机制砂特性及其对混凝土性能影响的研究进展  

Research Progress on Characteristics of Manufactured Sand and Its Influence on Concrete Performance

作　　者：朱洪洲[1,2] 杜俊池 陈祥 杨耸 谭祺琦 ZHU Hongzhou;DU Junchi;CHEN Xiang;YANG Song;TAN Qiqi(National and Local Joint Engineering Research Center of Transportation and Civil Engineering Materials,Chongqing Jiaotong University,Chongqing 400074,China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学交通土建工程材料国家地方联合工程研究中心,重庆400074 [2]重庆交通大学土木工程学院,重庆400074

出　　处：《硅酸盐通报》2024年第11期3911-3922,共12页Bulletin of the Chinese Ceramic Society

基　　金：重庆市研究生联合培养基地建设项目(JDLHPYJD2020014);重庆市自然科学基金创新发展联合基金项目(CSTB2022NSCQ-LZX0063)。

摘　　要：随着天然砂开采的受限,机制砂的使用成为必然趋势。机制砂与天然砂的成砂过程差别较大,导致二者性能有着显著差异,这些差异影响了机制砂混凝土的性能。为了推进机制砂的应用,使制备的机制砂混凝土工作性能和力学性能满足应用要求,本文从机制砂的制备方法、颗粒特性及混凝土配合比对混凝土性能的影响展开分析,系统地总结了机制砂母岩岩性、石粉含量、颗粒形貌、级配以及混凝土配合比等对机制砂混凝土性能的影响,提出了现有研究的局限性以及亟待解决的问题,为后续研究提供参考。With the restriction on natural sand mining,the use of manufactured sand has become an inevitable trend.Due to the significant differences in the formation processes of manufactured sand and natural sand,there are notable differences in their properties,which also affect the performance of manufactured sand concrete.In order to promote the application of manufactured sand and ensure that the workability and mechanical properties of manufactured sand concrete meet the required standards,this paper analyzes the influences of preparation method and particle characteristics of manufactured sand and proportion of concrete on the performance of concrete.The influences of manufactured sand parent rock lithology,stone powder content,particle morphology,gradation,and proportion of concrete on manufactured sand concrete are systematically summarized.Additionally,the limitations of existing research and the problems that need to be addressed are discussed to provide a reference for future research.

关 键 词：机制砂 石粉 岩性 颗粒形貌 级配 配合比 

分 类 号：TU528[建筑科学—建筑技术科学]