Study on performance stability of Polycarboxylate
The effects of initial dropping temperature, amount of ferrous sulfate and dropping time on the performance of Polycarboxylate Superplasticizer were studied, and the measures to maintain the...
Progresses in Synthesis of Polycarboxylate Superplasticizer
Researchers developed excellent PCE with higher water reduction, good adaptability, and other good performances. At the same time, they have been trying to broaden sources of raw materials and synthetic processes, reduce the cost of production, and improve the quality of stability step by step.
Preparation and properties of polycarboxylate
The performance test results show that the product has high water-reducing ratio and better workability when applied to concrete, which can effectively retain the moisture in concrete and ensure...
Effect of sulfonation modification of polycarboxylate
The purpose of this research is to offer an avenue with great potentials to synthesize a novel PCE with excellent workability retention and sulfate tolerance in fresh cement pastes. This sulfonate-modified polycarboxylate superplasticizer has great potentials as a viable alternative to conventional PCE, especially in some harsh cement systems.
Strength evaluation by using polycarboxylate superplasticizer
Different proportions of polycarboxylate superplasticizer along with alkali activators ratios (Na 2 SiO 3: NaOH), water and temperature conditions were used to estimate the strength development. While, immobilization efficiency was determined by compressive strength and leaching behavior in two extractants i.e. deionized water and citric acid.
- 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.
- Does polycarboxylate superplasticizer alter dispersion and water-reducing effects?
- Polycarboxylate superplasticizer, synthesized using different methods, may alter dispersion and water-reducing effects. The synthesis of PCE involves creating a novel macromolecular monomer with a controllable molecular mass, adjustable lipophilic, and hydrophilic moieties, as outlined in this study.
- How are polycarboxylate superplasticizers synthesized?
- In this work, a series of polycarboxylate superplasticizers (PCEs) were synthesized via copolymerization using a novel macromonomer, ethylene–glycol monovinyl polyethylene glycol (EPEG). The molecular structures were modified by varying the side chain length, carboxylate density and integrating sulfonic group.
- What is a polycarboxylate ether superplasticizer?
- 1. Introduction Polycarboxylate-ether superplasticizers (PCEs) are nowadays widely used in cementitious systems to improve the workability of fresh mixes, the compactness and the strength of hardened concrete [, , , , , ].
- Does polycarboxylate superplasticizer (PCE-P) affect the dispersibility of cement paste?
- polycarboxylate superplasticizer (PCE-P). The study investigated the effects of different PCE types potential of cement paste. PCE-P, synthe- rate in cement to PCE synthesized at high temperatures. PCE-P exhibited an increased slump but had in surface tension, indicating a good dispersibility.
