建筑废料掺铁尾矿再生混凝土强度研究

Study on the Strength of Recycled Concrete with Building Waste Mixed with Iron Tailings

采用建筑垃圾经破碎后得到的再生粗骨料代替天然粗骨料,铁尾矿代替天然砂作为细骨料,通过控制掺入量,经坍落度试验及立方体抗压试验得到再生粗骨料及铁尾矿对混凝土强度的影响。结果表明:仅采用再生粗骨料代替天然粗骨料时,附加水率为30%时再生混凝土强度最高;当再生混凝土中掺加铁尾矿时,附加水量0%,铁尾矿掺量为60%时强度较高。

The recycled coarse aggregate obtained from the crushing of construction waste is used to replace the natural coarse aggregate,and the iron tailing is used to replace the natural sand as the fine aggregate.The influence of the recycled coarse aggregate and iron tailing on the strength of concrete is obtained through the slump test and cube compression test by controlling the mixing amount.The results show that the strength of recycled concrete is the highest when the ratio of additional water is 30%,and the strength is higher when the ratio of additional water is 0%and the ratio of iron tailings is 60%.