材料组成对透水混凝土性能的影响研究  

Study on the influence of material composition on the properties of permeable concrete

作　　者：周大福 陈代果[1] 杨福俭 姚勇[1] 梅军[3] 汪雄杰 ZHOU Dafu;CHEN Daiguo;YANG Fujian;YAO Yong;MEI Jun;WANG Xiongjie(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,China;Science and Technology Engineering Co.,Ltd.,11th Design and Research Institute ofInformation Industry Electronics,Chengdu 610061,China;Chengdu Science and Technology Development Center,Chinese Academy of Science and Technology,Chengdu 610061,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]信息产业电子第十一设计研究院科技工程股份有限公司,四川成都610061 [3]中国工程物理研究院成都科学技术发展中心,四川成都610061

出　　处：《混凝土》2024年第8期120-124,共5页Concrete

基　　金：国家自然科学基金(12002293);四川省科技厅应用基础项目(2018JY0496);住建部科技计划项目(2018-K9-049,2018-K9-059)。

摘　　要：为了探究水灰比、PAN纤维、硅灰和黏结剂等对透水混凝土孔隙率、透水系数与抗压强度等性能的影响,设计四因素三水平的正交试验,以极差、方差法对孔隙率、透水系数、抗压强度进行了分析,得到了各性能指标的影响因素顺序与最佳组合。试验结果表明:水灰比对透水混凝土性能的影响程度最大,且试件组孔隙率、透水系数普遍较大,最大值分别为27.41%、18.89 mm/s,抗压强度最大为22.2 MPa;试件组透水混凝土的最佳组合水灰比0.31、PAN纤维掺量0.6%、硅灰掺量8%、黏结剂掺量2%~3%。抗压强度和透水系数均可通过3种模型函数(Balshin、Ryshkewitch、Hasselman)与孔隙率建立关系,且拟合效果较好,随着孔隙率增大,抗压强度呈下降趋势,透水系数呈上升趋势。In order to explore the effects of water-ash ratio,PAN fiber,silicone ash and binder on the properties of permeable concrete,permeability coefficient and compressive strength,the four-factor three-level orthogonal test was designed,and the porosity,permeability coefficient and compressive strength were analyzed by the method of extreme difference and variance,and the order and optimal combination of influencing factors of each performance index were obtained.The test results show that the water-ash ratio has the greatest influence on the performance of permeable concrete,and the porosity and permeability coefficient of the specimen group are generally large,the maximum values are 27.41%,18.89 mm/s,and the maximum compressive strength is 22.2 MPa.The best combination of permeable concrete in the specimen group is:water-ash ratio 0.31,PAN fiber dosage 0.6%,silica ash dosage 8%,binder dosage 2%~3%.Compressive strength and permeability coefficient can be established by Balshin,Ryshkewitch,Hasselman three model functions and porosity,and the fitting effect is better,with the increase of porosity,the compressive strength shows a downward trend,and the permeability coefficient shows an upward trend.

关 键 词：透水混凝土 材料组成 孔隙率 正交试验 

分 类 号：TU528.041[建筑科学—建筑技术科学]