A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Negative-carbon high-performance concrete and preparation method thereof
The invention relates to the technical field of building materials, and discloses carbon-negative high-performance concrete and a preparation method thereof.The concrete is prepared by adopting ferrochrome slag as aggregate and partially replacing cement with slag powder, silica fume and waste stone powder, consumption of natural resources and energy is reduced, CO2 emission is reduced, and meanwhile efficient utilization of industrial solid waste is promoted; in addition, a mechanical interlocking structure is formed between the spherical holes in the surface of the ferrochrome slag and the set cement, so that the interface microstructure between the aggregate and the cement paste can be improved; meanwhile, in the high-temperature carbonization process, the olivine phase on the surface of the spherical hole is dissolved out in a high-temperature alkaline environment and is subjected to carbonization reaction, needle-rod-shaped magnesium carbonate crystals are generated in the spherical hole and are filled in an interface, so that the microstructure of the interface is further optimized, and the overall mechanical property of the concrete is improved.
本发明涉及建筑材料技术领域，公开了一种负碳高性能混凝土及其制备方法，采用铬铁合金渣作为骨料，利用矿渣粉、硅灰和废石粉部分取代水泥制备混凝土，既减少了自然资源和能源消耗，降低CO2排放，同时促进了工业固体废弃物的高效利用；此外铬铁合金渣表面的球形孔与水泥石间形成机械嵌锁结构，可以改善骨料与水泥浆体间界面微观结构；同时球形孔表面的橄榄石相在高温碳化过程中，在高温碱性环境下溶出并发生碳化反应，在球形孔内生成针棒状的碳酸镁晶体填充于界面，从而进一步优化界面微观结构，提升混凝土的整体力学性能。
Negative-carbon high-performance concrete and preparation method thereof
The invention relates to the technical field of building materials, and discloses carbon-negative high-performance concrete and a preparation method thereof.The concrete is prepared by adopting ferrochrome slag as aggregate and partially replacing cement with slag powder, silica fume and waste stone powder, consumption of natural resources and energy is reduced, CO2 emission is reduced, and meanwhile efficient utilization of industrial solid waste is promoted; in addition, a mechanical interlocking structure is formed between the spherical holes in the surface of the ferrochrome slag and the set cement, so that the interface microstructure between the aggregate and the cement paste can be improved; meanwhile, in the high-temperature carbonization process, the olivine phase on the surface of the spherical hole is dissolved out in a high-temperature alkaline environment and is subjected to carbonization reaction, needle-rod-shaped magnesium carbonate crystals are generated in the spherical hole and are filled in an interface, so that the microstructure of the interface is further optimized, and the overall mechanical property of the concrete is improved.
本发明涉及建筑材料技术领域，公开了一种负碳高性能混凝土及其制备方法，采用铬铁合金渣作为骨料，利用矿渣粉、硅灰和废石粉部分取代水泥制备混凝土，既减少了自然资源和能源消耗，降低CO2排放，同时促进了工业固体废弃物的高效利用；此外铬铁合金渣表面的球形孔与水泥石间形成机械嵌锁结构，可以改善骨料与水泥浆体间界面微观结构；同时球形孔表面的橄榄石相在高温碳化过程中，在高温碱性环境下溶出并发生碳化反应，在球形孔内生成针棒状的碳酸镁晶体填充于界面，从而进一步优化界面微观结构，提升混凝土的整体力学性能。
Negative-carbon high-performance concrete and preparation method thereof
一种负碳高性能混凝土及其制备方法
LIU CHUANBEI (author) / ZHANG LIHUA (author) / LIU PENGFEI (author) / LIU LAIBAO (author) / GU TAO (author) / ZHANG GAOYIN (author) / SHI XIANPAN (author)
2024-01-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Efficient negative carbon concrete and preparation method thereof
| European Patent Office | 2024
Negative carbon foam concrete and preparation method thereof
| European Patent Office | 2023
Recycled aggregate negative carbon pervious concrete and preparation method thereof
| European Patent Office | 2025
High-performance low-carbon concrete and preparation method thereof
| European Patent Office | 2023
Low-carbon high-performance concrete and preparation method thereof
| European Patent Office | 2025