Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-efficient polycarboxylate retarding and water reducing agent for mass concrete
The invention provides a high-efficient polycarboxylate retarding and water reducing agent for mass concrete and a preparation method of the water reducing agent. The water reducing agent is high in water-reducing rate and good in slump keeping performance and has good compatibility with the cement, and the preparation process is simple. Carbic anhydride is taken as a polymeric monomer and introduced into a main polymer chain, the density of carboxyl is increased, the polycarboxylate water reducing agent synthesized in combination with a stable structural framework of norbornene can be adsorbed to surfaces of cement particles stably, and the water reducing rate of the water reducing agent is increased, and the slump keeping performance is improved.
High-efficient polycarboxylate retarding and water reducing agent for mass concrete
The invention provides a high-efficient polycarboxylate retarding and water reducing agent for mass concrete and a preparation method of the water reducing agent. The water reducing agent is high in water-reducing rate and good in slump keeping performance and has good compatibility with the cement, and the preparation process is simple. Carbic anhydride is taken as a polymeric monomer and introduced into a main polymer chain, the density of carboxyl is increased, the polycarboxylate water reducing agent synthesized in combination with a stable structural framework of norbornene can be adsorbed to surfaces of cement particles stably, and the water reducing rate of the water reducing agent is increased, and the slump keeping performance is improved.
High-efficient polycarboxylate retarding and water reducing agent for mass concrete
GUAN ZIXING (Autor:in) / SUN PEILING (Autor:in)
16.12.2015
Patent
Elektronische Ressource
Englisch
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2023