通过对10根不同废弃骨料掺入百分比的再生混凝土梁进行结构构件的基本研究,了解废弃混凝土掺入量对梁的受弯承载力、变形性能等基本性能的影响。试验结果表明:再生混凝土梁与普通混凝土梁一样,其受弯过程中都要经历弹性、带裂缝工作、钢筋屈服和构件破坏三个阶段。在每级荷载作用下的跨中挠度变化与普通混凝土梁相似,废弃骨料掺入百分比对于再生混凝土梁的受弯承载力和变形性能影响不大。 The basic structural components of recycled concrete beams with 10 different types of waste aggregates were studied. The effects of the amount of waste concrete on the basic properties such as flexural capacity and deformation performance of the beams were investigated. Experimental results show that recycled concrete beams, like ordinary concrete beams, undergo three stages of elasticity, fracture work, steel yielding and component failure during bending. The change of mid-span deflection under each load is similar to that of ordinary concrete beams. The percentage of waste aggregate incorporation has little effect on the flexural capacity and deformation performance of recycled concrete beams.