纤维增强再生骨料混凝土研究现状分析
DOI:
https://doi.org/10.70693/cjst.v1i2.1097Keywords:
再生骨料混凝土；废弃纤维；力学性能；机理分析Abstract
再生骨料混凝土在资源节约与碳减排方面潜力巨大，但其固有性能缺陷限制了推广应用。纤维增强技术为提升再生骨料混凝土性能提供了有效途径。本文系统分析了再生骨料因表面残留砂浆导致的性能劣化特征，如强度降低、吸水率与孔隙率增高，并综述了聚丙烯纤维、聚乙烯醇纤维、玄武岩纤维及碳纤维等多种纤维对再生骨料混凝土抗压、劈裂抗拉、抗折强度及韧性等力学性能的改善作用与影响规律，同时揭示了纤维通过桥接裂纹、强化界面过渡区等微观机制提升性能的机理。研究指出，纤维掺量存在阈值效应，过量或分布不均可能产生负面影响。未来研究需深入探索不同纤维的协同效应、优化组合及其在严苛环境下的长期性能与耐久性，以推动纤维增强再生骨料混凝土的实际应用。
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