本文研究0～5mm矿山废石和天然砂不同掺加比例对混凝土性能的影响。试验结果表明,对于中低强度混凝土,0～5mm矿山废石的掺入可以改善混凝土的流动性和抗压强度;对于较高强度混凝土,由于胶凝材料数量较多,对骨料级配影响的主要因素转变为胶凝材料,0～5mm矿山废石在混凝土中胶凝材料少时的改善作用变为阻碍作用。 In this paper, 0 ~ 5mm mine waste rock and natural sand mixed with different proportions of concrete performance. The test results show that for middle and low strength concrete, the incorporation of 0 ~ 5mm mine waste rock can improve the fluidity and compressive strength of concrete; for higher strength concrete, because of the large amount of cementitious material, the impact on aggregate gradation Of the main factors into a cementitious material, 0 ~ 5mm mine waste rock cement in the concrete to improve the role of little time to become an impediment.