纳米SiO_2对高性能混凝土力学性能的影响  

Influence of nano SiO_2 on mechanical property of the high performance concrete

作　　者：张海燕[1] 吴勇军[1] 

机构地区：[1]三门峡职业技术学院建筑系,河南三门峡472000

出　　处：《新型建筑材料》2012年第7期78-80,共3页New Building Materials

基　　金：科技部科技人员服务企业资助项目(2009GJD00016);河南省教育厅自然科学基金项目(2011A460005)

摘　　要：在混凝土中掺入纳米SiO2制备高性能混凝土,测试其力学性能。结果表明,对于同一种的混凝土,掺不同量的纳米SiO2后均能不同程度地提高混凝土的抗压强度,其中当纳米SiO2掺量为3%时,7 d龄期的混凝土抗压强度增强效果明显,较基准混凝土提高8.4%。In this paper, the high performance concrete is prepared by adding nano SiO2 into concrete,and its mechanical properties are tested. The result shows that for the same kind of concrete,the early and late concrete compressive strength is im- proved in different degrees by adding different amount of nano SiO2, and when the percentage of nano SiO2 is 3%,the compressive strength of concrete in 7 days is improved observably,which is 8.4% up compared to the reference concrete.

关 键 词：纳米SIO2 高性能混凝土 水胶比 抗压强度 

分 类 号：TU528.59[建筑科学—建筑技术科学]