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Method for improving compressive strength of full-tailing cemented filling body by replacing part of cement with straw ash
The invention discloses a method for improving the compressive strength of a full-tailing cemented filling body by replacing part of cement with straw ash, and belongs to the field of metal mine filling, and the adding amount of the straw ash replacing the cement in the method for improving the compressive strength of the full-tailing cemented filling body is 2.5%-10.0% of the mass of the replacedcement. According to the method, the compressive strength of the full-tailing cemented filling body is studied, renewable resource straw ash which is low in cost and wide in source is selected as anadditive for improving the compressive strength of the filling body, a uniaxial compressive strength test is conducted, and finally the method capable of remarkably improving the compressive strengthof the filling body is obtained. And the increase rate of the compressive strength of the full-tailing cemented filling body with the straw ash replacing part of cement relative to the compressive strength of the filling body added with the straw ash is calculated. According to the method, the straw ash is added to replace part of cement to prepare the full-tailing cemented filling body, the compressive strength of the filling body is far higher than that of a filling body without the straw ash, the cement consumption is reduced, and the filling cost can be remarkably reduced.
本发明公开了一种利用稻草灰替代部分水泥提高全尾砂胶结充填体抗压强度的方法，属于金属矿山充填领域，所述提高全尾砂充填体抗压强度方法中稻草灰替代水泥的添加量为：替代水泥质量的2.5％～10.0％。本发明通过对全尾砂胶结充填体抗压强度研究，选择成本低廉、来源广泛的可再生资源稻草灰作为改善充填体抗压强度的外加剂，并进行了单轴抗压强度测试，最终得出可能够显著改善充填体抗压强度的方法，并计算了稻草灰替代部分水泥的全尾砂胶结充填体的抗压强度相对与添加稻草灰的充填体抗压强度的增加率。该方法通过添加稻草灰替代部分水泥来制备全尾砂胶结充填体，其抗压强度远高于未添加稻草灰的充填体抗压强度，且水泥用量减少，能够显著降低充填成本。
Method for improving compressive strength of full-tailing cemented filling body by replacing part of cement with straw ash
The invention discloses a method for improving the compressive strength of a full-tailing cemented filling body by replacing part of cement with straw ash, and belongs to the field of metal mine filling, and the adding amount of the straw ash replacing the cement in the method for improving the compressive strength of the full-tailing cemented filling body is 2.5%-10.0% of the mass of the replacedcement. According to the method, the compressive strength of the full-tailing cemented filling body is studied, renewable resource straw ash which is low in cost and wide in source is selected as anadditive for improving the compressive strength of the filling body, a uniaxial compressive strength test is conducted, and finally the method capable of remarkably improving the compressive strengthof the filling body is obtained. And the increase rate of the compressive strength of the full-tailing cemented filling body with the straw ash replacing part of cement relative to the compressive strength of the filling body added with the straw ash is calculated. According to the method, the straw ash is added to replace part of cement to prepare the full-tailing cemented filling body, the compressive strength of the filling body is far higher than that of a filling body without the straw ash, the cement consumption is reduced, and the filling cost can be remarkably reduced.
本发明公开了一种利用稻草灰替代部分水泥提高全尾砂胶结充填体抗压强度的方法，属于金属矿山充填领域，所述提高全尾砂充填体抗压强度方法中稻草灰替代水泥的添加量为：替代水泥质量的2.5％～10.0％。本发明通过对全尾砂胶结充填体抗压强度研究，选择成本低廉、来源广泛的可再生资源稻草灰作为改善充填体抗压强度的外加剂，并进行了单轴抗压强度测试，最终得出可能够显著改善充填体抗压强度的方法，并计算了稻草灰替代部分水泥的全尾砂胶结充填体的抗压强度相对与添加稻草灰的充填体抗压强度的增加率。该方法通过添加稻草灰替代部分水泥来制备全尾砂胶结充填体，其抗压强度远高于未添加稻草灰的充填体抗压强度，且水泥用量减少，能够显著降低充填成本。
Method for improving compressive strength of full-tailing cemented filling body by replacing part of cement with straw ash
一种利用稻草灰替代部分水泥提高全尾砂胶结充填体抗压强度的方法
WANG SHI (author) / SONG XUEPENG (author) / WEI MEILIANG (author) / LIU WU (author) / WANG XIAOJUN (author) / HU KAIJIAN (author)
2021-01-29
Patent
Electronic Resource
Chinese
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