VAE乳胶粉掺量对苯丙乳液基水泥复合填缝料拉伸和剪切性能的影响  

Effect of VAE Latex Powder Addition on Tensile and Shear Properties of Styrene-Acrylate Based Cement Composite Joint Compound

作　　者：孟博旭 许金余[1,2] 顾超 彭光 MENG Bo-xu;XU Jin-yu;GU Chao;PENG Guang(Airport Construction Engineering Office,Air Force Engineering University,Xi'an 710038,China;Institute of Mechanics and Civil Architecture,Northwest Polytechnic University,Xi'an 710072,China)

机构地区：[1]空军工程大学机场建筑工程教研室,西安710038 [2]西北工业大学力学与土木建筑学院,西安710072

出　　处：《硅酸盐通报》2019年第6期1713-1718,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51208507,51378497)

摘　　要：为研究VAE乳胶粉掺量对苯丙乳液基水泥复合填缝料(PCJS)拉伸和剪切性能的影响,进行了不同VAE乳胶粉掺量下(0~5%)PCJS的拉伸试验和剪切试验。试验结果表明,VAE乳胶粉的掺入,改善了PCJS的拉伸和剪切力学性能,当乳胶粉掺量为5%时,同无乳胶粉掺入的PCJS相比,PCJS的拉伸模量和剪切模量提高了32%和35%;随着VAE乳胶粉掺量的增加,PCJS的拉伸和剪切变形性能均先增大后减小,乳胶粉掺量为3%时,PCJS的剪切变形性能最佳;VAE乳胶粉的掺入,对PCJS拉伸断裂伸长率的改善效果不明显。另外,针对VAE乳胶粉对PCJS拉伸和剪切性能的影响进行了机理分析。In order to study the effect of VAE latex powder on the tensile and shear properties of styrene-acrylic emulsion-based cement compound joint compound (PCJS), the tensile test and shear test of PCJS under different VAE latex powder content (0-5%) was carried out. The test results show that the incorporation of VAE latex powder improves the tensile and shear mechanical properties of PCJS. When the amount of latex powder is 5%, compared with PCJS without latex powder, the shear modulus of PCJS increased by 32% and 35%;with the increase of VAE latex powder, the tensile and shear deformation properties of PCJS increased first and then decreased. When the amount of latex powder is 3%, the shear deformation performance of PCJS is the best;the incorporation of VAE latex powder has no obvious effect on the tensile elongation improvement of PCJS at break. In addition, the mechanism analysis of the effect of VAE latex powder on tensile and shear properties of PCJS is carried out.

关 键 词：填缝料 VAE乳胶粉 拉伸性能 剪切性能 

分 类 号：TU525[建筑科学—建筑技术科学]