改性再生大骨料混凝土耐久性能研究  

Study on the Durability of Modified Recycled Big Aggregate Concrete

作　　者：黄卓杰 陈建国 陈德伟 吴光军 杜念 闫志勇 HUANG Zhuo-jie;CHEN Jian-guo;CHEN De-wei;WU Guang-jun;DU Nian;YAN Zhi-yong(Guangxi Hydraulic Research Institute,Guangxi Key Laboratory of Water Engineering Materials and Structures,Nanning 530023,China;Hohai University,Nanjing 210000,China;Guangxi Construction Engineering Group Haihe Water Conservancy Construction Co.,Ltd.,Nanning 530000,China)

机构地区：[1]广西壮族自治区水利科学研究院、广西水工程材料与结构重点实验室,广西南宁530023 [2]河海大学,江苏南京210000 [3]广西建工集团海河水利建设有限责任公司,广西南宁530000

出　　处：《混凝土与水泥制品》2021年第7期93-97,共5页China Concrete and Cement Products

基　　金：广西重点研发计划项目(桂科AB17292083、桂科AB18221093);广西十百千人才专项资金资助项目。

摘　　要：通过单掺、复掺无机材料和有机材料对再生大骨料进行改性处理,研究了改性再生大骨料混凝土(MAC)与天然骨料混凝土(NAC)、再生骨料混凝土(RAC)的耐久性能差异。结果表明:相同龄期下,NAC的抗渗性能、抗氯离子渗透性能及抗碳化性能均最好,MAC次之,RAC最差;随着龄期的延长,RAC碳化深度的增幅最大,MAC次之,NAC最小。The recycled big aggregate was modified through the single admixture and compound admixture of inorganic materials and organic materials,the difference in durability between modified recycled big aggregate concrete(MAC),natural aggregate concrete(NAC)and recycled aggregate concrete(RAC)was studied.The results show that at the same age,NAC has the best anti-permeability,anti-chloride ion permeability and anti-carbonization properties,followed by MAC,and RAC is the worst.With the extension of age,the increase in RAC carbonization depth is the largest,followed by MAC,and NAC is the smallest.

关 键 词：再生大骨料 混凝土 改性处理 耐久性能 

分 类 号：TU528[建筑科学—建筑技术科学]