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材料导报  2025, Vol. 39 Issue (24): 24110107-7    https://doi.org/10.11896/cldb.24110107
  无机非金属及其复合材料 |
水热处理废弃咖啡渣对混凝土性能的影响及其机理研究
邵杰1,2, 陈筝1,*, 刘舒介1, 罗淑见1
1 西安建筑科技大学材料科学与工程学院,西安 710055
2 华南理工大学土木与交通学院,广州 510640
Study on Influence of Hydrothermally Treated Spent Coffee Grounds on Performance of Concrete and Its Mechanism
SHAO Jie1,2, CHEN Zheng1,*, LIU Shujie1, LUO Shujian1
1 School of Materials Science and Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
2 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China
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摘要 针对废弃咖啡渣(SCG)回收热解处理能耗高与工艺复杂等问题,选择低温水热处理SCG,制备水热咖啡渣生物炭(SCG-HTC),并将其应用于混凝土中。通过研究水热处理对SCG-HTC特性以及混凝土性能的影响,揭示SCG-HTC的影响机理。结果表明:水热处理能够改变SCG颗粒形貌,丰富孔隙结构,对水泥水化无阻碍。与SCG混凝土相比,SCG-HTC混凝土的工作、力学与保温隔热性能改善更加明显。综合SCG-HTC混凝土的工作、力学以及保温隔热性能,建议SCG-HTC在混凝土中的最优掺量为取代10%(体积分数,如无特殊说明,下同)的砂。
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邵杰
陈筝
刘舒介
罗淑见
关键词:  废弃咖啡渣  力学性能  微观结构  保温隔热性能  改性机理    
Abstract: Aiming at the problems of high energy consumption and complex process of spent coffee grounds (SCG) recycling and pyrolysis, selected to prepare spent coffee grounds hydrothermal carbon (SCG-HTC) was prepared through low-temperature hydrothermal treatment of SCG, and was applied to concrete. The effect of SCG-HTC on the performance of concrete was revealed by studying the effect of hydrothermal treatment on the properties of SCG-HTC. The results showed that hydrothermal treatment can change the morphology of SCG particles, enrich the pore structure, and have no hindrance to cement hydration. Compared with the performance changes of SCG concrete, the working, mechanical and thermal insulation properties of SCG-HTC concrete are improved more obviously. Considering the working, mechanical and thermal insulation performance of SCG-HTC concrete, the suggested optimal content of SCG-HTC in concrete is 10vol%.
Key words:  spent coffee grounds    mechanical performance    microstructure    thermal insulation performance    modification mechanism
出版日期:  2025-12-25      发布日期:  2025-12-17
ZTFLH:  TU502  
基金资助: 陕西省自然科学基金(2022JM-293);中央大学基金项目(CHD,300102213511)
通讯作者:  *陈筝,博士,西安建筑科技大学材料科学与工程学院副教授、硕士研究生导师。目前主要从事道路建筑材料等方面的研究工作。chenz@xauat.edu.cn   
作者简介:  邵杰,西安建筑科技大学材料科学与工程学院硕士研究生。目前主要研究领域为道路建筑材料的开发。
引用本文:    
邵杰, 陈筝, 刘舒介, 罗淑见. 水热处理废弃咖啡渣对混凝土性能的影响及其机理研究[J]. 材料导报, 2025, 39(24): 24110107-7.
SHAO Jie, CHEN Zheng, LIU Shujie, LUO Shujian. Study on Influence of Hydrothermally Treated Spent Coffee Grounds on Performance of Concrete and Its Mechanism. Materials Reports, 2025, 39(24): 24110107-7.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.24110107  或          https://www.mater-rep.com/CN/Y2025/V39/I24/24110107
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