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A platform for research: civil engineering, architecture and urbanism
Special cementing material for secant pile concrete as well as preparation method and application of special cementing material
The invention discloses a special cementing material for secant pile concrete as well as a preparation method and application of the special cementing material. The special cementing material comprises the following components in parts by weight: 50-60 parts of Portland cement clinker, 5-10 parts of fly ash, 40-60 parts of sludge incineration residues and 3-5 parts of gypsum. The secant pile concrete is prepared from 200 to 240 parts of the special cementing material, 40 to 50 parts of fly ash, 50 to 70 parts of mineral powder, 730 to 790 parts of sand, 1030 to 1050 parts of gravel, 3 to 5 parts of a water reducing agent, 0.4 to 1.2 parts of a retarder and 160 to 180 parts of water. Based on the retarding characteristic of phosphorus in the sludge incineration residues, the special cementing material is developed by adopting solid wastes such as the sludge incineration residues, the fly ash and the gypsum and is used for concrete for supporting the secant pile of the foundation pit, so that the problem of secondary pollution caused by stacking of the sludge incineration residues is solved fundamentally, and the requirement of super-long-time coagulation during construction is met; cost is saved, and emission and carbon are reduced.
本发明公开了一种咬合桩混凝土专用胶凝材料及其制备方法和应用，按照重量份计专用胶凝材料包括：硅酸盐水泥熟料50～60份、粉煤灰5～10份、污泥焚烧残渣40～60份和石膏3～5份；咬合桩混凝土包括上述专用胶凝材料200～240份、粉煤灰40～50份、矿粉50～70份、砂730～790份、碎石1030～1050份、减水剂3～5份、缓凝剂0.4～1.2份和水160～180份。本发明基于污泥焚烧残渣中磷的缓凝特性，采用污泥焚烧残渣、粉煤灰、石膏等固废开发专用胶凝材料，用于基坑咬合桩支护的混凝土，不仅从根源上解决污泥焚烧残渣堆放产生的二次污染问题，而且满足施工时超长时间凝结的要求，节约成本，减排降碳。
Special cementing material for secant pile concrete as well as preparation method and application of special cementing material
The invention discloses a special cementing material for secant pile concrete as well as a preparation method and application of the special cementing material. The special cementing material comprises the following components in parts by weight: 50-60 parts of Portland cement clinker, 5-10 parts of fly ash, 40-60 parts of sludge incineration residues and 3-5 parts of gypsum. The secant pile concrete is prepared from 200 to 240 parts of the special cementing material, 40 to 50 parts of fly ash, 50 to 70 parts of mineral powder, 730 to 790 parts of sand, 1030 to 1050 parts of gravel, 3 to 5 parts of a water reducing agent, 0.4 to 1.2 parts of a retarder and 160 to 180 parts of water. Based on the retarding characteristic of phosphorus in the sludge incineration residues, the special cementing material is developed by adopting solid wastes such as the sludge incineration residues, the fly ash and the gypsum and is used for concrete for supporting the secant pile of the foundation pit, so that the problem of secondary pollution caused by stacking of the sludge incineration residues is solved fundamentally, and the requirement of super-long-time coagulation during construction is met; cost is saved, and emission and carbon are reduced.
本发明公开了一种咬合桩混凝土专用胶凝材料及其制备方法和应用，按照重量份计专用胶凝材料包括：硅酸盐水泥熟料50～60份、粉煤灰5～10份、污泥焚烧残渣40～60份和石膏3～5份；咬合桩混凝土包括上述专用胶凝材料200～240份、粉煤灰40～50份、矿粉50～70份、砂730～790份、碎石1030～1050份、减水剂3～5份、缓凝剂0.4～1.2份和水160～180份。本发明基于污泥焚烧残渣中磷的缓凝特性，采用污泥焚烧残渣、粉煤灰、石膏等固废开发专用胶凝材料，用于基坑咬合桩支护的混凝土，不仅从根源上解决污泥焚烧残渣堆放产生的二次污染问题，而且满足施工时超长时间凝结的要求，节约成本，减排降碳。
Special cementing material for secant pile concrete as well as preparation method and application of special cementing material
一种咬合桩混凝土专用胶凝材料及其制备方法和应用
WANG QIONG (author) / WANG LIHUA (author) / YANG LIXIANG (author) / ZHOU WEI (author) / QIAN YAOLI (author) / LU YUFEI (author) / LU MEIRONG (author) / QU XIANWEI (author) / ZOU BOYUAN (author) / HAN YUNTING (author)
2023-05-05
Patent
Electronic Resource
Chinese
| European Patent Office | 2022
| European Patent Office | 2022
| European Patent Office | 2024
| European Patent Office | 2022
| European Patent Office | 2024