再生骨料混凝土结构构件研究进展(I)——短期力学性能

彭立港; 赵羽习

doi:10.3724/j.gyjzG24042605

再生骨料混凝土结构构件研究进展(I)——短期力学性能

doi: 10.3724/j.gyjzG24042605

彭立港,
赵羽习^,

浙江大学结构工程研究所, 杭州 310058

基金项目:

浙江省"万人计划"科技创新领军人才项目(2021R52035)。

详细信息

作者简介:
彭立港,博士研究生,主要从事低碳混凝土结构的研究。

通讯作者:
赵羽习,教授,主要从事混凝土结构耐久性和建筑固废循环利用的研究,yxzhao@zju.edu.cn。

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出版历程
- 收稿日期: 2024-04-26
- 网络出版日期: 2024-09-19

Research Progress on Recycled Aggregate Concrete Structural Components (I): Short-Term Mechanical Performance

PENG Ligang,
ZHAO Yuxi^,

Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China

摘要

摘要: 再生骨料混凝土结构的应用对推动建筑行业的绿色高质量发展具有举足轻重的现实价值,这一领域在过去的几十年间已引起了学术界与工程界的广泛关注。系统地梳理了钢筋-再生骨料混凝土黏结性能、再生骨料混凝土梁构件受弯和受剪性能、再生骨料混凝土柱构件受压和抗震性能等方面的研究进展,并总结了当前科学研究及标准制定过程中的不足之处。分析表明:尽管再生骨料混凝土结构构件的短期力学性能相较于普通混凝土结构构件有所削弱,但通过配合比及施工工艺优化等措施,其性能可接近甚至优于普通混凝土结构构件,基本符合混凝土结构设计的规范要求。然而,当前的再生骨料混凝土结构构件研究主要聚焦于纯废弃混凝土制成的再生混凝土骨料,对于砖混结构拆除固废的结构化利用稍显欠缺。除了短期力学性能,再生骨料混凝土结构构件长期服役性能的稳定性和可靠性亦不容忽视,相关研究亟待深入开展。复合胶凝材料体系有望进一步改善再生骨料混凝土的材料性能、经济性和可持续性,但现有研究多局限于材料层面,缺乏对复合胶凝材料-再生骨料混凝土结构的系统性研究。因此,未来应进一步拓展研究视野,深入评估再生骨料混凝土结构的综合性能,以推动其在建筑行业的广泛应用。
- 再生骨料混凝土 /
- 结构构件 /
- 短期力学性能 /
- 研究进展 /
- 研究展望
Abstract: The application of recycled aggregate concrete (RAC) structures holds pivotal practical value in driving the green and high-quality development of the construction industry, attracting widespread attention from academic and engineering communities over the past few decades. This paper systematically reviewed the research progress in the fields of steel bar-RAC bond strength, flexural and shear performance of RAC beam components, and compressive and seismic performance of RAC column components. It also summarized the shortcomings in current scientific research and standard-setting processes. The analysis results revealed that, despite the slightly weaker short-term mechanical performance of RAC structural components compared to natural aggregate concrete (NAC) structural components, their performance could be optimized through measures such as mix proportion design and construction methods, approaching or even exceeding the performance of NAC structural components and basically meeting the requirements of design standards for concrete structures. However, current research on RAC structural components mainly focuses on recycled concrete aggregates made from pure waste concrete, with a slight lack of attention on the structural utilization of solid waste from demolished brick-concrete structures. In addition to short-term mechanical performance, the stability and reliability of the long-term service performance of RAC structural components cannot be overlooked and urgently demand in-depth investigation. Furthermore, the composite cementitious material (CCM) system has the potential to further improve the material performance, economy, and sustainability of RAC. However, most existing research is limited to the material level of CCMs-RAC, lacking systematic studies on the short-term mechanical performance and long-term service performance of CCMs-RAC structures. Therefore, future research should further expand the scope, and deepen the comprehensive performance assessment of RAC structures to promote their widespread applications in the construction industry.
- recycled aggregate concrete /
- structural components /
- short-term mechanical performance /
- research progress /
- research prospect

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