自然养护对混凝土抗压强度及氯离子扩散系数的影响  

Effects of natural curing conditions on compressive strength and chloride ion diffusion coefficient of concrete

作　　者：陆晗[1] 王卫仑[1] 刘洪海 岳进 董晓刚 

机构地区：[1]深圳大学广东省滨海土木工程耐久性重点试验室,广东深圳518060 [2]中建三局第一建设工程有限责任公司,湖北武汉430040

出　　处：《混凝土》2013年第4期8-10,14,共4页Concrete

基　　金：广东省自然科学基金研究团队项目(9351806001000001);中国建筑第三工程局科研项目(CSCEC3B-2011-3)

摘　　要：通过自然养护和标准养护混凝土的抗压强度及氯离子扩散系数对比试验,并采用压汞法对混凝土进行孔结构分析。研究表明:相比于标准养护混凝土,自然养护混凝土的有害孔增多,这对混凝土抗压强度的发展虽无明显的不利影响,但却明显增大了混凝土氯离子扩散系数。The compressive strength and chloride ion diffusion coefficient of concrete cured in standard condition and in natural environment were researched contrastively, and method of mercury intrusion porosimetry（MIP ） was used to examine the pore structure of the concrete.Test result indicated that：compared with standard curing,concrete cured in natural environment showed more harmful pores,this may have little effects on the development of compressive strength of concrete, but it increased the chloride ion diffusion coefficient of concrete markedly.

关 键 词：自然养护 标准养护 抗压强度 氯离子扩散系数 孔结构 

分 类 号：TU528.064[建筑科学—建筑技术科学]