纳米压痕法表征水泥基材料徐变的研究进展  

Development of nanoindentation method for characterization of creep of cement-based materials

作　　者：李悦[1] 刘运泽 李洪文 LI Yue;LIU Yunze;LI Hongwen(Beijing Key Laboratory of Engineering Seismic and Structural Diagnosis and Treatment,Key Laboratory of Urban and Engineering Safety and Disaster Reduction,Ministry of Education,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室工程抗震与结构诊治北京市重点实验室,北京100124

出　　处：《混凝土》2022年第12期68-71,共4页Concrete

基　　金：北京市自然科学基金资助项目(8202005)。

摘　　要：水泥基材料的徐变是造成结构失效的重要因素。应用纳米压痕技术研究水泥基材料的徐变是一种新颖且有效的方法。综述了当前国内外基于纳米压痕技术表征水泥基材料徐变的研究现状,包括对微观物相、硬化浆体的直接压痕表征,对混凝土的多尺度徐变研究,以及应用纳米压痕分析温湿度场对水泥基材料徐变的影响。最后就当前研究现状提出了亟待解决的问题和对未来的展望。The creep of cement-based materials is an important factor causing structural failure.Using nanoindentation technology to study the creep of cement-based materials is a novel and effective method.It reviews the current research status of characterizing cement-based material creep based on nanoindentation technology at home and abroad,including direct indentation characterization of microscopic phases,hardened pastes,multi-scale creep research on concrete,and the application of nanoindentation to analyze the influence of temperature and humidity field on the creep of cement-based materials.Finally,it puts forward the urgent problems to be solved and the outlook for the future on the current research status.

关 键 词：纳米压痕 徐变 水泥基材料 多尺度 温湿度 

分 类 号：TU528.041[建筑科学—建筑技术科学]