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.
Fatigue Behavior of Ultrahigh-Performance Fiber-reinforced
The materials used to produce UHPFRC in this study included Portland cement, calcium carbonate (CaCO3), silica fume, natural river sand, a polycarboxylate-based high-range water-reducing superplasticizer (SP), steel fibers and water. Table 1 summarizes the mix proportions of the UHPC produced in this study.
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
Adsorption properties of polycarboxylate ether-based
The cement dispersion performance of a polycarboxylate (PCE)-based superplasticizer is highly related to their adsorption behaviors as a function of time. This study evaluated effects of PCEs on rheological properties of cementitious materials. First, characteristics of PCEs were characterized via permeation chromatography (GPC) and Fourier-transform infrared spectrometry (FT-IR). The
Synthesis and Properties of a Polycarboxylate
Polycarboxylate superplasticizers (PCEs) are comb-shaped polymers with an anionic backbone and several nonionic pendant chains, which typically are comprised of polyethylene glycols. In this study, the synthesis of a new type of superplasticizer is presented, which does not exhibit the typical comb-shaped form of PCEs but is built up from a linear polyetheramine and a hyperbranched
- 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 polycarboxylate superplasticizer (PCE)?
- Polycarboxylate superplasticizer (PCE), an important type of concrete admixture, has been widely applied in various engineering projects, which greatly promotes the concrete technology and the building construction modernization.
- What are the different types of polycarboxylate superplasticizers?
- Welcome to contact us. As a professional PCE superplasticizer manufacturer in China, Kingsun can provide three different types of polycarboxylate superplasticizers for you, they are PCE powder, PCE (High Water Reduction) liquid, PCE (High Slump Retention) liquid.
- 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.
- Can superplasticizer improve fluidity of fresh concrete?
- For the second technique, there are many studies on this, whereas it cannot thoroughly solve the practical problems , , , since good fluidity of fresh concrete is mainly contributed by strong adsorption and dispersive capacity of superplasticizer.
- What is PCE superplasticizer?
- As an ideal admixture for the ready-mixed concrete industry, PCE superplasticizer has the ability to work with a low water/cement ratios and still obtain extended slump retention to make high-quality concrete.
