Synthesis and optimization of a montmorillonite-tolerant
The chemical structure of the PCE was determined by FTIR spectroscopy (Nicolet Instruments, Inc., USA) using the KBr method in the range from 400 to 4000 cm –1. The hydrodynamic radii (R h) of the PCE were measured by DLS (Malvern Zetasizer Nano ZS) at 25°C. Test procedure Sample preparation
A polycarboxylate as a superplasticizer for montmorillonite
A novel polycarboxylate superplasticizer (PCE) with a long polyoxyethylene (PEO) chain and a terminal carboxylic group was synthesized from a modified polyether (SAE-IPEG) to increase its performance in cement. The molecular structure of the PCE was characterized by infrared spectroscopy and 1 H nuclear magnetic resonance (NMR) spectroscopy
Synthesis of sodium alginate-polycarboxylate superplasticizer
Its lamellar structure has a negative effect on an important concrete admixtures polycarboxylate superplasticizer (PCE). In this study, sodium alginate (SA), a polysaccharide, was grafted with an unsaturated amide, having a double bond structure, to synthesize the acrylamide modified sodium alginate (Ugi-SA) through the Ugi reaction.
Polycarboxylate Superplasticizers - Concrete Construction
Polycarboxylate Superplasticizers. Some 20 years ago, a new type of superplasticizer based on polycarboxylate polymers (PCE) was commercially introduced to the North American concrete construction industry. Just as the application of naphthalene-based admixtures starting in the 1970s enabled significant improvements in the numerous engineering
The Effect of Various Superplasticizers on Ultra High
Four different types of superplasticizers were used; two different PCE based superplasticizers from a leading manufacturer (PCE Name Brand 1, PCE Name Brand 2), one PNS superplasticizer, and one PCE superplasticizer (PCE Local Provider), both of which were provided by a local chemical provider.
- What is polycarboxylate superplasticizer (PCE)?
- Polycarboxylate Superplasticizer (PCE) represents the latest innovation in concrete admixture technology. Unlike traditional superplasticizers, PCE offers unparalleled control over concrete's rheological properties, making it essential in the production of high-performance concrete.
- Can polycarboxylate superplasticizer solve the problem of high viscosity?
- To solve the problem of high viscosity for fresh concrete especially high-grade concrete, a novel viscosity-reducing type of polycarboxylate superplasticizer (PCE) was synthesized based on innovative design of molecular structure, and also was characterized to confirm the designed molecular structure.
- 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.
- 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 are the advantages of polycarboxylate superplasticizers?
- From an engineering perspective, Polycarboxylate Superplasticizers offer several critical advantages. Firstly, the significant reduction in water-cement ratio achieved by PCE contributes to higher early and ultimate strength in concrete.
- 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.
