Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Carbon nanomaterial in-situ modified lithium salt solid waste powder and preparation method thereof
The invention relates to the technical field of multifunctional building materials, and discloses carbon nanomaterial in-situ modified lithium salt solid waste powder and a preparation method thereof, which can greatly reduce the energy barrier of converting amorphous carbon atoms into graphene and promote the conversion of graphene, and can generate more amorphous Al2O3 in a high-temperature treatment process; after part of cement is replaced by the modified lithium salt solid waste, the speed that the lithium salt solid waste powder participates in the hydration reaction is high, graphene and the lithium salt solid waste powder generate a synergistic hydration reaction, and the in-situ growth graphene has a template arrangement effect, so that under the promotion action of lithium ions in the lithium salt solid waste, the in-situ growth of the lithium salt solid waste powder is realized. Secondary hydration products generated by the modified lithium salt solid waste powder are regularly and densely arranged in pores of the set cement, so that the porosity of the set cement is remarkably reduced; graphene and amorphous Al2O3 generate a synergistic effect, so that the formation of hemicarbonates such as low-carbon hydrated calcium carbonate and the like in the hydration product is promoted, the crystal structure of the AFt-phase hydration product is favorably stabilized, and the mechanical property development and the stability of set cement are guaranteed.
本发明涉及多功能建筑材料技术领域，公开了一种碳纳米材料原位改性的锂盐固废粉末及其制备方法，大大降低非晶碳原子转化成石墨烯的能量势垒，促进石墨烯的转化，而且高温处理过程可以生成更多的非晶态Al2O3；改性的锂盐固废替代部分水泥后，锂盐固废粉末参与水化反应的速率快，石墨烯与锂盐固废粉末产生协同水化反应，基于原位生长的石墨烯具有模板排布效应，在锂盐固废中锂离子的促进作用下，改性的锂盐固废粉末产生的二次水化产物在水泥石孔隙中规则地密排布，显著降低水泥石孔隙率；石墨烯与非晶态Al2O3产生协同作用，促进水化产物中低碳水化碳铝酸钙等半碳酸盐产物的形成，有助于稳定AFt相水化产物的晶体结构，保障水泥石力学性能发展和安定性。
Carbon nanomaterial in-situ modified lithium salt solid waste powder and preparation method thereof
The invention relates to the technical field of multifunctional building materials, and discloses carbon nanomaterial in-situ modified lithium salt solid waste powder and a preparation method thereof, which can greatly reduce the energy barrier of converting amorphous carbon atoms into graphene and promote the conversion of graphene, and can generate more amorphous Al2O3 in a high-temperature treatment process; after part of cement is replaced by the modified lithium salt solid waste, the speed that the lithium salt solid waste powder participates in the hydration reaction is high, graphene and the lithium salt solid waste powder generate a synergistic hydration reaction, and the in-situ growth graphene has a template arrangement effect, so that under the promotion action of lithium ions in the lithium salt solid waste, the in-situ growth of the lithium salt solid waste powder is realized. Secondary hydration products generated by the modified lithium salt solid waste powder are regularly and densely arranged in pores of the set cement, so that the porosity of the set cement is remarkably reduced; graphene and amorphous Al2O3 generate a synergistic effect, so that the formation of hemicarbonates such as low-carbon hydrated calcium carbonate and the like in the hydration product is promoted, the crystal structure of the AFt-phase hydration product is favorably stabilized, and the mechanical property development and the stability of set cement are guaranteed.
本发明涉及多功能建筑材料技术领域，公开了一种碳纳米材料原位改性的锂盐固废粉末及其制备方法，大大降低非晶碳原子转化成石墨烯的能量势垒，促进石墨烯的转化，而且高温处理过程可以生成更多的非晶态Al2O3；改性的锂盐固废替代部分水泥后，锂盐固废粉末参与水化反应的速率快，石墨烯与锂盐固废粉末产生协同水化反应，基于原位生长的石墨烯具有模板排布效应，在锂盐固废中锂离子的促进作用下，改性的锂盐固废粉末产生的二次水化产物在水泥石孔隙中规则地密排布，显著降低水泥石孔隙率；石墨烯与非晶态Al2O3产生协同作用，促进水化产物中低碳水化碳铝酸钙等半碳酸盐产物的形成，有助于稳定AFt相水化产物的晶体结构，保障水泥石力学性能发展和安定性。
Carbon nanomaterial in-situ modified lithium salt solid waste powder and preparation method thereof
一种碳纳米材料原位改性的锂盐固废粉末及其制备方法
LIU LAIBAO (Autor:in) / ZHANG GAOYIN (Autor:in) / ZHANG LEI (Autor:in) / LIU CHUANBEI (Autor:in) / WANG WEILONG (Autor:in) / YANG LI (Autor:in) / GU TAO (Autor:in) / DAN YONG (Autor:in) / ZHAO PENG (Autor:in) / HE YONG (Autor:in)
30.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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