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Preparation method of high-durability iron tailing waste rock pervious concrete
The invention provides a preparation method of high-durability iron tailing waste rock pervious concrete, and belongs to the technical field of building materials. The method comprises the following steps: mixing and stirring iron tailing waste rocks and water, then adding a cementing material (cement, silica fume and fly ash), iron tailing sand and polypropylene fibers, stirring, then adding a mixed solution of water and an additive, stirring, loading into a concrete mold, and curing under standard curing conditions to prepare the pervious concrete. The concrete comprises the following components in percentage by mass: 55%-64% of iron tailing waste rock, 3%-6% of iron tailing sand, 20%-29% of cement, 1.5%-2.5% of silica fume, 5%-10% of fly ash, 5.5%-8.5% of water, 0.025%-0.030% of polypropylene fiber and 0.2%-1.0% of an additive. According to the method, the iron tailing waste rock and the iron tailing sand are used for replacing natural aggregate, so that the durability of the pervious concrete is improved while the high pervious rate and the high strength of the pervious concrete are ensured.
本发明提供一种高耐久性铁尾矿废石透水混凝土的制备方法，属于建筑材料技术领域。该方法将铁尾矿废石和水混合搅拌，然后加入胶凝材料(水泥、硅灰、粉煤灰)、铁尾矿砂和聚丙烯纤维，搅拌，再加入水与外加剂的混合溶液，搅拌后装入混凝土模具，在标准养护条件下养护，制备得到透水混凝土。按质量百分比，铁尾矿废石55％～64％，铁尾矿砂3％～6％，水泥20％～29％，硅灰1.5％～2.5％，粉煤灰5％～10％，水5.5％～8.5％，聚丙烯纤维0.025％～0.030％，外加剂0.2％～1.0％。该方法使用铁尾矿废石和铁尾矿砂替代天然骨料，在保证透水混凝土高透水率以及高强度的同时，还提高了透水混凝土的耐久性。
Preparation method of high-durability iron tailing waste rock pervious concrete
The invention provides a preparation method of high-durability iron tailing waste rock pervious concrete, and belongs to the technical field of building materials. The method comprises the following steps: mixing and stirring iron tailing waste rocks and water, then adding a cementing material (cement, silica fume and fly ash), iron tailing sand and polypropylene fibers, stirring, then adding a mixed solution of water and an additive, stirring, loading into a concrete mold, and curing under standard curing conditions to prepare the pervious concrete. The concrete comprises the following components in percentage by mass: 55%-64% of iron tailing waste rock, 3%-6% of iron tailing sand, 20%-29% of cement, 1.5%-2.5% of silica fume, 5%-10% of fly ash, 5.5%-8.5% of water, 0.025%-0.030% of polypropylene fiber and 0.2%-1.0% of an additive. According to the method, the iron tailing waste rock and the iron tailing sand are used for replacing natural aggregate, so that the durability of the pervious concrete is improved while the high pervious rate and the high strength of the pervious concrete are ensured.
本发明提供一种高耐久性铁尾矿废石透水混凝土的制备方法，属于建筑材料技术领域。该方法将铁尾矿废石和水混合搅拌，然后加入胶凝材料(水泥、硅灰、粉煤灰)、铁尾矿砂和聚丙烯纤维，搅拌，再加入水与外加剂的混合溶液，搅拌后装入混凝土模具，在标准养护条件下养护，制备得到透水混凝土。按质量百分比，铁尾矿废石55％～64％，铁尾矿砂3％～6％，水泥20％～29％，硅灰1.5％～2.5％，粉煤灰5％～10％，水5.5％～8.5％，聚丙烯纤维0.025％～0.030％，外加剂0.2％～1.0％。该方法使用铁尾矿废石和铁尾矿砂替代天然骨料，在保证透水混凝土高透水率以及高强度的同时，还提高了透水混凝土的耐久性。
Preparation method of high-durability iron tailing waste rock pervious concrete
一种高耐久性铁尾矿废石透水混凝土的制备方法
HAN FANGHUI (author) / ZHANG HONGBO (author) / PU SHAOCHANG (author) / ZHANG ZENGQI (author) / ZHOU YU (author)
2021-11-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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