A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of Portland cement hydration product modifier
The invention relates to a preparation method of a modifier for a hydration product of Portland cement, the modifier mainly comprises the following raw materials: a polyphenol compound, a polyamine compound, a polysaccharide compound, an amino silane compound and the like, and the polyphenol compound is coupled under the action of oxidation and catalysis to form a dimer; the preparation method comprises the following steps: carrying out Michael addition reaction, connecting with a polyamine compound to form a polymer, respectively reacting with an amino silane compound and a modified polysaccharide compound, and grafting the amino silane compound and the modified polysaccharide compound on the polymer to obtain the Portland cement hydration product modifier. The Portland cement hydration product modifier prepared by the invention has the characteristics of simple and controllable process, wide raw material source, excellent performance and the like, can generate intercalation and other effects with cement hydration products after being doped into cement paste, gives full play to the advantage of internal and external synergy, fundamentally changes the characteristics of the hydration products, and has a good application prospect. The effects of mechanical enhancement, shrinkage inhibition and the like of the concrete are realized on the macroscopic level, and the concrete shows excellent application potential and development prospect.
本发明涉及硅酸盐水泥水化产物改性剂的制备方法，其原料主要包括多酚类化合物、多胺类化合物、多糖类化合物、氨基类硅烷化合物等，多酚类化合物在氧化和催化的作用下发生偶联形成二聚体，通过迈克尔加成反应与多胺类化合物连接形成聚合物，再分别与氨基类硅烷化合物和改性多糖类化合物反应将其接枝在聚合物上，得到硅酸盐水泥水化产物改性剂。本发明制备的硅酸盐水泥水化产物改性剂具有工艺简便可控、原料来源广泛、性能优异等特点，掺入水泥浆体中能够与水泥水化产物发生插层等作用，充分发挥其内外协同的优势，从根本上改变水化产物的特性，在宏观层面上实现混凝土的力学增强和抑制收缩等效果，表现出优良的应用潜力及发展前景。
Preparation method of Portland cement hydration product modifier
The invention relates to a preparation method of a modifier for a hydration product of Portland cement, the modifier mainly comprises the following raw materials: a polyphenol compound, a polyamine compound, a polysaccharide compound, an amino silane compound and the like, and the polyphenol compound is coupled under the action of oxidation and catalysis to form a dimer; the preparation method comprises the following steps: carrying out Michael addition reaction, connecting with a polyamine compound to form a polymer, respectively reacting with an amino silane compound and a modified polysaccharide compound, and grafting the amino silane compound and the modified polysaccharide compound on the polymer to obtain the Portland cement hydration product modifier. The Portland cement hydration product modifier prepared by the invention has the characteristics of simple and controllable process, wide raw material source, excellent performance and the like, can generate intercalation and other effects with cement hydration products after being doped into cement paste, gives full play to the advantage of internal and external synergy, fundamentally changes the characteristics of the hydration products, and has a good application prospect. The effects of mechanical enhancement, shrinkage inhibition and the like of the concrete are realized on the macroscopic level, and the concrete shows excellent application potential and development prospect.
本发明涉及硅酸盐水泥水化产物改性剂的制备方法，其原料主要包括多酚类化合物、多胺类化合物、多糖类化合物、氨基类硅烷化合物等，多酚类化合物在氧化和催化的作用下发生偶联形成二聚体，通过迈克尔加成反应与多胺类化合物连接形成聚合物，再分别与氨基类硅烷化合物和改性多糖类化合物反应将其接枝在聚合物上，得到硅酸盐水泥水化产物改性剂。本发明制备的硅酸盐水泥水化产物改性剂具有工艺简便可控、原料来源广泛、性能优异等特点，掺入水泥浆体中能够与水泥水化产物发生插层等作用，充分发挥其内外协同的优势，从根本上改变水化产物的特性，在宏观层面上实现混凝土的力学增强和抑制收缩等效果，表现出优良的应用潜力及发展前景。
Preparation method of Portland cement hydration product modifier
硅酸盐水泥水化产物改性剂的制备方法
LIU XIAO (author) / ZHANG YUHANG (author) / XIAO YANZHEN (author) / LEE SI WOO (author) / SUN XINRU (author) / WANG SIMAI (author) / NIU XIAOKAI (author) / XIE ZHITIAN (author)
2024-12-13
Patent
Electronic Resource
Chinese
Heat of hydration of Portland cement
| Engineering Index Backfile | 1935
Chemically modified hydration of Portland cement
| TIBKAT | 1994
Preparation and properties of low hydration heat Portland cement
| British Library Online Contents | 1998
An "unmodel" of Portland cement hydration
| British Library Conference Proceedings | 2006