混凝土在超低温环境下的研究进展  

RESEARCH PROGRESS OF CONCRETE IN ULTRA-LOW TEMPERATURE ENVIRONMENT

作　　者：邓玉姣 崔云鹏[1] 刘润清[1] 耿志晨 李浪 DENG Yujiao;CUI Yunpeng;LIU Runqing;GENG Zhichen;LI Lang(School of Materials Science and Engineering,Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,沈阳110159

出　　处：《低温建筑技术》2023年第1期28-31,47,共5页Low Temperature Architecture Technology

基　　金：国家自然科学基金项目“超低温环境下混凝土材料损伤机理及防护研究”(51972214);辽宁省教育厅基本科研项目“基于函数粒径重构的胶凝材料氯离子传输交互作用研究”(LJKQZ20222293);沈阳理工大学高层次人才科研支持计划。

摘　　要：超低温混凝土由于服役环境温度极低,导致各方面性能差异化较大。超低温混凝土的性能研究对在相应工程上应用具有重要意义。文中通过对国内外文献数据的整理分析,研究得出超低温混凝土的力学性能与含水率、强度及温度有关。超低温混凝土破坏的主要原因之一是结构内部毛细孔中液态水随温度变化反复冻融的结果。为超低温环境下混凝土的性能变化研究提供参考。The properties of concrete vary greatly in the extremely low temperature of service environment,the performance of which is of great significance to its application in corresponding projects.Based on the analysis of domestic and foreign publications,this paper studies the mechanical properties of ultralow temperature concrete are related to moisture content,strength and temperature.It is concluded that the mechanical properties of ultralow temperature concrete are related to moisture content,strength,and temperature.One of the main reasons for the destruction of ultralow temperature concrete is the result of repeated freezing and thawing of liquid water in the pores of the structure with temperature changes.It may provide the reference for the research of concrete performance change under ultra-low temperature environment.

关 键 词：超低温混凝土 力学性能 温度场 损伤机理 

分 类 号：TU528[建筑科学—建筑技术科学]