硅酸盐通报2024，Vol.43Issue(7)：2565-2576,12.
花岗岩尾矿砂制备砂浆的黏结性能研究
Adhesion Property of Mortar Prepared by Granite Tailing Sand
何娟 1刘双 1宋学锋 1徐单汉苏 1李萌萌1
作者信息
- 1. 西安建筑科技大学材料科学与工程学院,西安 710055
- 折叠
摘要
Abstract
Granite tailing sand(GTS)was used to prepare mortar.The influences of binder-sand ratio,polyvinyl alcohol latex powder(PVAP)and polyvinyl alcohol fiber(PVAF)on the adhesion property of mortar were studied.The relationship between mortar failure mode and tensile adhesion strength was analyzed,and its micro-mechanism was studied by SEM.The results show that the adhesion property of the mortar is improved by single-doped with PVAP or PVAF,and be optimal when PVAP and PVAF are mixed-doped.When the binder-sand ratio for mortar is 1∶2,PVAP is 0.9％(mass fraction)and PVAF is 1.5％(volume fraction),the adhesion property of mortar is optimal,and the 28 d tensile adhesion strength is up to 1.75 MPa.The failure mode of mortar is affected by the tensile adhesion strength.The failure mode is mostly interfacial failure when PVAP and PVAF are not added.The failure mode is mostly matrix failure when PVAP and PVAF are mixed-doped.The failure mode is mostly interface-matrix failure when PVAP or PVAF is single-doped.关键词
花岗岩尾矿砂/黏结性能/拉伸黏结强度/破坏形式/胶砂比Key words
granite tailing sand/adhesion property/tensile adhesion strength/failure mode/binder-sand ratio分类
建筑与水利引用本文复制引用
何娟,刘双,宋学锋,徐单汉苏,李萌萌..花岗岩尾矿砂制备砂浆的黏结性能研究[J].硅酸盐通报,2024,43(7):2565-2576,12.
