Sludge-resistant polycarboxylate superplasticizer and new development trend of polycarboxylate superplasticizer

Sludge-resistant polycarboxylate superplasticizer and new development trend of polycarboxylate superplasticizer

Keywords
Anti-mud polycarboxylate superplasticizer

As the latest generation of concrete water reducer, polycarboxylate superplasticizer has the advantages of high water reducing rate, low shrinkage rate and low energy consumption rate, and can be widely used in large buildings, high-speed railways, cross-sea bridges, super-long tunnels, sea dams and many other projects.
As we all know, polycarboxylate superplasticizer is extremely sensitive to the soil content in concrete materials, but due to the high intensity of domestic infrastructure, high-quality river sand is on the verge of exhaustion.Therefore, it is urgent to solve the problem of soil resistance of polycarboxylic acid.At present, the problem of mud resistance is mainly solved by optimizing the polymer structure of polycarboxylic acid and introducing functional groups.
Polycarboxylate superplasticizer has unlimited structure and performance design space in theory, and various types of polycarboxylate superplasticizers, such as slump retention, early strength and shrinkage reduction, can be synthesized through molecular structure design.
In addition, by adding a small amount of slow-release polycarboxylate superplasticizer, the dispersibility and dispersion retention of cement particles can be greatly improved, so as to ensure that the concrete material still maintains the advantages of high strength, high water reducing rate, high dispersibility and the like under the condition of high mud content.