Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing reactive artificial sand based on red mud reinforced steel slag accelerated carbonization
The invention belongs to the technical field of green building materials, and provides a method for preparing reactive artificial sand based on red mud reinforced steel slag accelerated carbonization. According to the method, an accelerated carbonization means is adopted, the artificial sand is prepared through three carbonization processes with different effects, the CO2 absorption rate is further increased, and meanwhile the mechanical property of the artificial sand and the cementing property of an interface between the artificial sand and cement paste are greatly improved. The preparation method has the advantages of high preparation efficiency, high strength of the artificial sand, no stability problem and the like. Another way is provided for replacing natural river sand in concrete, and the use amount of the river sand can be reduced on the premise that the mechanical property of a cement-based material is not reduced when the natural river sand is applied to cement mortar and concrete. Besides, the capacity of the domestic market every year is about 6-8 billion tons only by replacing 30% of the volume of the river sand aggregate, and the low-grade solid waste such as steel slag and the like can be consumed by more than 0.5 billion tons.
本发明属于绿色建材技术领域，提供了一种基于赤泥增强钢渣加速碳化制备反应性人工砂的方法。本发明采用加速碳化的手段，利用三步不同效果的碳化过程以制备人工砂，在进一步提升CO2吸收率的同时大幅提升人工砂的力学性能及人工砂与水泥浆体界面的胶结性能。该发明具有制备效率高，人工砂高强，无安定性问题等优点。为替代混凝土中的天然河砂提供了另一种途径，应用到水泥砂浆及混凝土中可以在不降低水泥基材料力学性能的前提下减少河砂用量。此外，仅按照替代河砂骨料体积的30％计算，每年国内市场容量约6‑8亿吨，可消纳钢渣等低品位固废超过5亿吨。
Method for preparing reactive artificial sand based on red mud reinforced steel slag accelerated carbonization
The invention belongs to the technical field of green building materials, and provides a method for preparing reactive artificial sand based on red mud reinforced steel slag accelerated carbonization. According to the method, an accelerated carbonization means is adopted, the artificial sand is prepared through three carbonization processes with different effects, the CO2 absorption rate is further increased, and meanwhile the mechanical property of the artificial sand and the cementing property of an interface between the artificial sand and cement paste are greatly improved. The preparation method has the advantages of high preparation efficiency, high strength of the artificial sand, no stability problem and the like. Another way is provided for replacing natural river sand in concrete, and the use amount of the river sand can be reduced on the premise that the mechanical property of a cement-based material is not reduced when the natural river sand is applied to cement mortar and concrete. Besides, the capacity of the domestic market every year is about 6-8 billion tons only by replacing 30% of the volume of the river sand aggregate, and the low-grade solid waste such as steel slag and the like can be consumed by more than 0.5 billion tons.
本发明属于绿色建材技术领域，提供了一种基于赤泥增强钢渣加速碳化制备反应性人工砂的方法。本发明采用加速碳化的手段，利用三步不同效果的碳化过程以制备人工砂，在进一步提升CO2吸收率的同时大幅提升人工砂的力学性能及人工砂与水泥浆体界面的胶结性能。该发明具有制备效率高，人工砂高强，无安定性问题等优点。为替代混凝土中的天然河砂提供了另一种途径，应用到水泥砂浆及混凝土中可以在不降低水泥基材料力学性能的前提下减少河砂用量。此外，仅按照替代河砂骨料体积的30％计算，每年国内市场容量约6‑8亿吨，可消纳钢渣等低品位固废超过5亿吨。
Method for preparing reactive artificial sand based on red mud reinforced steel slag accelerated carbonization
一种基于赤泥增强钢渣加速碳化制备反应性人工砂的方法
MO LIWU (Autor:in) / XU MAOCHUN (Autor:in)
13.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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