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A platform for research: civil engineering, architecture and urbanism
Hot-press molded maintenance-free solid waste-based artificial stone and preparation method thereof
The invention relates to the technical field of building materials, and provides a hot-press molded maintenance-free solid waste-based artificial stone and a preparation method thereof. According to the characteristics that main components of the circulating fluidized bed fly ash contain quartz SiO2 and Al2O3 and main components of the carbide slag contain Ca (OH) 2, the circulating fluidized bed fly ash and the carbide slag are subjected to a pozzolanic reaction in the hot pressing process, and hydrated calcium silicate and hydrated calcium aluminate products are obtained; the fly ash of the circulating fluidized bed is subjected to certain sulfate excitation by utilizing the characteristics that main components in the desulfurized gypsum contain CaSO4. 2H2O and the desulfurized gypsum contains SO4 < 2->, so that the gelling activity of the fly ash of the circulating fluidized bed is improved; and finally, along with the proceeding of the hot pressing process, hydration reaction can be carried out between the three solid wastes of the circulating fluidized bed fly ash, the carbide slag and the desulfurized gypsum and water to generate gelatinous substances such as hydrated aluminosilicate and the like, so that the strength of the artificial stone is improved.
本发明涉及建筑材料技术领域，提供了一种热压成型免养护的固废基人造石材及其制备方法。利用循环流化床粉煤灰的主要成分中含有石英SiO2和Al2O3，电石渣的主要成分中含有Ca(OH)2的特点，循环流化床粉煤灰和电石渣在热压过程中进行火山灰反应，得到水化硅酸钙和水化铝酸钙产物；又利用脱硫石膏中的主要成分中含有CaSO4·2H2O，自身含有的SO42‑的特点，对循环流化床粉煤灰进行一定的硫酸盐激发，进而提高循环流化床粉煤灰的胶凝活性；最终，随着热压过程的进行，循环流化床粉煤灰、电石渣和脱硫石膏三种固废物和水之间又可以发生水化反应，生成水化硅铝酸盐等胶凝性物质，从而提高人造石材的强度。
Hot-press molded maintenance-free solid waste-based artificial stone and preparation method thereof
The invention relates to the technical field of building materials, and provides a hot-press molded maintenance-free solid waste-based artificial stone and a preparation method thereof. According to the characteristics that main components of the circulating fluidized bed fly ash contain quartz SiO2 and Al2O3 and main components of the carbide slag contain Ca (OH) 2, the circulating fluidized bed fly ash and the carbide slag are subjected to a pozzolanic reaction in the hot pressing process, and hydrated calcium silicate and hydrated calcium aluminate products are obtained; the fly ash of the circulating fluidized bed is subjected to certain sulfate excitation by utilizing the characteristics that main components in the desulfurized gypsum contain CaSO4. 2H2O and the desulfurized gypsum contains SO4 < 2->, so that the gelling activity of the fly ash of the circulating fluidized bed is improved; and finally, along with the proceeding of the hot pressing process, hydration reaction can be carried out between the three solid wastes of the circulating fluidized bed fly ash, the carbide slag and the desulfurized gypsum and water to generate gelatinous substances such as hydrated aluminosilicate and the like, so that the strength of the artificial stone is improved.
本发明涉及建筑材料技术领域，提供了一种热压成型免养护的固废基人造石材及其制备方法。利用循环流化床粉煤灰的主要成分中含有石英SiO2和Al2O3，电石渣的主要成分中含有Ca(OH)2的特点，循环流化床粉煤灰和电石渣在热压过程中进行火山灰反应，得到水化硅酸钙和水化铝酸钙产物；又利用脱硫石膏中的主要成分中含有CaSO4·2H2O，自身含有的SO42‑的特点，对循环流化床粉煤灰进行一定的硫酸盐激发，进而提高循环流化床粉煤灰的胶凝活性；最终，随着热压过程的进行，循环流化床粉煤灰、电石渣和脱硫石膏三种固废物和水之间又可以发生水化反应，生成水化硅铝酸盐等胶凝性物质，从而提高人造石材的强度。
Hot-press molded maintenance-free solid waste-based artificial stone and preparation method thereof
一种热压成型免养护的固废基人造石材及其制备方法
LIAO HONGQIANG (author) / DUAN DEDAN (author) / WANG JIANA (author) / CHENG FANGQIN (author)
2022-07-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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