混凝土硅烷和透水模板布表层处理渗透性与冻融规律影响  

Effect of permeability of silane impregnation and controlled permeability formwork for concrete surface and regular of freezing and thawing

作　　者：钟世兴 钟军 孙万温 ZHONG Shixing;ZHONG Jun;SUN Wanwen(Shandong Transportation Institute,Shandong Jinan 250031 China)

机构地区：[1]山东省交通科学研究院,山东济南250031

出　　处：《山东交通科技》2022年第4期74-76,共3页

摘　　要：对混凝土表层采用硅烷浸渍和透水模板布两种不同的优化处理形式,通过混凝土表层渗透性对比试验表明:在适宜水灰比的前提条件下,硅烷浸渍表层在抗水渗透性方面作用较为明显,透水模板布表层在抑制透水、透气方面具有综合作用;通过与冻融循环试验结果对比分析,表层抗渗性和抗冻耐久性的提升与混凝土内部孔结构的孔径、分布、亲水与憎水性等特征密切相关。Silane impregnation and controlled permeability formwork liner are used to the concrete surface.The results of permeability test on concrete surface show that silane impregnated surface plays significant effect on water permeability resistance in the condition of appropriate ratio of water and cement,CPF liner has a comprehensive effect on water or air inhibited.The results are compared with freeze-thaw cycle test show that the improvement of surface impermeability and frost resistance is related to the size,distribution,hydrophilicity and hydrophobicity of concrete internal pore structure.

关 键 词：混凝土 表层处理 渗透性 抗冻性 

分 类 号：U415.6[交通运输工程—道路与铁道工程]