高海拔寒冷地区混凝土抗冻耐久性研究综述  

Review on Frost Resistance Durability of Concrete in High Altitude and Cold Regions

作　　者：贾泽旭 邓祥辉[1] 王睿[1] 赵帮轩[2] 邓丽华 吴起源 JIA Zexu;DENG Xianghui;WANG Rui;ZHAO Bangxuan;WU Qiyuan(School of Civil and Architecture Engineering,Xi’an Technological University,Xi’an 710021,China;China Railway 18th Bureau Group Fifth Engineering Co.,Ltd.,Tianjin 300459,China)

机构地区：[1]西安工业大学建筑工程学院,西安710021 [2]中铁十八局集团第五工程有限公司,天津300459

出　　处：《西安工业大学学报》2024年第5期584-597,共14页Journal of Xi’an Technological University

基　　金：陕西省重点研发计划项目(2023-YBSF-368)。

摘　　要：高海拔寒冷地区具有海拔高、气温低、昼夜温差大等特点,严重威胁混凝土结构安全和正常使用年限。因此,提高混凝土结构的抗冻耐久性、保证结构安全和可靠性是研究高海拔寒冷地区混凝土抗冻耐久性能、施工技术以及评价方法的关键。综合分析了水胶比、外加剂、掺合料对高海拔寒冷地区混凝土宏观力学的影响,混凝土内部微观结构测试方法取得的成就和存在的不足,混凝土微观结构与宏观力学之间的关系,以及高海拔寒冷地区混凝土冻融损伤模型以及数值模拟的研究进展。通过上述分析和总结,以期进一步完善高海拔寒冷地区混凝土抗冻耐久性的理论体系、试验和评估方法,为高海拔寒冷地区混凝土的理论研究和工程应用提供理论基础。High altitude and cold regions are characterized by high altitude,low temperature,and large difference in temperature between day and night,which severely threaten the structural safety and normal service life of concrete.Therefore,improving the frost resistance of and ensuring the safety and reliability of concrete structures are the key to studying the frost resistance durability,construction technology,and evaluation methods of concrete in high altitude and cold regions.Comprehensive analyses are made in this paper of the influence of water cement ratio,additives and admixtures on the macroscopic mechanics of concrete in high altitude and cold regions,the achievements and deficiencies in the methods for testing the internal microstructure of concrete,the relationship between microstructure and macroscopic mechanics of concrete,and the progress in the freezing and thawing damage models of concrete and their numerical simulation.The above analysis and summary are intended to further improve the theoretical system,experimental and evaluation methods for frost resistance durability of concrete in high altitude and cold regions,providing a theoretical basis for the theoretical research on and engineering applications of concrete in high altitude and cold regions.

关 键 词：高海拔寒冷地区 混凝土 抗冻耐久性 微观结构 冻融损伤模型 数值模拟 

分 类 号：TU528[建筑科学—建筑技术科学]