纤维复掺对干混砂浆性能的影响研究  

Influence Study of Multi-mixing Fibers on Properties of Dry-mixed Mortar

作　　者：刘煦[1] 霍冀川[1] 邓跃全[1] 董发勤[1] 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室,绵阳621010

出　　处：《混凝土与水泥制品》2012年第3期45-48,共4页China Concrete and Cement Products

基　　金：四川省非金属复合与功能材料重点实验室(西南科技大学)开放课题(10zxfk08)

摘　　要：研究了玄武岩纤维、聚乙烯醇纤维、聚丙烯纤维单掺及复掺对砂浆抗渗抗裂性能、吸水率、抗压抗折强度、线膨胀率的影响。结果表明,纤维能提高砂浆的抗渗抗开裂性能,降低砂浆吸水率,提高砂浆柔韧性,产生一定的膨胀以抵抗砂浆的内部收缩。纤维增强干混砂浆,复掺比单掺效果好。单掺时,增强效果为聚乙烯醇纤维>玄武岩纤维>聚丙烯纤维;复掺时,玄武岩纤维:聚乙烯醇纤维:聚丙烯纤维=1:0:2时,砂浆的抗渗抗裂性能及力学性能达到最佳。The influences of multi-mixing basalts fibers（BF）,polyvinyl alcohol fiber（PVA） and polypropylene fiber（PPF） on impermeability,anti-cracking,water absorption,compressive strength,flexural strength,linear expansion rate of the mortar are investigated.The results show that fiber can improve the impermeability,anti-cracking and flexibility,reduce the water absorption of mortar,and resist internal shrinkage of mortar by producing certain expansion.Meanwhile,the properties of mortar is better reinforced with fibers multi-mixed than only mixed,and when fibers only-mixed,enhancing effect： PVABFPPF.However,the impermeability,anti-cracking and mechanical properties of mortar reached optimum when BF： PVA： PPF=1：0：2.

关 键 词：玄武岩纤维 聚乙烯醇纤维 聚丙烯纤维 干混砂浆 

分 类 号：TU528.572[建筑科学—建筑技术科学]