Synthesis and Properties of a Polycarboxylate
The well designed comb-typed polycarboxylate superplasticizer has been proved as an efficient water reducing agent to improve the concrete's workability. However, the reliability of such an architecture is still challenged due to delay of cement hydration and the resulting weak early-age compressive strength of the concrete.
Progresses in Synthesis of Polycarboxylate Superplasticizer
It was shown in Fourier transform infrared spectroscopy (FITR) that the molecular structure of modified polycarboxylate superplasticizer (MPCE) contained sulfonic acid groups, carboxylic acid groups, polyethylene oxide vinyl groups, and other groups and had comb-shaped molecular structure.
ODWH6XSHUSODVWLFL]HU - Institute of Physics
A highly adaptable polycarboxylate superplasticizer (PCE-2) was synthesized by free radical copolymerization in aqueous solution with isoprenol polyoxyethylene ether as macromonomer, acrylic acid and hydroxyethyl acrylate and 2-methacryloyloxyethyl phosphate as unsaturated monomers, mercaptopropionic acid as chain transfer agent, hydrogen
Synthesis and characterization of a novel early‐strength
A novel early-strength type polycarboxylate superplasticizer (PCE) was synthesized by a new design of molecule structure such as introducing long polyoxyethlene side chains, functional monomer (2-acrylamide-2-methylpropanesulfonic acid), and optimizing monomer composition.
superplasticizer PCE
Superplasticizeryang digunakan adalah jenis polycarboxylate ethersdari PT. Normet dengan merk Tamcem 60RA. 3.5.2 Peralatan Peralatan penelitian yang di perlukan untuk melaksanakan berbagaipengujian dalam penelitian ini terdiri dari : 1. Timbangan analitis 25 kg dengan skala 100 gram.
- What is polycarboxylate superplasticizer (PCE)?
- Polycarboxylate Superplasticizer (PCE) is a water-soluble concrete additive used to reduce water to cement ratio without affecting the workability of the mixture. PCE increases protection from slumping, then increases the slump retention since cement loses workability with time. PCE increases the structure’s strength after construction.
- What is a polycarboxylate ether superplasticizer?
- The polycarboxylate ether superplasticizer is an additive commonly used in concrete engineering and has a wide range of applications. The PCE based admixture can significantly reduce the amount of cement and improve the fluidity and pumpability of concrete while ensuring the strength and durability of concrete.
- Can polycarboxylate based superplasticizer improve the crack resistance of concrete?
- The polycarboxylate based superplasticizer can improve the crack resistance of concrete. After adding an appropriate amount of water reducing agent in concrete, the internal structure of the concrete can be improved and the contraction and cracking of concrete can be reduced.
- What are the advantages of polycarboxylate based superplasticizer?
- Low dosage and high water reduction rate. The water reduction rate of polycarboxylate based superplasticizer can be as high as 45%, which can be used to prepare high-strength and high-performance concrete. Small loss when slump is light.
- What is PCE superplasticizer?
- PCE superplasticizer is a high-performance water reducing agent that integrates many functions such as high water reduction, high collapse retention, reinforcement, shrinkage, and environmental protection. It is also an ideal admixture for preparing high-strength and high-performance concrete.
- Does polycarboxylate superplasticizer have air entraining effect?
- The polycarboxylate superplasticizer has a certain air-entraining effect because it can reduce the liquid-gas interfacial tension. When adding water reducing agent to concrete mixture, it can not only be adsorbed on the solid-liquid interface, but also easily form many tiny air bubbles in the concrete mixture.
