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A platform for research: civil engineering, architecture and urbanism
The invention relates to a preparation method of modified coal gangue steel slag concrete. The raw materials are spontaneous combustion coal gangue powder and steel slag. The spontaneous combustion coal gangue powder and the steel slag are mixed and subjected to heat treatment, and then cement is replaced by different replacement rates to be doped into concrete. After the coal gangue and the steel slag are subjected to blending heat treatment, minerals with gelling property appear, and active silica-alumina can also be decomposed under the condition of high-temperature calcination of the coal gangue. After the two solid wastes are subjected to blending heat treatment, the deficiency of silicon in the steel slag is made up, the deficiency of calcium in the coal gangue is also made up, and a compensation effect on volume shrinkage of the set cement is achieved. The problem of environmental pollution caused by stockpiling of the coal gangue and the steel slag is solved, large-scale utilization of the coal gangue and the steel slag is achieved, a new way is provided for resource utilization of the coal gangue, and the concept of sustainable development is met.
本发明涉及一种改性煤矸石钢渣混凝土的制备方法，原料为自燃煤矸石粉及钢渣。本发明将自燃煤矸石粉与钢渣混合热处理，然后以不同替代率替代水泥掺入混凝土中。煤矸石和钢渣共混热处理后，出现了具有胶凝性的矿物，煤矸石高温煅烧的情况下也能分解出活性硅铝。两种固体废弃物在共混热处理后既弥补钢渣中硅的不足，也弥补煤矸石中钙的不足，而且对水泥石的体积收缩有补偿效应。本发明解决了煤矸石、钢渣堆存带来的环境污染问题，实现了煤矸石、钢渣的规模化利用，为煤矸石资源化利用提供了新的途径，符合可持续发展的理念。
The invention relates to a preparation method of modified coal gangue steel slag concrete. The raw materials are spontaneous combustion coal gangue powder and steel slag. The spontaneous combustion coal gangue powder and the steel slag are mixed and subjected to heat treatment, and then cement is replaced by different replacement rates to be doped into concrete. After the coal gangue and the steel slag are subjected to blending heat treatment, minerals with gelling property appear, and active silica-alumina can also be decomposed under the condition of high-temperature calcination of the coal gangue. After the two solid wastes are subjected to blending heat treatment, the deficiency of silicon in the steel slag is made up, the deficiency of calcium in the coal gangue is also made up, and a compensation effect on volume shrinkage of the set cement is achieved. The problem of environmental pollution caused by stockpiling of the coal gangue and the steel slag is solved, large-scale utilization of the coal gangue and the steel slag is achieved, a new way is provided for resource utilization of the coal gangue, and the concept of sustainable development is met.
本发明涉及一种改性煤矸石钢渣混凝土的制备方法，原料为自燃煤矸石粉及钢渣。本发明将自燃煤矸石粉与钢渣混合热处理，然后以不同替代率替代水泥掺入混凝土中。煤矸石和钢渣共混热处理后，出现了具有胶凝性的矿物，煤矸石高温煅烧的情况下也能分解出活性硅铝。两种固体废弃物在共混热处理后既弥补钢渣中硅的不足，也弥补煤矸石中钙的不足，而且对水泥石的体积收缩有补偿效应。本发明解决了煤矸石、钢渣堆存带来的环境污染问题，实现了煤矸石、钢渣的规模化利用，为煤矸石资源化利用提供了新的途径，符合可持续发展的理念。
Preparation method of modified coal gangue steel slag concrete
一种改性煤矸石钢渣混凝土的制备方法
2024-05-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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