Syntheses of polycarboxylate superplasticizers: Microwave
An eco-friendly and high-efficient preparation approach to synthesizing polycarboxylate superplasticizers (PCE) co-polymers based on microwave induction was described. . Meanwhile, a series of detailed comparative studies about the effects of microwave induction and conventional thermal inductions on the conversion rate and reactivity ratio in the polymerization reaction, molecular structure
Technical optimization and life cycle assessment
With the rapid development of the construction industry, it is necessary to synthesize environment-friendly functional polymers, especially when developing “green” construction industry types. Herein a novel solid-state polycarboxylate superplasticizer (PCE) with low energy-consumption was designed and synthesized.
ConstraChem - Polycarboxylate superplasticizer
SLUMP RETENTION SUPERPLASTICIZER. It is a new generation superplasticizer for concrete. It contains polycarboxylate ether polymers and is specially formulated for ready-mix concrete where slump retention, high strength and durability are required in hot climates. It is chloride-free, meets ASTM C 494 requirements for Type F & G. Learn More
Adsorption and dispersion capability of polycarboxylate-based
Adsorption of polycarboxylate ester/ether (PCE) superplasticizer on the cementitious materials and steric effect of its side chain determine to its dispersion and water-reducing capability. This paper reviews the effect of molecular structure of PCE and characteristics of cementitious system on its adsorption behavior, and build up the
DQG,WV Fang et al. 3URSHUWLHV Polyoxyethylene Ether Type
reduction rate under the condition of low parameters, polycarboxylate superplasticizer has become one of the indispensable admixtures in the market. Polycarboxylate superplasticizer is mainly prepared by the reaction of polyether macromonomer with the acrylic acid containing hydrophilic group in unsaturated double bonds and its derivatives. It
- How are gradient and block Polycarboxylate ether superplasticizers synthesized?
- In this paper, gradient and block polycarboxylate ether superplasticizers (PCEs) composed of allyl alcohol polyoxyethylene ether macromonomer and acrylic acid were synthesized via aqueous reversible addition-fragmentation chain transfer (RAFT) polymerization.
- What is Polycarboxylate ether (PCE)?
- Polycarboxylate ether (PCE) is a new generation of superplasticizer, which was invented in 1981 , following the development of conventional lignosulfonate water reducing agent, naphthalene, and melamine-based superplasticizers.
- What is polycarboxylate superplasticizer (PCE)?
- 1. Introduction Polycarboxylate superplasticizer (PCE), when applied in cement-based materials such as cement paste, mortar and concrete, can significantly improve the workability, strength and durability of the material ( Zheng et al., 2019) by dispersing agglomerated cement particles ( Zhang et al., 2020 ).
- Is solid-state polycarboxylate superplasticizer better than liquid-state PCE?
- Herein a novel solid-state polycarboxylate superplasticizer (PCE) with low energy-consumption was designed and synthesized. In industrial application, solid-state PCE has exhibited better cement paste fluidity and concrete slump compared to liquid-state PCE.
- Why are polycarboxylate superplasticizers important in concrete admixtures?
- 1. Introduction In modern construction industry, polycarboxylate superplasticizers (PCEs) have become one of the indispensable components in concrete admixtures because they can obviously improve the performance of various types of concrete in a low water to cement ratio (w/c) and lower dosage , .
- 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.
