水泥基材料的拉伸徐变行为综述  

Overview of tensile creep behavior of cementitious materials

作　　者：杨果 赵海涛[1] 胡张莉 徐怡[3] 相宇 程子豪 何锦涛 曹乾 Yang Guo;Zhao Haitao;Hu Zhangli;Xu Yi;Xiang Yu;Cheng Zihao;He Jintao;Cao Qian(College of Civil and Transportation Engineering,Hohai University,Nanjing 210024,China;School of Materials Science and Engineering,Southeast University,Nanjing 211189,China;College of Mechanics and Materials,Hohai University,Nanjing 210024,China)

机构地区：[1]河海大学土木与交通学院,南京210024 [2]东南大学材料科学与工程学院,南京211189 [3]河海大学力学与材料学院,南京210024

出　　处：《东南大学学报（自然科学版）》2024年第3期684-696,共13页Journal of Southeast University：Natural Science Edition

基　　金：国家杰出青年科学基金资助项目(52325803);国家自然科学基金区域创新发展联合基金重点资助项目(U22A20229)。

摘　　要：为了理清水泥基材料拉伸徐变的影响因素和复杂机理,从拉伸徐变测试方法、内部组分影响、外部加载条件、拉伸徐变机理等方面对拉伸徐变行为进行综述.总结了拉伸徐变测试的困难性和新测试方法的优缺点;分析了内部组分的种类和掺量对拉伸徐变的影响,包括对水化和强度起主要作用的基体组分,以及影响细观界面滑移的骨料和纤维;基于温度-湿度-水化-滑移耦合作用的研究思路,分析了不同温湿度、加载龄期和应力水平下的拉伸徐变变化规律及影响机制;将拉伸徐变相关徐变机理进行梳理,提出了多场耦合-多尺度滑移的徐变机理分析模型.To clarify the influencing factors and complex mechanisms of tensile creep in cementitious materials,a tensile creep behavior review was provided,covering aspects such as tensile creep testing methods,internal component influences,external loading conditions,and tensile creep mechanisms.The difficulties of tensile creep testing and the pros and cons of new testing methods were summarized.The influence of the types and dosages of internal components on tensile creep was analyzed,including the matrix components that play a major role in hydration and strength,as well as the aggregates and fibers that affect micro interface sliding.Based on the research approach of temperature-humidity-hydration-slip coupling,the variation patterns and influencing mechanisms of tensile creep under different temperature-humidity conditions,loading ages,and stress levels were analyzed.By organizing the relevant creep mechanisms of tensile creep,a creep mechanism analysis model based on multi-field coupling and multi-scale sliding was proposed.

关 键 词：拉伸徐变 水泥基材料 徐变机理 多尺度滑移 温度-湿度-水化-滑移耦合 

分 类 号：TU528.1[建筑科学—建筑技术科学]