憎水剂对透水混凝土抗堵塞性能及透水性能的影响研究  

Effect of hydrophobic agent on clogging resistance and water permeability of pervious concrete

作　　者：李龙 宋千勇 周为 颜川奇 艾长发[3] LI Long;SONG Qianyong;ZHOU Wei;YAN Chuanqi;AI Changfa(CSCEC Southwest Consulting Co.Ltd.,Chengdu 610042,China;Chengdu Metro Operation Co.Ltd.,Chengdu 610000,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]中建西南咨询顾问有限公司,四川成都610042 [2]成都地铁运营有限公司,四川成都610000 [3]西南交通大学土木工程学院,四川成都610031

出　　处：《新型建筑材料》2024年第2期11-16,共6页New Building Materials

基　　金：国家自然科学基金项目(52278462,52009353);四川省科技计划项目(2021JDTD0023,2022JDTD0015);中建西南咨询顾问有限公司重点课题(ZJZX-2022-008)。

摘　　要：为探究憎水剂SHP60对透水混凝土抗堵塞性能的影响及作用机理,采用水滴润湿边角试验观测SHP60对材料憎水性影响;通过SEM观察冲水前后试件的孔隙及颗粒形状变化;研究了SHP60掺量对透水混凝土初始孔隙率及使用过程中抗堵塞性能的影响,优选最佳SHP60掺量。结果表明:SHP60使材料水滴润湿边角增大2倍左右,使材料具有憎水性;SHP60对透水混凝土抗堵塞性能由对初始透水能力的削弱和对使用过程中透水能力的增强耦合。优先考虑透水性能的提高,其次考虑抗压强度条件下,SHP60最佳掺量为透水混凝土配合比干料质量的0.35%。In order to explore the influence and mechanism of the hydrophobic agent SHP60 on the anti-clogging performance of permeable concrete,the water droplet wetting angle test was used to observe the effect of SHP60 on the hydrophobicity of the material.The SEM experiment was used to observe the pore and particle shape changes of the specimen before and after flushing,and studied the effect of SHP60 content on the initial porosity and clogging resistance performance of permeable concrete during use,and to optimize the best SHP60 content.The results are as follows:SHP60 increases the wetting angle of the material by about2 times,making the hydrophilic material become hydrophobic.The anti-clogging performance of permeable concrete is coupled by weakening the initial permeability and enhancing the permeability during use.When prioritizing the improvement of permeability and then considering the resistance to compressive strength,the optimal recommended amount of SHP60 is 0.35% of the dry dosage of the permeable concrete mix ratio.

关 键 词：海绵城市 憎水剂SHP60 透水混凝土 抗堵塞性能 最佳推荐量 

分 类 号：TU528.2[建筑科学—建筑技术科学]