混凝土结构自防水厚度试验方法研究  

Study on test method of self-waterproof thickness of concrete structures

作　　者：黄刚 王庆轩 王琼琼 张晓奇 崔静恩 汪登 张文杰 霍亮 HUANG Gang;WANG Qingxuan;WANG Qiongqiong;ZHANG Xiaoqi;CUI Jing’en;WANG Deng;ZHANG Wenjie;HUO Liang(China Construction Industrial Engineering and Technology Research Academy Co.,Ltd.,Beijing 101300,China;Tsinghua University,Beijing 100091,China;China State Construction Technical Center,Beijing 101300,China)

机构地区：[1]中建工程产业技术研究院有限公司,北京101300 [2]清华大学,北京100091 [3]中国建筑集团有限公司技术中心,北京101300

出　　处：《混凝土与水泥制品》2024年第11期85-89,共5页China Concrete and Cement Products

基　　金：中国建筑高性能工程结构试验分析与安全控制重点实验室项目(CSCEC-PT-001);建筑房屋防水工程关键技术研究项目(CSCEC-2020-Z-7);山东省重点研发计划项目(2021CXGC011203)。

摘　　要：为了探究建筑用混凝土结构自防水厚度,通过改进密封技术和抗渗方案,提出了试验室条件下混凝土结构自防水厚度的试验方法,并采用该方法测试了C30、C40、C50混凝土结构自防水厚度。结果表明:环氧树脂-橡胶套组合密封技术可避免抗渗试件侧漏,减小数据离散性,提高试验成功率及测试效率;在渗水高度法的基础上,以工程需求的抗渗压力保压到渗透平衡时间阈值,可准确快速地测得混凝土的最大渗透厚度,即混凝土结构自防水厚度;在P12抗渗等级要求下,C30、C40、C50混凝土结构自防水厚度分别不超过36.8、32.7、29.1 mm。In order to explore the self-waterproofing thickness of concrete structures used in buildings,a testing method for the self-waterproofing thickness of concrete structures under laboratory conditions was proposed by improving sealing technology and impermeability schemes.This method was used to test the self-waterproofing thickness of C30,C40,and C50 concrete structures.The results show that the combination sealing technology of epoxy resin and rubber sleeve can avoid side leakage of impermeable specimens,reduce data discreteness,and improve the success rate and efficiency of the test.On the basis of the water permeability height method,the maximum permeability thickness of concrete can be accurately and quickly measured by keeping the impermeable pressure required by the engineering to the threshold of permeation equilibrium time.Under the requirement of P12 impermeability level,the self-waterproofing thickness of C30,C40,and C50 concrete structures not exceeds 36.8 mm,32.7 mm,and 29.1 mm,respectively.

关 键 词：混凝土结构 自防水厚度 组合密封技术 渗透平衡时间阈值 最大渗透厚度 

分 类 号：TU528.01[建筑科学—建筑技术科学]