基于砂率的富含砖粒再生混凝土基本性能试验研究

Experimental Study on Basic Properties of Brick-rich Recycled Concrete Based on Sand Ratio

为探究富含砖粒再生混凝土阻尼性能、抗压及劈裂强度与砂率的关系,选用全再生富含砖粒粗骨料,以砂率为研究参数,设计制作砂率为25%~50%的6组不同配合比再生混凝土梁、抗压及劈裂试件。通过试验研究砂率对富含砖粒再生混凝土梁阻尼性能、抗压及劈裂强度的影响规律。研究结果显示,随砂率的增大,富含砖粒再生混凝土抗压及劈裂强度均减小,而阻尼比随砂率的增加先增大而后略有降低。

In order to explore the relationship between damping performance,compressive strength and splitting strength of brick-rich recycled concrete and sanding ratio,6 groups of regenerated concrete beams,compressive strength and splitting specimens with different mix ratios of 25%~50%were designed by selecting the whole regenerated coarse aggregate rich in brick particles and taking the sand rate as the research parameter.The effects of sand ratio on the damping performance,compression resistance and splitting strength of brick-rich recycled concrete beams were studied by experiments.The results show that with the increase of sand rate,the compressive strength and splitting strength of brick-rich recycled concrete decrease,while the damping ratio increases first and then decreases slightly with the increase of sand ratio.