Polycarboxylate superplasticizer is a new kind of high-performance water-reducer, as a next generation superplasticizer in nowaday world, and it possesses high water-reducing ratio, high slump loss resistance, lower alkali content and green environmental protection.

According to principles of molecular structure design, th paper chose maleic anhydride (MA), (methoxy) polyethylene glycol (MPEG/PEG), sodium vinyl sulfonate (SVS), methacrylic acid (MAA) as raw material and synthesized maleic anhydride series polycarboxylate superplasticizer with carboxyl groups (-COOH), sulfonate groups (-SO3-), polyoxyethylene ether groups [-(O-CH2-CH2)n-], etc.

The rules are put forward that TW-PS polycarboxylic acid superplasticizer can improve performance of C50 as-cast-finish concrete.

Synthesis and application properties of polycarboxylate superplasticizers

In this paper,allylic polycarboxylate superplasticizer was directly polymerized using acrylic polyoxyethylene glycols(APEG),maleic anhydride and methyl acrylate as monomers and ammonium persulfate as initiator.

Study was carried out on effects of inhibitor type and amount, molar ratio of AA to MPEG, solvent amount, esterification temperature and reaction time on esterification ratio and performance of polycarboxylate superplasticizer.

The new step of polycarboxylic acid water reducer could restrain the dirt in the concrete;

Different water reducers are applied into the ceramic material and the impact on dispersion, fluidity and suspension of clay mud mixed with comb-shaped and linear polycarboxylic acid water reducers and traditional STPP is researched.

The polycarboxyl water-reducing was synthesized by way of orthogonal testing.

Plastic shrinkage and crack resistance of high-strength concrete mixed with polycarboxylate superplasticizer

Study on effect rule of side-chain structure of polycarboxylate superplasticizer upon cement hydration

The hydrated cement samples with polycarboxylate superplasticizer have been measured by SEM,IR,XRD,pH and conductivity.