强化处理对再生粗骨料物理性能的影响  

Influence of strengthening treatment on physical properties of recycled coarse aggregate

作　　者：王雅思[1,2,3] 李润 朱晨航[1,3] 蓝铭荣 WANG Yasi;LI Run;ZHU Chenhang;LAN Mingrong(College of Engineering,Fujianjiangxia University,Fuzhou 350108,China;College of Civil Engineering,Fuzhou University,Fuzhou 350108,China;Coordinative Innovation Center for Environmentally Friendly and Energy Saving HPC of Fujian Province,Fuzhou 350108,China)

机构地区：[1]福建江夏学院工程学院,福建福州350108 [2]福州大学土木工程学院,福建福州350108 [3]福建省环保节能型高性能混凝土协同创新中心,福建福州350108

出　　处：《混凝土》2021年第2期82-85,共4页Concrete

基　　金：国家自然科学基金联合基金重点支持项目(U1605242);大学生创新创业训练计划项目(S201913763052,201913763159)。

摘　　要：在筛后重组法预处理再生粗骨料的基础上,分别以纳米SiO2改性法和CO2强化法对再生粗骨料进行强化处理,对比再生骨料强化前后物理性能并与天然骨料进行比较分析。试验结果表明:经筛后重组处理的骨料,吸水率和含泥量有明显降低;纳米SiO2改性法及CO2强化法可改善再生粗骨料性能。On the basis of the pretreatment of recycled coarse aggregate by the method of reorganization after sieving,nano-SiO2 modification method and CO2 strengthening method were used to strengthen the recycled coarse aggregate.Then the physical properties of recycled aggregate and enhanced recycled aggregate and natural aggregate were compared and analyzed.The results show that the water absorption and mud content of the recycled aggregate after reorganization decreased obviously.And nano-SiO2 modification and CO2 strengthening can improve the properties of recycled coarse aggregate.

关 键 词：再生粗骨料 筛后重组 纳米SiO_(2)改性 CO_(2)强化 

分 类 号：TU528.041[建筑科学—建筑技术科学]