可再分散乳胶粉与硅灰改性水泥基透水混凝土性能对比研究  

Comparative Study on Properties of Cement Pervious Concrete Modified by Redispersible Polymer Powder and Silica Fune

作　　者：骆静静[1] 张磊蕾[2] 刘远祥[1] 满丽莹[1] LUO Jing-jing;ZHANG Lei-lei;LIU Yuan-xiang;MAN Li-ying

机构地区：[1]苏州混凝土水泥制品研究院有限公司江苏省高耐久混凝土工程技术研究中心,215004 [2]中国建筑材料科学研究总院,北京100024

出　　处：《混凝土与水泥制品》2018年第12期23-26,共4页China Concrete and Cement Products

基　　金：国家重点研发计划课题(2016YFC0701001);江苏省住建厅科技计划项目(2015JH09);苏州市民生科技计计划项目(SS201826)

摘　　要：采用硅灰和可再分散乳胶粉对透水混凝土进行改性,研究了两者对透水混凝土浆体扩展度、力学性能、透水性能和抗冻性能的影响。结果表明,硅灰会提高浆体的黏度、降低浆体的扩展度,提高透水混凝土的力学性能和抗冻性能,但会降低其透水性能,脆性增大,推荐硅灰掺量为2%～4%;可再分散乳胶粉会改变浆体黏度,调节透水混凝土浆体的工作状态,降低透水混凝土强度,改善透水混凝土的脆性,推荐可再分散乳胶粉的掺量为2%～4%,可以获得较好的综合性能。The effects of silica fume and redispersible polymer powder on the slurry expansion,mechanical properties,water permeability and freezing resistance of permeable concrete were studied.The experiment results show silica fume can increase the viscosity of the slurry,reduce the expansion of the slurry,improve the mechanical properties and frost resistance of the permeable concrete;but may decrease the permeability and increase the brittleness of the permeable concrete.Recommended content of silica fume for using in permeable concrete is in the range of 2%to 4%.The air-entraining effect and surfactant composition of latex powder can change the viscosity of the slurry and adjust the working state of the permeable concrete,will result in the decrease of the strength of the permeable concrete,but can improve the brittle failure characteristics of the permeable concrete.The recommended amount of latex powder for using in permeable concrete is in the range of 2%to 4%,and the better comprehensive performance can be obtained.

关 键 词：透水混凝土 硅灰 可再生乳胶粉 扩展度 强度 透水性能 抗冻性能 

分 类 号：TU528[建筑科学—建筑技术科学]