A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Building material prepared by synergistic carbonization of steel slag, desulfurized gypsum and fly ash and method
The invention belongs to the field of solid waste building materials, and particularly relates to a building material prepared by synergistic carbonization of steel slag, desulfurized gypsum and fly ash and a method. The building material is prepared from the following raw materials of steel slag, desulfurized gypsum, fly ash, sodium carbonate, ammonium bicarbonate, fine aggregate, coarse aggregate, a retarder, a water reducing agent and a defoaming agent and according to the following process: adding water into the raw materials, conducting stirring vibrating or compression molding for 2-4 hours, then conducting demolding, putting a test piece into a reaction kettle, controlling the temperature, humidity, pressure and CO2 volume concentration of the reaction kettle, and carrying out low-temperature and high-temperature two-stage carbonization maintenance to obtain the building material. According to the invention, a carbonization excitant is used for promoting the synergistic carbonization of the steel slag, the desulfurized gypsum and the fly ash, so that the carbonization conversion rate and efficiency are improved, and an effective method is provided for resource utilization ofsolid wastes of the steel slag, the desulfurized gypsum and the fly ash and preparation of the building material by capturing industrial waste gas CO2.
本发明属于固废建筑材料领域，具体为钢渣‑脱硫石膏‑粉煤灰协同碳化制备的建材及方法，按以下原材料和工艺制备而成：原材料为钢渣、脱硫石膏、粉煤灰、碳酸钠、碳酸氢铵、细骨料、粗骨料、缓凝剂、减水剂、消泡剂，将上述原材料加水搅拌振动或压制成型后2～4h脱模，将试件置于反应釜中，通过控制反应釜的温度、湿度、压力和CO2体积浓度，采用低温和高温两阶段碳化养护获得建材。本发明利用碳化激发剂促进钢渣、脱硫石膏、粉煤灰协同碳化，提高碳化转化率和效率，为钢渣、脱硫石膏、粉煤灰的固废资源化利用和捕集工业废气CO2制备建材提供了有效方法。
Building material prepared by synergistic carbonization of steel slag, desulfurized gypsum and fly ash and method
The invention belongs to the field of solid waste building materials, and particularly relates to a building material prepared by synergistic carbonization of steel slag, desulfurized gypsum and fly ash and a method. The building material is prepared from the following raw materials of steel slag, desulfurized gypsum, fly ash, sodium carbonate, ammonium bicarbonate, fine aggregate, coarse aggregate, a retarder, a water reducing agent and a defoaming agent and according to the following process: adding water into the raw materials, conducting stirring vibrating or compression molding for 2-4 hours, then conducting demolding, putting a test piece into a reaction kettle, controlling the temperature, humidity, pressure and CO2 volume concentration of the reaction kettle, and carrying out low-temperature and high-temperature two-stage carbonization maintenance to obtain the building material. According to the invention, a carbonization excitant is used for promoting the synergistic carbonization of the steel slag, the desulfurized gypsum and the fly ash, so that the carbonization conversion rate and efficiency are improved, and an effective method is provided for resource utilization ofsolid wastes of the steel slag, the desulfurized gypsum and the fly ash and preparation of the building material by capturing industrial waste gas CO2.
本发明属于固废建筑材料领域，具体为钢渣‑脱硫石膏‑粉煤灰协同碳化制备的建材及方法，按以下原材料和工艺制备而成：原材料为钢渣、脱硫石膏、粉煤灰、碳酸钠、碳酸氢铵、细骨料、粗骨料、缓凝剂、减水剂、消泡剂，将上述原材料加水搅拌振动或压制成型后2～4h脱模，将试件置于反应釜中，通过控制反应釜的温度、湿度、压力和CO2体积浓度，采用低温和高温两阶段碳化养护获得建材。本发明利用碳化激发剂促进钢渣、脱硫石膏、粉煤灰协同碳化，提高碳化转化率和效率，为钢渣、脱硫石膏、粉煤灰的固废资源化利用和捕集工业废气CO2制备建材提供了有效方法。
Building material prepared by synergistic carbonization of steel slag, desulfurized gypsum and fly ash and method
钢渣-脱硫石膏-粉煤灰协同碳化制备的建材及方法
JIA GUANHUA (author)
2021-03-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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