再生混凝土抗冻融耐久性能改善措施研究现状分析  

Research Status Analysis of Resistance Improvement Measures of Frost⁃shaw Durability of Recycled Aggregate Concrete

作　　者：罗佳乐 马兵 李坤鹏 张峰宇 袁超 袁书成 LUO Jiale;MA Bing;LI Kunpeng;ZHANG Fengyu;YUAN Chao;YUAN Shucheng(College of Civil Engineering,Sichuan Agricultural University,Dujiangyan,Sichuan611830,China;China MCC5 Group Co.,Ltd.,Chengdu,Sichuan610107,China;Xinjiang Tajian 359 Construction Engineering Co.,Ltd.,Akesu,Xinjiang843000,China)

机构地区：[1]四川农业大学土木工程学院,四川都江堰611830 [2]中国五冶集团有限公司,四川成都610107 [3]新疆塔建三五九建工有限责任公司,新疆阿克苏843000

出　　处：《施工技术（中英文）》2024年第22期1-9,共9页Construction Technology

基　　金：国家自然科学基金面上项目(52278513);师市科技攻关计划(2023GJJ01)。

摘　　要：再生混凝土的实际工程应用受到各方面的考验,特别是三北地区的大部分建筑物受到冻融和硫酸盐侵蚀破坏,严重影响了再生混凝土结构的安全性和耐久性,缩短了再生混凝土的使用寿命。结合国内外抗冻耐久性研究现状,分别介绍再生混凝土在冻融和硫酸盐冻融循环条件下的力学性能破坏机理和影响因素,总结再生混凝土抗冻融耐久性的改善方法,最后对再生混凝土的研究方向提出建议,致力于再生混凝土在冻融地区的实际工程应用。Recycled concrete which is applied in practical engineering has been suffering much damage from all aspects.The buildings in the Three-North Regions are suffering from damage from freeze-thaw erosion and sulfate erosion,the safety and durability are seriously affected,and the service life is short.Combined with the research status of resistance of frost-shaw durability at home and abroad,the failure mechanism and influencing factors of mechanical properties of recycled concrete after freeze-thaw and sulfate freeze-thaw cycles are analyzed respectively,and the resistance improvement measures to frost-thaw durability of recycled concrete are summarized.Finally,suggestions on the research direction of recycled concrete are put forward,which aim at the practical engineering application of recycled aggregate concrete in freeze-thaw areas.

关 键 词：再生混凝土 破坏机理 冻融 耐久性 

分 类 号：TU528[建筑科学—建筑技术科学]