| 摘要: |
| 评估了再生粗集料（RCA）取代率对再生混凝土（RAC）力学性能和冲击磨耗性能的影响规律，建立了RAC的冲击磨耗时变模型，并在此基础上开展了基于纤维和再生橡胶颗粒复掺的RAC冲击磨耗性能调控方法研究.结果表明：RAC的冲击磨耗性能随RCA取代率增大呈下降趋势，并与其各项力学性能指标之间具有较高的相关性；纤维和再生橡胶颗粒的掺入能够改善RAC的冲击磨耗性能. |
| 关键词: 再生混凝土 冲击磨耗性能 橡胶颗粒 纤维 时变特征 |
| DOI：10.3969/j.issn.1007-9629.2022.11.005 |
| 分类号:TU528.59 |
| 基金项目:国家自然科学基金资助项目（52178244，52078358） |
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| Abrasion Resistance of Recycled Aggregate Concrete and Its Control Method |
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DUAN Zhenhua1, DENG Qi1, XIAO Jianzhuang1, LIU Chun2,3
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1.College of Civil Engineering， Tongji University， Shanghai 200092， China;2.Guangdong Highway Construction Co.， Ltd.， Guangzhou 510623， China;3.Guangshen Xintang Interchange Reconstruction Project Management Office， Guangzhou 510765， China
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| Abstract: |
| Influence of the replacement rate of recycled coarse aggregate （RCA） on the mechanical properties and abrasion resistance of recycled aggregate concrete （RAC） was invesgated， and the corresponding time-varying model of abrasion rate was established. On this basis， the research on the adjustment and control method of the abrasion resistance of RAC based on the combination of fiber and recycled rubber particles was carried out. The results show that the abrasion resistance of RAC reduces with the increase of RCA replacement ratio， and has a high correlation with its corresponding mechanical properties. The addition of the fiber and RCA can improve the abrasion resistance of RAC. |
| Key words: recycled aggregate concrete abrasion resistance rubber particle fiber time-varying characteristic |
