再选尾矿砂砌块的配合比和强度试验研究
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摘要
为提高尾矿砂的综合利用率,以再选尾矿砂为主要原材料制作连锁砌块。通过试验的方法确定的砌块的配合比,使砌块得到最优的性能。当水泥掺量占再选尾矿砂质量10%时,砌块长期强度可到达M25的强度要求;当水泥掺量占再选尾矿砂质量5%时,砌块长期强度可到达M15的强度要求。试验结果表明,同配合比情况下再选尾矿砂代替机制尾矿砂制作的试件强度会下降30%左右。
In order to improve the comprehensive utilization ratio of tailings, chained blocks with reconcentration tailings as main materials are produced. Optimized mix ratio are determined through test to obtain optimum performance of reconcentration tailings block. The test results show that the long-term strength of the block met the strength requirement of M25 when the cement mixing amount is 10% of the tailings mass. The long-term strength of the block met the strength requirement of M15 when the cement mixing amount accounts for 5% of the reconcentration tailings mass. Meanwhile, the test results indicated that the strength of the block with recycled tailings was 30% lower than that of the machine-made tailings in the case of the same mix ratio.
In order to improve the comprehensive utilization ratio of tailings, chained blocks with reconcentration tailings as main materials are produced. Optimized mix ratio are determined through test to obtain optimum performance of reconcentration tailings block. The test results show that the long-term strength of the block met the strength requirement of M25 when the cement mixing amount is 10% of the tailings mass. The long-term strength of the block met the strength requirement of M15 when the cement mixing amount accounts for 5% of the reconcentration tailings mass. Meanwhile, the test results indicated that the strength of the block with recycled tailings was 30% lower than that of the machine-made tailings in the case of the same mix ratio.
引文
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