Synthesis, characterization and mechanism of polycarboxylate
The comprehensive performances of each slump-retaining polycarboxylate superplasticizer were analyzed and compared with that of different molecular structure. The Gel Permeation Chromatography (GPC), surface tension, zeta potential, adsorption behavior, cement paste fluidity and application performance in concrete were measured.
Synthesis and performances of polycarboxylate superplaticizer
The molecular structure of superplasticizer was determined by Fourier Transform Infrared Spectroscopy (FT-IR) and Gel Permeation Chromatography (GPC), respectively. The adaptability of clays, Zata potential, adsorption behavior and application performance in concrete were measured.
Synthesis, characterization and mechanism of polycarboxylate
A slowly-released polycarboxylate superplasticizer with high slump retention was obtained at room temperature by using Isoamyl enol polyoxyethylene ether (TPEG), 2-hydroxyethyl acrylate (HEA
Synthesis, characterization and mechanism of polycarboxylate
polycarboxylate superplasticizer was synthetically analyzed from the point of the synthesis of the polycarboxylate superplaticizers. The adsorption and dispersion mechanism of the two kinds of slump-
Polycarboxylate Superplasticizer (PCE) For Concrete
Polycarboxylate superplasticizer (PCE), also known as polycarboxylate ether superplasticizer, is a new generation of high-performance concrete admixture. It is a water reducing agent with excellent performance that integrates water reduction, slump protection, reinforcement, shrinkage and environmental protection.
- Does polycarboxylate superplasticizer have good dispersing performance?
- And the slump retention mechanism was analyzed. The results show that the polycarboxylate superplaticizer with hydroxyethyl group prepared in this study has good dispersing performance and high slump retention capability for concrete. Test results of concretes with different slump-retaining polycarboxylate superplasticizers.
- What is a slow-release polycarboxylate superplasticizer (PCT)?
- Ester-based slow-release polycarboxylate superplasticizers (PCT) exhibit high fluidity and a good slump retention effect on concrete slurries.
- Which polycarboxylate superplasticizer has better slump retention capacity?
- The results show that under the same test conditions and the same dosage, the synthesized polycarboxylate superplasticizer PC-1 has better slump retention capability and compressive strength than PC-2.
- Why are polycarboxylate superplaticizers used in concrete engineering?
- 1. Introduction Polycarboxylate superplaticizers have been increasingly widely used in concrete engineering because of their low admixing volume, high water reducing rate, good slump retention capability, adjustable molecular structure, and environmental protection.
- Do Polycarboxylate ether/ester superplasticizers affect concrete performance?
- Polycarboxylate ether/ester (PCE) superplasticizers are widely used due to their molecular structural designability, low dosage and high efficiency. However, their high sensitivity and strong interactions with clays in concrete reduce their dispersion and water-reduction capability, which can affect the performance of concrete seriously.
- What is polycarboxylate superplasticizer (PCE)?
- As one important auxiliary, superplasticizers have attracted lots of attention in the concrete and building materials field. Specially, polycarboxylate superplasticizer (PCE) has been widely applied due to its relatively low doping amount, high water reducing rate and environmental friendliness property.
