A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Solid waste grouting material for underlying goaf of highway subgrade and preparation method of solid waste grouting material
The invention relates to the technical field of solid waste recycling, and discloses a solid waste grouting material for an underlying goaf of a highway subgrade and a preparation method of the solid waste grouting material. Wherein the steel slag is high-alkalinity steel slag; the particle sizes of the fly ash, the steel slag and the desulfurized gypsum are respectively 16-45 microns, 7-27 microns and 35-60 microns; the solid waste grouting material is prepared by mixing and stirring fly ash, steel slag, desulfurized gypsum and water at normal temperature, the slurry fluidity of the grouting material in the whole grouting process is smaller than 35 S, and the compressive strength of the solid waste grouting material after coagulation is larger than or equal to 0.6 MPa. The total preparation cost of the grouting material is less than or equal to 50 yuan/m < 3 >. The grouting material can directly utilize a large amount of solid waste with the pore diameter larger than 200 nm, crushing is not needed, and the grouting material prepared only according to the formula meets the mechanical requirements of national highway subgrade underlying goaf grouting materials.
本发明涉及固废资源化技术领域，公开了一种用于公路路基下伏采空区的固废注浆材料及其制备方法，所述固废包括粉煤灰、钢渣、脱硫石膏；其中钢渣为高碱度钢渣；所述粉煤灰、钢渣、脱硫石膏粒径分布分别为16～45μm、7～27μm、35～60μm；所述固废注浆材料的制备过程为将粉煤灰、钢渣、脱硫石膏、水在常温下混合搅拌制得，所述注浆材料在注浆整个过程中浆液流动度小于35S，所述固废注浆材料凝结后抗压强度大于或等于0.6MPa；所述注浆材料制备总成本小于或等于50元/m3。本发明能直接利用含大量大于200nm孔径的固废，无需破碎，仅根据配方制备出的注浆材料满足国家公路路基下伏采空区注浆材料的力学要求。
Solid waste grouting material for underlying goaf of highway subgrade and preparation method of solid waste grouting material
The invention relates to the technical field of solid waste recycling, and discloses a solid waste grouting material for an underlying goaf of a highway subgrade and a preparation method of the solid waste grouting material. Wherein the steel slag is high-alkalinity steel slag; the particle sizes of the fly ash, the steel slag and the desulfurized gypsum are respectively 16-45 microns, 7-27 microns and 35-60 microns; the solid waste grouting material is prepared by mixing and stirring fly ash, steel slag, desulfurized gypsum and water at normal temperature, the slurry fluidity of the grouting material in the whole grouting process is smaller than 35 S, and the compressive strength of the solid waste grouting material after coagulation is larger than or equal to 0.6 MPa. The total preparation cost of the grouting material is less than or equal to 50 yuan/m < 3 >. The grouting material can directly utilize a large amount of solid waste with the pore diameter larger than 200 nm, crushing is not needed, and the grouting material prepared only according to the formula meets the mechanical requirements of national highway subgrade underlying goaf grouting materials.
本发明涉及固废资源化技术领域，公开了一种用于公路路基下伏采空区的固废注浆材料及其制备方法，所述固废包括粉煤灰、钢渣、脱硫石膏；其中钢渣为高碱度钢渣；所述粉煤灰、钢渣、脱硫石膏粒径分布分别为16～45μm、7～27μm、35～60μm；所述固废注浆材料的制备过程为将粉煤灰、钢渣、脱硫石膏、水在常温下混合搅拌制得，所述注浆材料在注浆整个过程中浆液流动度小于35S，所述固废注浆材料凝结后抗压强度大于或等于0.6MPa；所述注浆材料制备总成本小于或等于50元/m3。本发明能直接利用含大量大于200nm孔径的固废，无需破碎，仅根据配方制备出的注浆材料满足国家公路路基下伏采空区注浆材料的力学要求。
Solid waste grouting material for underlying goaf of highway subgrade and preparation method of solid waste grouting material
一种用于公路路基下伏采空区的固废注浆材料及其制备方法
XIAO JIE (author) / LIU CAIZHUANG (author) / CHANG JIN (author)
2023-08-01
Patent
Electronic Resource
Chinese
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