基于X-CT技术的透水混凝土透水性能研究  

Research on the pervious performance of pervious concrete based on X-CT technology

作　　者：杨枫林 赵亚松 倪凯翔 杨锋 高建明[2] YANG Fenglin;ZHAO Yasong;NI Kaixiang;YANG Feng;GAO Jianming(Nantong Construction Concrete Co.,Ltd.,Nantong 226000,China;School of Materials Science and Engineering,Southeast University,Nanjing 211100,China)

机构地区：[1]南通市建设混凝土有限公司,江苏南通226000 [2]东南大学材料科学与工程学院,江苏南京211100

出　　处：《混凝土与水泥制品》2025年第1期1-6,共6页China Concrete and Cement Products

基　　金：国家自然科学基金项目(52171254)。

摘　　要：介绍了一种利用X-CT技术表征透水混凝土试件内部孔结构并获得连通孔隙的方法,研究了水灰比、骨灰比和骨料粒径对试件透水系数、孔结构的影响,分析了有效孔隙率与总孔隙率之间的关系,并建立了透水混凝土透水系数的经验模型。结果表明:增加水灰比会降低试件的透水系数和连通孔隙率;随着骨灰比和骨料粒径的增加,试件的连通孔隙率和透水系数呈上升趋势。A method was introduced to characterize the internal pore structure of pervious concrete specimens and obtain connected pores using X-CT technology.The effects of water-cement ratio,aggregate-cement ratio,and aggregate particle size on the pervious coefficient and pore structure of specimens were studied.The relationship between effective porosity and total porosity was analyzed,and an empirical model for the pervious coefficient of pervious concrete was established.The results indicate that increasing the water-cement ratio will reduce the pervious coefficient and connectivity porosity of the specimens.As the aggregate-cement ratio and aggregate size increase,the connectivity porosity and pervious coefficient of the specimen show an upward trend.

关 键 词：透水混凝土 X-CT技术 透水系数 连通孔隙 性能 

分 类 号：TU528.7[建筑科学—建筑技术科学]