摘   要：砖块作为再生混凝土粗骨料的成份之一，其含量高低可显著影响混凝土拌合物的工作性能。为此，通过测定砖块孔隙特征、不同砖块含量的水泥浆体流变参数以及不同水灰比的水泥浆体中砖块的吸、放水行为，掌握砖块的影响规律。结果表明,砖块特有的孔结构导致其对水泥颗粒吸附量可忽略不计，仅可能与水发生交换行为。在不同水灰比的浆体中，砖块自身含水率将显著影响其吸、放水行为。当浆体水灰比为0.3～0.5时，砖块的平衡含水率约为9％～17％，且浆体水灰比越高，则砖块平衡含水率越高。预示着当配制低强度等级混凝土时，可以提前对再生骨料进行饱水处理。砖块掺量为10％以下时，砖块饱水后掺入水泥浆中不会对水泥浆体的流变性能产生显著影响。

Abstract: Brick is one of the coarse aggregate of recycled concrete; its content will probably effect the working performance of the concrete mixture. Therefore, the effect law can be known by the measure of brick pore feature, rheological parameters of cement pastes with different bricks content and the suction and drainage behavior of bricks in cement pastes with different water cement ratio. The results showed that, the unique pore structure of the brick leads to no adsorption of cement particles, which can only be exchanged with water. With different water cement ratio, the water content of the brick will significantly affect its suction and drainage behavior. When the water cement ratio is 0.3 to 0.5, the equilibrium moisture content of the bricks is 9% to 17%. The higher the water cement ratio, the higher equilibrium moisture content of bricks, which shows that, when prepare low strength concrete, pre-full-water treatment can be carried out on the recycled aggregate. When the content below 10%, bricks with full water have no effect on the mobility of the cement paste.