A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Superfine composite mineral admixture and concrete
The invention provides a superfine composite mineral admixture and concrete, relates to the technical field of building materials, and aims to improve the strength of marine concrete and reduce the cement consumption by replacing part of cement with the superfine composite mineral admixture. The mineral admixture comprises fly ash, slag mixed powder and silica fume, and the D97 of the fly ash is less than 10 [mu] m; the slag mixed powder is mixed powder formed by mixing one or more of manganese slag powder, iron tailing powder, lithium slag powder, nickel slag and vanadium-titanium slag with slag powder according to a specific weight ratio, and the specific surface area of the slag mixed powder is 800 m < 2 >/kg-1500 m < 2 >/kg; and the specific surface area of the silica fume is greater than 16000 m < 2 >/kg. According to the mineral admixture, the aim of improving the erosion resistance of concrete is achieved, superfine grinding is adopted, and reasonable particle size matching is conducted, so that the porosity of the concrete is reduced, and the compactness of the concrete is higher. When in use, the mineral admixture can completely replace mineral powder to be doped and replace part of cement, and the use amount of cement can be reduced by 20% at most, so that the production cost of concrete is reduced.
本发明提供了一种超细复合矿物掺合料及混凝土，涉及建筑材料技术领域，以提高海工混凝土强度且超细复合矿物掺合料可替代部分水泥以降低水泥用量。该矿物掺合料包括粉煤灰、矿渣混合粉以及硅灰，其中，粉煤灰的D97＜10μm；矿渣混合粉为锰渣粉、铁尾矿粉、锂渣粉、镍渣、钒钛渣中的一种或多种与矿渣粉按特定重量比混合的混合粉，矿渣混合粉的比表面积800m2/kg～1500m2/kg；硅灰的比表面积大于16000m2/kg。本矿物掺合料以提高混凝土抗侵蚀性能为目标，采用超细粉磨，进行合理的粒径配比，使混凝土孔隙率降低，混凝土密实度更高。本矿物掺合料使用时可完全替代矿粉掺入并替代部分水泥，最高能够实现降低20％水泥用量，从而降低了混凝土生产成本。
Superfine composite mineral admixture and concrete
The invention provides a superfine composite mineral admixture and concrete, relates to the technical field of building materials, and aims to improve the strength of marine concrete and reduce the cement consumption by replacing part of cement with the superfine composite mineral admixture. The mineral admixture comprises fly ash, slag mixed powder and silica fume, and the D97 of the fly ash is less than 10 [mu] m; the slag mixed powder is mixed powder formed by mixing one or more of manganese slag powder, iron tailing powder, lithium slag powder, nickel slag and vanadium-titanium slag with slag powder according to a specific weight ratio, and the specific surface area of the slag mixed powder is 800 m < 2 >/kg-1500 m < 2 >/kg; and the specific surface area of the silica fume is greater than 16000 m < 2 >/kg. According to the mineral admixture, the aim of improving the erosion resistance of concrete is achieved, superfine grinding is adopted, and reasonable particle size matching is conducted, so that the porosity of the concrete is reduced, and the compactness of the concrete is higher. When in use, the mineral admixture can completely replace mineral powder to be doped and replace part of cement, and the use amount of cement can be reduced by 20% at most, so that the production cost of concrete is reduced.
本发明提供了一种超细复合矿物掺合料及混凝土，涉及建筑材料技术领域，以提高海工混凝土强度且超细复合矿物掺合料可替代部分水泥以降低水泥用量。该矿物掺合料包括粉煤灰、矿渣混合粉以及硅灰，其中，粉煤灰的D97＜10μm；矿渣混合粉为锰渣粉、铁尾矿粉、锂渣粉、镍渣、钒钛渣中的一种或多种与矿渣粉按特定重量比混合的混合粉，矿渣混合粉的比表面积800m2/kg～1500m2/kg；硅灰的比表面积大于16000m2/kg。本矿物掺合料以提高混凝土抗侵蚀性能为目标，采用超细粉磨，进行合理的粒径配比，使混凝土孔隙率降低，混凝土密实度更高。本矿物掺合料使用时可完全替代矿粉掺入并替代部分水泥，最高能够实现降低20％水泥用量，从而降低了混凝土生产成本。
Superfine composite mineral admixture and concrete
超细复合矿物掺合料及混凝土
KONG FANMIN (author) / CHEN XIWANG (author) / ZHANG DENGPING (author) / NI KUN (author) / LI YUE (author) / TONG LIN (author) / SONG YUNQIAO (author) / JIN LUYUN (author) / YANG BOWEN (author)
2023-07-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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