精细化拆除产生的旧混凝土构件经适当处理后得再生部件，若能在新的结构构件中直接对其进行利用，无疑具有显著的节材节能降碳效应，但此时新构件的相关性能尚需通过系统研究予以定量揭示和把握。作为初步探索，该文对再生部件混凝土预制楼板（即内含有再生部件的预制楼板）的受弯性能进行研究，分别开展了该类预制楼板的正弯矩和负弯矩受弯试验，考察了再生部件的表面处理方式、新旧混凝土强度差等因素对该类预制楼板正弯矩受弯性能的影响，以及局部新增连接用钢筋的构造方式对该类预制楼板负弯矩受弯性能的影响，提出了该类预制楼板的受弯承载力计算方法。结果表明：该类预制楼板的正弯矩受弯承载力显著高于整浇对比楼板；再生部件的不同表面处理方式对该类预制楼板的正弯矩受弯承载力总体上影响有限；在再生部件端部局部新增连接用钢筋可明显提升该类预制楼板的负弯矩受弯承载力，实际工程中，建议优先采用直接布设搭接钢筋的构造做法；所提受弯承载力计算方法的计算结果总体上偏保守。

The direct utilization of recycled components derived from meticulously demolished old concrete members in new structural elements holds significant potential for saving materials, reducing energy consumption, and lowering carbon emissions. However, the performance of such new members requires systematic investigation for quantitative understanding. As a preliminary exploration, this paper investigated the flexural performance of precast concrete floor slabs containing recycled components. Flexural experiments were conducted under both sagging and hogging moments. The influences of factors such as the surface treatment methods of recycled components and the strength difference between new and old concrete on the sagging moment flexural performance was examined. Furthermore, the effect of the configuration of locally added connecting reinforcement on the hogging moment fle-xural performance was studied. A calculation methods for the flexural capacity of these slabs was proposed. The results show that: (1) the sagging moment flexural capacity of the recycled-component slabs is significantly higher than that of monolithic cast reference slabs; (2) Different surface treatment methods for the recycled components generally had a limited impact on the sagging moment capacity; (3) the addition of local connecting reinforcement at the ends of the recycled components notably enhanced the hogging moment flexural capacity; for practical enginee-ring, the configuration using directly laid lapped reinforcement is recommended. The results of the proposed me-thods for calculating flexural bearing capacities are generally conservative.