废混凝土再生集料在高速公路改扩建中的工程应用  

Engineering application of recycled aggregate from waste concrete in highway reconstruction

作　　者：刘春 张荣利 周再恒 邓琪 段珍华 肖建庄[3] LIU Chun;ZHANG Rongli;ZHOU Zaiheng;DENG Qi;DUAN Zhenhua;XIAO Jianzhuang(Guangdong Highway Construction Co.,Ltd.,Guangzhou,Guangdong 510623,China;Guangshen Xintang Interchange Reconstruction Project Management Office,Guangzhou,Guangdong 510765,China;College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]广东省公路建设有限公司,广东广州510623 [2]广深新塘立交改造项目管理处,广东广州510765 [3]同济大学土木工程学院,上海200092

出　　处：《福州大学学报（自然科学版）》2023年第2期236-242,共7页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(52178244,52078358)。

摘　　要：研究评估废混凝土再生集料取代率对水稳级配碎石和水泥混凝土力学性能的影响规律,探索适用于高速公路改扩建工程要求的配合比,并通过工程实践进一步评估再生集料在高速公路改扩建工程中原位协同再生利用的可行性.结果表明:水稳级配碎石和水泥混凝土的力学性能均随着再生集料取代率的增大而降低,设计配合比经工程示范应用现场检测验证具有可行性.The effect of recycled aggregate replacement on the mechanical properties of water-stable graded crushed stone and concrete was evaluated,and the suitable mixture for the highway reconstruc­tion and expansion project was explored.Finally,the feasibility of in-situ collaborative application of recycled aggregate in the highway reconstruction and expansion project was further evaluated through engineering practice.The results show that the mechanical properties of water-stable graded gravel and concrete decrease with the increase of recycled aggregate replacement,and the designed mixture has been verified to be feasible by engineering demonstration and application.

关 键 词：废混凝土 再生集料 配合比设计 高速公路 

分 类 号：O626.21[理学—有机化学]