基于电阻抗法的混凝土基层含水率检测方法研究  

Study on concrete moisture content detection method based on electrical impedance method

作　　者：乔凯 戈兵 宋莹楠 张继仁 边学俊 QIAO Kai;GE Bing;SONG Yingnan;ZHANG Jiren;BIAN Xuejun(China Academy of Building Research,Beijing 100013,China;National Engineering Research Center of Building Technology,Beijing 100013,China;CABR Testing Center Co.Ltd.,Beijing 101200,China)

机构地区：[1]中国建筑科学研究院有限公司,北京100013 [2]国家建筑工程技术研究中心,北京100013 [3]建研院检测中心有限公司,北京101200

出　　处：《新型建筑材料》2025年第1期109-113,共5页New Building Materials

基　　金：国家重点研发计划资助项目(2022YFC3801600);中国建筑科学研究院有限公司青年科研基金资助项目(2024-0110470D06-001)。

摘　　要：混凝土基层含水率对混凝土的结构、性能和施工质量有重大影响,但其无损检测技术受精度限制,不能满足实际需要。分别采用烘干法和电阻抗法(无损检测技术)测试不同厚度混凝土试板的含水率,通过比较两者的测试结果,分析电阻抗法产生误差的原因,并提出了电阻抗法含水率的校准公式,经验证,其相关系数达到0.99,说明校准后的电阻抗法无损检测技术能准确测试混凝土基层含水率,有助于推动工程现场混凝土基层含水率无损快速检测技术的发展。Concrete moisture content has a great impact on the structure,performance and construction quality of concrete,but its non-destructive testing technology is limited by accuracy,which cannot meet the actual needs.By comparing the difference between the moisture content results measured by the electrical impedance method(non-destructive testing technology)and the drying method,the reasons for the test results error of the electrical impedance method are analyzed.The calibration formula for the moisture content of the electrical impedance method is proposed,and the correlation coefficient is more than 0.99,which indicates that the calibrated electrical impedance non-destructive testing technology can achieve the accurate test of concrete moisture content.The results obtained in this paper are conducive to promoting the development of non-destructive rapid detection technology of concrete moisture content at the engineering site.

关 键 词：混凝土基层含水率 电阻抗法 烘干法 现场无损检测 

分 类 号：TU528[建筑科学—建筑技术科学]