纳米材料对混凝土抗盐冻性能的影响  

The Effect of Nanomaterials on the Freeze-deicing Salt Resistance Performance of Concrete

作　　者：刘恒 LIU Heng

机构地区：[1]中铁十九局集团第三工程有限公司,辽宁沈阳110136

出　　处：《辽宁省交通高等专科学校学报》2018年第1期1-4,共4页Journal of Liaoning Provincial College of Communications

基　　金：2014年辽宁省交通厅科研项目(201412)

摘　　要：本文通过在混凝土中添加纳米SiO_2及CaCO_3来研究混凝土抗盐冻性能的影响。结果表明:当纳米SiO_2掺量为1%时,其抗压强度提高,第300次盐冻循环时,其相对动弹性模量是基准混凝土的103.33%,质量损失是基准混凝土的47.03%,抗氯离子渗透深度是基准混凝土的71.43%。总体来看,掺入纳米SiO_2对混凝土抗盐冻性能的提高优于掺入纳米CaCO_3。The freeze-deicing salt resistance effects of adding nano-sio2 and CaCO3 in concrete are studied in the article.Results show that the compressive strength increases when the nanometer SiO2 content of 1%,the 300th salt frozen loop,the relative dynamic elastic modulus is 103.33%of the reference concrete,mass loss is 47.03%of the reference concrete,resistance to chloride ion penetration depth is 71.43%of the reference concrete.In general,nano-sio2 has a better performance than nanomaterials CaCO3 on concrete freeze-deicing salt resistance.

关 键 词：纳米材料 抗盐冻 混凝土 质量损失 

分 类 号：U414[交通运输工程—道路与铁道工程]