偏高岭土高性能混凝土的强度和抗氯离子渗透性研究  

Effect of Metakaolin Volume on the Strength and Resistance to Chloride Ion Permeability of High Performance Concrete

作　　者：刘红彬[1] 盛星汉 唐伟奇[1] 肖凯璐[1] 马唯哲 施政奇 李希光[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京市100083

出　　处：《公路》2015年第2期180-184,共5页Highway

基　　金：国家自然科学基金;项目编号51374211;教育部高等学校博士学科点专项科研基金;项目编号20110023110015

摘　　要：通过5种不同偏高岭土掺量混凝土立方体、棱柱体和梁试件的抗压(单轴、轴心)、劈裂和抗折试验,以及电通量试验,研究了偏高岭土掺量对混凝土强度和抗氯离子渗透性的影响。结果表明:掺加偏高岭土后,可以有效提高混凝土的强度和显著改善抗氯离子渗透性,偏高岭土存在一个最优掺量,当掺量为15%时,混凝土的强度和抗氯离子渗透性最佳。The effects of five different metakaolin volumetric contents on strength of high performance concrete are studied by the cubic compressive, axial compressive, split tensile and flexural tensile tests. It is shown that adding metakaolin can improve the strength of concrete, and significantly enhance the resistance to chloride ion strength and resistance to permeability; the optimum volume is metakaolin is 15% when,the concrete chloride ion permeability achieve the：best performance.

关 键 词：高性能混凝土 偏高岭土 强度 氯离子渗透性 

分 类 号：U414.01[交通运输工程—道路与铁道工程]