碳化作用对再生骨料混凝土的力学性能影响分析  

Analysis of the Influence of Carbonization on the Mechanical Properties of Recycled Aggregate Concrete

作　　者：徐波阳 吴萌萌 XU Boyang;WU Mengmeng(The Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804,China;Key Laboratory of Infrastructure Durability and Operation Safety in Airfield of CAAC,Tongji University,Shanghai 201804,China;Nezha Smart Port&Shipping Technology(Shanghai)Co.,Ltd.,Shanghai 200082,China)

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]同济大学民航飞行区设施耐久与运行安全重点实验室,上海201804 [3]哪咤港航智慧科技有限公司,上海200082

出　　处：《交通科技》2023年第6期144-147,共4页Transportation Science & Technology

摘　　要：再生骨料混凝土用于基建工程是实现可持续发展的重要举措,而经由碳化作用处理的再生骨料混凝土能够去除其固有的一些缺陷,具有广阔的研究前景。文中针对碳化作用对再生骨料的力学性能进行研究,选取抗压强度和抗折强度作为力学性能评价指标,通过室内试验研究不同砂浆含量下碳化作用对于再生骨料混凝土的力学性能的影响效果,并分析试验规律。结果表明,经过CO_(2)碳化强化后,再生混凝土的抗压强度提升11.54%~15.56%,抗折强度提升1.21%~3.28%,碳化再生混凝土的力学性能明显高于未碳化的再生混凝土。The use of recycled aggregate concrete in infrastructure engineering is an important measure to achieve sustainable development,and the carbonated recycled aggregate concrete can remove some of its inherent defects,which has broad research prospects.The mechanical properties of recycled aggregate under the influence of carbonization is researched,by selecting compressive strength and flexural strength as mechanical performance evaluation indicators.Through indoor experiments,the effect of carbonization on the mechanical properties of recycled aggregate concrete under different mortar contents is studied,and the experimental rules are analyzed.The research results show that after CO_(2) carbonation strengthening,the compressive strength of recycled concrete increases by 11.54%~15.56%,and the flexural strength increases by 1.21%~3.28%.The mechanical properties of carbonated recycled concrete are significantly higher than those of non-carbonated recycled concrete.

关 键 词：碳化 再生骨料混凝土 抗压强度 抗折强度 

分 类 号：U444[建筑科学—桥梁与隧道工程] TU502.6[交通运输工程—道路与铁道工程]