复合尾矿免烧结多孔砖的试验研究

The experimengtal study on the properties of multiporous brick with compound tailings

对20组复合尾矿多孔砖试件的外观尺寸、破坏过程、抗压强度等基本性能进行了试验研究。结果表明:PVC管的加入,可以控制裂缝的发展方向;尾矿矿渣的掺入可以提高多孔砖的抗压强度,且在取代率为25%、水灰比为0.31时达到强度最大值。因此,水灰比为0.31,矿渣取代率为25%时,多孔砖抗压强度达到29.56 MPa。

Study on the fundamental properties,such as external dimension,destructive process,compression stremgth,of 20 groups multi brick with compond tailings. Results show that： as PVC pupe is added,it can control the direction of the crack development; the mixing of tailing slag can enhance the compressive strength of the porous brick; as the rate of substitution is 25% and the ratio of water to ash is 0. 31,the miximum strength is reached. Therefore,when the rate of substitution is 25% and the ratio of water to ash is 0. 31,the compressive strength of the porous brick reaches 29. 56 MPa.