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A platform for research: civil engineering, architecture and urbanism
Preparation method of all-iron tailing waste rock aggregate pervious concrete
The invention provides a preparation method of all-iron tailing waste rock aggregate pervious concrete, and belongs to the technical field of building materials. The method comprises the following steps of: by taking 27%-35% of P.O42.5-grade ordinary Portland cement, 54%-64% of iron tailing waste rock aggregate with the particle size of 4.75-9.5 mm, 0.1%-0.5% of an air entraining agent and a water reducing agent and 1.5%-2.2% of silica fume as raw materials, mixing and stirring the air entraining agent, the water reducing agent and water well to obtain a mixed solution; and well mixing and stirring the iron tailing waste rock aggregate, the ordinary Portland cement, the silica fume and half of the mixed solution, adding the rest of the mixed solution, continuing to stir well, putting the mixture into a mold, and curing for 28 days under standard curing conditions to obtain pervious concrete. The pervious concrete is prepared by using the iron tailing waste rocks to completely replace natural aggregate and using ordinary Portland cement and silica fume as cementing materials, and the water reducing agent and the air entraining agent are added, so that the strength of the pervious concrete can be ensured while the high permeability rate of the pervious concrete is ensured.
本发明提供一种全铁尾矿废石骨料透水混凝土的制备方法，属于建筑材料技术领域。该方法以27％～35％的P·O42.5级普通硅酸盐水泥、54％～64％的粒径为4.75～9.5mm的铁尾矿废石骨料、0.1％～0.5％的引气剂和减水剂、1.5％～2.2％的硅灰为原料，将引气剂和减水剂以及水混合搅拌均匀，得到混合溶液；再将铁尾矿废石骨料、普通硅酸盐水泥、硅灰以及一半的混合溶液混合搅拌均匀，再加入剩余的混合溶液，继续搅拌均匀，将其装模并在标准养护条件下养护28d，制备得到透水混凝土。本发明使用铁尾矿废石全部替代天然骨料，普通硅酸盐水泥和硅灰为胶凝材料制备透水混凝土，外加剂为减水剂和引气剂，在保证透水混凝土高透水率的同时，也可以保证透水混凝土的强度。
Preparation method of all-iron tailing waste rock aggregate pervious concrete
The invention provides a preparation method of all-iron tailing waste rock aggregate pervious concrete, and belongs to the technical field of building materials. The method comprises the following steps of: by taking 27%-35% of P.O42.5-grade ordinary Portland cement, 54%-64% of iron tailing waste rock aggregate with the particle size of 4.75-9.5 mm, 0.1%-0.5% of an air entraining agent and a water reducing agent and 1.5%-2.2% of silica fume as raw materials, mixing and stirring the air entraining agent, the water reducing agent and water well to obtain a mixed solution; and well mixing and stirring the iron tailing waste rock aggregate, the ordinary Portland cement, the silica fume and half of the mixed solution, adding the rest of the mixed solution, continuing to stir well, putting the mixture into a mold, and curing for 28 days under standard curing conditions to obtain pervious concrete. The pervious concrete is prepared by using the iron tailing waste rocks to completely replace natural aggregate and using ordinary Portland cement and silica fume as cementing materials, and the water reducing agent and the air entraining agent are added, so that the strength of the pervious concrete can be ensured while the high permeability rate of the pervious concrete is ensured.
本发明提供一种全铁尾矿废石骨料透水混凝土的制备方法，属于建筑材料技术领域。该方法以27％～35％的P·O42.5级普通硅酸盐水泥、54％～64％的粒径为4.75～9.5mm的铁尾矿废石骨料、0.1％～0.5％的引气剂和减水剂、1.5％～2.2％的硅灰为原料，将引气剂和减水剂以及水混合搅拌均匀，得到混合溶液；再将铁尾矿废石骨料、普通硅酸盐水泥、硅灰以及一半的混合溶液混合搅拌均匀，再加入剩余的混合溶液，继续搅拌均匀，将其装模并在标准养护条件下养护28d，制备得到透水混凝土。本发明使用铁尾矿废石全部替代天然骨料，普通硅酸盐水泥和硅灰为胶凝材料制备透水混凝土，外加剂为减水剂和引气剂，在保证透水混凝土高透水率的同时，也可以保证透水混凝土的强度。
Preparation method of all-iron tailing waste rock aggregate pervious concrete
一种全铁尾矿废石骨料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)
2021-11-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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