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A platform for research: civil engineering, architecture and urbanism
Special composite admixture for ultra-high performance concrete, preparation method and concrete
The invention provides a special composite admixture for ultra-high performance concrete, a preparation method and concrete. The composite admixture comprises slag powder, boric sludge acid leaching tailings, desulfurized gypsum, marble powder, a defoaming agent and an expanding agent. According to the special composite admixture for the ultra-high performance concrete, raw materials needing to be calcined are not used in the special composite admixture, the admixture is industrial solid waste with the relatively low comprehensive utilization rate, silica fume does not need to be doped when the ultra-high performance concrete is prepared, and the production cost can be saved. The composite admixture provided by the invention improves the problems of large shrinkage and poor flowability of ultra-high performance concrete, and meanwhile, due to the use of a large amount of solid waste, the use amount of cement is reduced, and the composite admixture is green, low-carbon and environment-friendly and is simple in preparation and production process.
本发明提供一种超高性能混凝土专用复合掺合料、制备方法和混凝土，其中复合掺合料包含炉渣粉、硼泥酸浸尾渣、脱硫石膏、大理石粉、消泡剂和膨胀剂。本发明提供的超高性能混凝土专用复合掺合料专用复合掺合料中不使用需要煅烧的原料，掺合料为综合利用率相对较低的工业固废，且在配制超高性能混凝土时不需要掺加硅灰，可节省生产成本。本发明提供的复合掺合料改善超高性能混凝土收缩大、流动性差的问题，同时，由于大量使用固废，减少了水泥用量，绿色低碳环保制备生产工艺简单。
Special composite admixture for ultra-high performance concrete, preparation method and concrete
The invention provides a special composite admixture for ultra-high performance concrete, a preparation method and concrete. The composite admixture comprises slag powder, boric sludge acid leaching tailings, desulfurized gypsum, marble powder, a defoaming agent and an expanding agent. According to the special composite admixture for the ultra-high performance concrete, raw materials needing to be calcined are not used in the special composite admixture, the admixture is industrial solid waste with the relatively low comprehensive utilization rate, silica fume does not need to be doped when the ultra-high performance concrete is prepared, and the production cost can be saved. The composite admixture provided by the invention improves the problems of large shrinkage and poor flowability of ultra-high performance concrete, and meanwhile, due to the use of a large amount of solid waste, the use amount of cement is reduced, and the composite admixture is green, low-carbon and environment-friendly and is simple in preparation and production process.
本发明提供一种超高性能混凝土专用复合掺合料、制备方法和混凝土，其中复合掺合料包含炉渣粉、硼泥酸浸尾渣、脱硫石膏、大理石粉、消泡剂和膨胀剂。本发明提供的超高性能混凝土专用复合掺合料专用复合掺合料中不使用需要煅烧的原料，掺合料为综合利用率相对较低的工业固废，且在配制超高性能混凝土时不需要掺加硅灰，可节省生产成本。本发明提供的复合掺合料改善超高性能混凝土收缩大、流动性差的问题，同时，由于大量使用固废，减少了水泥用量，绿色低碳环保制备生产工艺简单。
Special composite admixture for ultra-high performance concrete, preparation method and concrete
一种超高性能混凝土专用复合掺合料、制备方法和混凝土
WANG NA (author) / YIN SHAONING (author) / SUN JUNMIN (author) / YUAN PENG (author) / ZHANG CHANG'AN (author) / WANG MAOYUE (author) / DAI YIYONG (author) / PAN DONG (author) / LI DUANLE (author) / LIAO SHUCONG (author)
2023-09-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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