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A platform for research: civil engineering, architecture and urbanism
All-solid-waste carbon-sequestration prestressed green concrete hollow slab and preparation method thereof
The invention discloses a method for preparing all-solid-waste carbon-sequestration prestressed green concrete, which comprises the following steps: respectively carrying out separate dry grinding on 50-65 parts by weight of copper slag, 20-30 parts by weight of wollastonite tailing powder and 15-20 parts by weight of carbide slag, and then screening to obtain mixed powder with the particle size of 20-40 mu m; uniformly mixing the mixed powder and water according to a weight ratio of 1: 2, and carrying out wet grinding on the mixed powder, 2-5 parts of a polycarboxylic acid water reducer, 1-4 parts of magnesium chloride, 0.3-0.8 part of cyanoacetic acid and 170-230 parts of copper slag fine aggregate under the condition of introducing CO2 gas to obtain mortar; and uniformly mixing and stirring the mortar and 255-345 parts of gravel with the particle size of 6-25mm, and then vibrating, forming and curing to obtain the prestressed concrete hollow slab. The copper slag, the wollastonite tailings and the carbide slag are used as binding materials, the copper slag is used as fine aggregate, the effect of replacing all solid wastes is achieved, and the effects of energy conservation, emission reduction, low carbon and environmental protection are achieved.
本发明公开了一种全固废固碳预应力绿色混凝土的方法，所述方法包括：分别将以重量份数计的50～65份铜渣、20～30份硅灰石尾矿粉和15～20份电石渣进行分开干磨，后通过筛分得到粒径为20～40μm的混合粉末；将所述混合粉末和水按照1：2的重量比混匀并与2～5份聚羧酸减水剂，1～4份氯化镁，0.3～0.8份氰基乙酸，170～230份铜渣细骨料一起在通入CO2气体条件下湿磨，得到砂浆；将所述砂浆与粒径为6～25mm的碎石255～345份混匀搅拌，后经过振捣、成型、养护得到预应力混凝土空心板。本发明用铜渣、硅灰石尾矿、电石渣作为胶凝材料，铜渣作为细骨料，实现了全固废代替的效果，具有节能减排，低碳环保作用。
All-solid-waste carbon-sequestration prestressed green concrete hollow slab and preparation method thereof
The invention discloses a method for preparing all-solid-waste carbon-sequestration prestressed green concrete, which comprises the following steps: respectively carrying out separate dry grinding on 50-65 parts by weight of copper slag, 20-30 parts by weight of wollastonite tailing powder and 15-20 parts by weight of carbide slag, and then screening to obtain mixed powder with the particle size of 20-40 mu m; uniformly mixing the mixed powder and water according to a weight ratio of 1: 2, and carrying out wet grinding on the mixed powder, 2-5 parts of a polycarboxylic acid water reducer, 1-4 parts of magnesium chloride, 0.3-0.8 part of cyanoacetic acid and 170-230 parts of copper slag fine aggregate under the condition of introducing CO2 gas to obtain mortar; and uniformly mixing and stirring the mortar and 255-345 parts of gravel with the particle size of 6-25mm, and then vibrating, forming and curing to obtain the prestressed concrete hollow slab. The copper slag, the wollastonite tailings and the carbide slag are used as binding materials, the copper slag is used as fine aggregate, the effect of replacing all solid wastes is achieved, and the effects of energy conservation, emission reduction, low carbon and environmental protection are achieved.
本发明公开了一种全固废固碳预应力绿色混凝土的方法，所述方法包括：分别将以重量份数计的50～65份铜渣、20～30份硅灰石尾矿粉和15～20份电石渣进行分开干磨，后通过筛分得到粒径为20～40μm的混合粉末；将所述混合粉末和水按照1：2的重量比混匀并与2～5份聚羧酸减水剂，1～4份氯化镁，0.3～0.8份氰基乙酸，170～230份铜渣细骨料一起在通入CO2气体条件下湿磨，得到砂浆；将所述砂浆与粒径为6～25mm的碎石255～345份混匀搅拌，后经过振捣、成型、养护得到预应力混凝土空心板。本发明用铜渣、硅灰石尾矿、电石渣作为胶凝材料，铜渣作为细骨料，实现了全固废代替的效果，具有节能减排，低碳环保作用。
All-solid-waste carbon-sequestration prestressed green concrete hollow slab and preparation method thereof
一种全固废固碳预应力绿色混凝土空心板及其制备方法
WANG YINGBIN (author) / WANG CONG (author) / XIANG ZHIDING (author) / HE XINGYANG (author) / SU YING (author) / YANG JIN (author) / LI YUBO (author) / JIN ZIHAO (author)
2023-08-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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