Slow-release polycarboxylate superplasticizer and preparation method thereof
Abstract
According to the slow-release polycarboxylic acid water reducing agent and the preparation method thereof, the water reducing agent inner core is wrapped in the protective shell composed of components such as nano silicon dioxide, water reducing agent molecules can be slowly released, and the release rate does not suddenly increase; the release speed is not obviously changed at high temperature, so that the slump retaining agent still has better long-time slump retaining capacity in a high-temperature environment, and the fluidity change of the mixed concrete is more stable and controllable. In addition, the protective shell is generated while the polycarboxylate superplasticizer is synthesized, the steps are simple, and the whole preparation process is safe, reliable and environmentally friendly. The slow-release polycarboxylate superplasticizer is high in adaptability to concrete, relatively low in sensitivity to mud contained in raw materials and moderate in slow release rate, and the problems that the slump retaining time is shortened and the workability of mixed concrete becomes poor due to the fact that carboxyl is released too quickly in an alkaline environment of the concrete are solved to a great extent.
Inventors 3
- Qiu, Ying
- Ni, Rui
- Ma, Binbin
Inventors are linked to an Aachen author when surname and first name match exactly one author.
Applicants
- 江苏亚琛材料科技有限公司
- Jiangsu Aachen Material Tech Co Ltd
Cited papers 0 in the database
No literature citations.