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A platform for research: civil engineering, architecture and urbanism
Production process for preparing composite mineral admixture by using concrete residues
The invention belongs to the technical field of concrete residue treatment, and particularly relates to a production process for preparing a composite mineral admixture by using residual concrete residues in a commercial concrete production process. The production process comprises the following steps: drying concrete residue slurry, grinding, compounding with clinker, silica fume and mineral powder according to a certain proportion, and preparing a composite mineral admixture by using a multi-component compounding technology, and determining the optimal mix proportion range of the mixing amount of each raw material in the composite mineral admixture through an orthogonal test. According to the process, the waste slurry in the concrete production process is recycled, the environmental pollution and the resource waste are reduced, meanwhile, a certain degree of social and economic benefits can be obtained. The composite mineral admixture prepared by the process can replace cement in a large mixing amount, so that the use amount of the cement is greatly reduced; recycled concrete prepared from the mineral admixture has good strength, and the 28d strength of mortar can reach 95% or above; limestone resources and energy can be saved, and emission of carbon dioxide is reduced.
本发明属于混凝土残渣处理技术领域，具体涉及一种利用生产商品混凝土过程中残留的混凝土残渣制备复合矿物掺合料的生产工艺，步骤为：将混凝土残渣浆体烘干后磨细，与熟料、硅灰、矿粉按一定比例复合，利用多元复合技术制备复合矿物掺合料，并通过正交试验确定该复合矿物掺合料中各原料掺量的最佳配合比范围。该工艺实现了混凝土生产过程中的废浆再利用，减少环境污染和资源浪费，同时也可获得一定程度的社会经济效益。本发明配制的复合矿物掺合料可大掺量的替代水泥，大幅度降低水泥用量；利用本发明的矿物掺合料配制的再生混凝土拥有良好的强度，胶砂28d强度均能达到95％以上；并且可以节约石灰石资源、能源，同时减少二氧化碳的排放。
Production process for preparing composite mineral admixture by using concrete residues
The invention belongs to the technical field of concrete residue treatment, and particularly relates to a production process for preparing a composite mineral admixture by using residual concrete residues in a commercial concrete production process. The production process comprises the following steps: drying concrete residue slurry, grinding, compounding with clinker, silica fume and mineral powder according to a certain proportion, and preparing a composite mineral admixture by using a multi-component compounding technology, and determining the optimal mix proportion range of the mixing amount of each raw material in the composite mineral admixture through an orthogonal test. According to the process, the waste slurry in the concrete production process is recycled, the environmental pollution and the resource waste are reduced, meanwhile, a certain degree of social and economic benefits can be obtained. The composite mineral admixture prepared by the process can replace cement in a large mixing amount, so that the use amount of the cement is greatly reduced; recycled concrete prepared from the mineral admixture has good strength, and the 28d strength of mortar can reach 95% or above; limestone resources and energy can be saved, and emission of carbon dioxide is reduced.
本发明属于混凝土残渣处理技术领域，具体涉及一种利用生产商品混凝土过程中残留的混凝土残渣制备复合矿物掺合料的生产工艺，步骤为：将混凝土残渣浆体烘干后磨细，与熟料、硅灰、矿粉按一定比例复合，利用多元复合技术制备复合矿物掺合料，并通过正交试验确定该复合矿物掺合料中各原料掺量的最佳配合比范围。该工艺实现了混凝土生产过程中的废浆再利用，减少环境污染和资源浪费，同时也可获得一定程度的社会经济效益。本发明配制的复合矿物掺合料可大掺量的替代水泥，大幅度降低水泥用量；利用本发明的矿物掺合料配制的再生混凝土拥有良好的强度，胶砂28d强度均能达到95％以上；并且可以节约石灰石资源、能源，同时减少二氧化碳的排放。
Production process for preparing composite mineral admixture by using concrete residues
一种利用混凝土残渣制备复合矿物掺合料的生产工艺
CAO JIAN (author) / SUN YUCHENG (author) / MENG YUBING (author) / ZHANG YOULAI (author) / WANG ZHENLIN (author)
2021-06-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021