that sialite concrete has better anti-chloride ion properties than cement concrete, and so as to improve the durability of concrete.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
2014年第1期126-130,共5页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(21103112)
辽宁省教育厅科研项目(L2013235)
关键词
凝石混凝土
氯离子扩散系数
NEL法
渗透性能
sialite concrete
diffusion coefficients of chloride ion
NEL method
permeability
