A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Core-shell type cement admixture as well as preparation method and application thereof
The invention provides a core-shell cement admixture as well as a preparation method and application thereof, the admixture is formed by taking modified hydrated calcium silicate subjected to hydrophobization treatment through a silane coupling agent as a shell layer and alcohol amine fatty acid ester as a slow-release hydrophobic component through a Pickering emulsion method; a core-shell functional hybrid material with an alcohol amine fatty acid ester core and an early-strength inorganic material (modified hydrated calcium silicate) shell layer is prepared by a Pickering emulsion method, so that the compatibility between the alcohol amine fatty acid ester and a hydration product is improved, and the release rhythm of the alcohol amine fatty acid ester in cement paste is controlled; the calcium silicate hydrate seed crystal and the alcohol amine fatty acid ester type controlled-release material are synergic in beneficial effect, the early strength of the cement-based material can be improved, the anti-permeability of the microstructure of the cement-based material is enhanced, and the cement-based material has a certain strength synergistic effect.
本发明提供了一种核壳型水泥外加剂及其制备方法和应用，该外加剂以通过硅烷偶联剂进行疏水化处理的改性水化硅酸钙为壳层，以醇胺脂肪酸酯为缓释疏水组分，经皮克林乳液法形成；通过皮克林乳液法制备了醇胺脂肪酸酯核心、早强无机材料(改性水化硅酸钙)壳层的核壳功能型杂化材料，改善了醇胺脂肪酸酯与水化产物之间的相容性，控制了醇胺脂肪酸酯在水泥浆体中的释放节奏，实现了水化硅酸钙晶种与醇胺脂肪酸酯型控释材料的有益效果的协同，可同时改善水泥基材料早期强度，增强水泥基材料微结构抗渗性，并具备一定的强度增效作用。
Core-shell type cement admixture as well as preparation method and application thereof
The invention provides a core-shell cement admixture as well as a preparation method and application thereof, the admixture is formed by taking modified hydrated calcium silicate subjected to hydrophobization treatment through a silane coupling agent as a shell layer and alcohol amine fatty acid ester as a slow-release hydrophobic component through a Pickering emulsion method; a core-shell functional hybrid material with an alcohol amine fatty acid ester core and an early-strength inorganic material (modified hydrated calcium silicate) shell layer is prepared by a Pickering emulsion method, so that the compatibility between the alcohol amine fatty acid ester and a hydration product is improved, and the release rhythm of the alcohol amine fatty acid ester in cement paste is controlled; the calcium silicate hydrate seed crystal and the alcohol amine fatty acid ester type controlled-release material are synergic in beneficial effect, the early strength of the cement-based material can be improved, the anti-permeability of the microstructure of the cement-based material is enhanced, and the cement-based material has a certain strength synergistic effect.
本发明提供了一种核壳型水泥外加剂及其制备方法和应用，该外加剂以通过硅烷偶联剂进行疏水化处理的改性水化硅酸钙为壳层，以醇胺脂肪酸酯为缓释疏水组分，经皮克林乳液法形成；通过皮克林乳液法制备了醇胺脂肪酸酯核心、早强无机材料(改性水化硅酸钙)壳层的核壳功能型杂化材料，改善了醇胺脂肪酸酯与水化产物之间的相容性，控制了醇胺脂肪酸酯在水泥浆体中的释放节奏，实现了水化硅酸钙晶种与醇胺脂肪酸酯型控释材料的有益效果的协同，可同时改善水泥基材料早期强度，增强水泥基材料微结构抗渗性，并具备一定的强度增效作用。
Core-shell type cement admixture as well as preparation method and application thereof
一种核壳型水泥外加剂及其制备方法和应用
YANG YONG (author) / YAN HAN (author) / SHU XIN (author) / CHEN LEI (author) / ZHANG QIANQIAN (author) / RAN QIANPING (author) / LIU JIANZHONG (author) / HAN FANGYU (author)
2024-06-04
Patent
Electronic Resource
Chinese
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