polycarboxylate-based plasticizer sodium naphthalene
polycarboxylate-based plasticizer sodium naphthalene
polycarboxylate-based plasticizer sodium naphthalene
polycarboxylate-based plasticizer sodium naphthalene
polycarboxylate-based plasticizer sodium naphthalene
effects and mechanism of superplasticizers and precursor

Effects and mechanism of superplasticizers and precursor

Naphthalene- and polycarboxylate-based superplasticizers have positive effects. ? Efficacy of polycarboxylate-based plasticizers is sensitive to precursor proportion. ? Adsorption of plasticizer and its interaction with activator are affecting factors. ? Efficacy is judged by a combination of particles¡¯ interaction and plasticizers¡¯ effect. ?

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different effects of nsf and pce superplasticizer on

Different Effects of NSF and PCE Superplasticizer on

One is polysulfonated-based (e.g., naphthalene), the other is a newer generation and more popularly used: polycarboxylate-based [ 1 ]. Naphthalene Sulfonate Formaldehyde (NSF) polycondensate is a linear polymer, while Polycarboxylate Ether (PCE) has comb copolymers with an adsorbing backbone and nonadsorbing side chains.

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polycarboxylate superplasticizers - concrete construction

Polycarboxylate Superplasticizers - Concrete Construction

Just as the application of naphthalene-based admixtures starting in the 1970s enabled significant improvements in the numerous engineering properties of plastic and hardened concrete, polycarboxylates have further extended the performance of concrete mixtures.

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efficiency of different superplasticizers and retarders on

Efficiency of Different Superplasticizers and Retarders on

They found that polycarboxylate-based SP was more effective for mixtures with high water content (i.e., water/precursor ¡Ý 0.36), while naphthalene-based SP was more effective for mixtures with low water content (i.e., water/precursor ¡Ü 0.36). Retarders (RTs) are often added to OPC-based concrete to increase its setting time [38,39,40,41,42

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research progress on polycarboxylate based superplasticizers

Research progress on polycarboxylate based superplasticizers

1. Introduction. Polycarboxylate ether/ester (PCE) superplasticizer is a new generation of superplasticizer following the development of poly (naphthalene sulfonate) (PNS), poly (melamine sulfonate) (PMS) and acetone formaldehyde sulfite (AFS) superplasticizers.

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sulphonated naphthalene formaldehyde condensate

Sulphonated Naphthalene Formaldehyde Condensate

Once the desired degree of polymerization has been obtained (the molecular weight being time-dependent), the third and last step of PNS production consists of neutralizing the polymethylene naphthalene sulphonic acid with sodium hydroxide.

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synthesis and properties of a polycarboxylate

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

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effect of naphthalene-based superplasticizer

Effect of Naphthalene-Based Superplasticizer

In order to study what the effect of superplasticizers on the setting time, fluidity and compressive strength of calcium sulfoaluminate cement (CSA) a naphthalene-based superplasticizer (BNS) and a polycarboxylic acid superplasticizer (PC) were selected to interact with CSA pastes and ye¡¯elimite, respectively.

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buildings | free full-text | the impact of plasticizers on

Buildings | Free Full-Text | The Impact of Plasticizers on

The results of determining the relative deformation showed that the introduction of plasticizer additives based on polycarboxylate esters and naphthalene formaldehydes contributes to an increase in the relative deformation, which indicates an intensification of the alkali-silicate reaction. If the deformation exceeds 0.1%, then the aggregate is

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efficiencies of super-plasticizer on rheology properties of

Efficiencies of Super-Plasticizer on Rheology Properties of

This study investigates the effects of five different super-plasticizers (SPs): melamine sulfonate (M), naphthalene-based (N), lignosulfonate (L), polyether-type (P-I), and polyester-type polycarboxylate super-plasticizers (P-II), on fly ash through fluidity, viscoelasticity, inter-microstructure, and mechanism of action (adsorption and zeta) ex...

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