矿物掺合料对混凝土耐久性的影响  

THE INFLUENCE OF MINERAL ADMIXTURE ON CONCRETE DURABILITY

作　　者：宋宪辉 葛昕[2] 葛勇[2] 蔡小平[2] 杨文萃[2] 

机构地区：[1]辽宁省高等级公路建设局,沈阳110000 [2]哈尔滨工业大学交通科学与工程学院,哈尔滨150090

出　　处：《低温建筑技术》2014年第6期3-5,共3页Low Temperature Architecture Technology

摘　　要：选择粉煤灰和矿渣作为混凝土矿物掺合料,以不同掺量,采用单掺和复掺的形式设计了7种配合比,研究矿物掺合料对混凝土抗渗性和抗冻性的影响。试验结果表明:粉煤灰、矿渣的掺入可以提高混凝土的抗渗性,掺量小于30%时,随着掺量的增加,混凝土抗渗性提高。粉煤灰和矿渣单掺时,会降低混凝土的抗盐冻性能;复掺时,当掺量小于最佳掺量时,可改善混凝土的抗盐冻性能,超过最佳掺量后,混凝土的抗盐冻性能降低,本试验中最佳掺量值为15%。Fly ash and slag as the mineral admixture on concrete is chosen to be the variable quantity in the article. Seven kinds of mix proportions are made up to research the influence to the permeability resistance and frost resistance. The results shows： mixing the fly ash and slag increases the permeability resistance. When both the fly ash and slag are mixed below 30%, the permeability resistance is enhanced. The frost resistance is reduced with mixing the fly ash and slag. There is a best mixing amount on mixing both fly ash and slag in concrete. Salt frost resistance is improved with below the best mixing amount. At the same time, salt frost resistance is reduced with above the best mixing amount. The best mixing amount in the test is 15%.

关 键 词：矿物掺合料 抗冻性 抗渗性 

分 类 号：TU528.041[建筑科学—建筑技术科学]