Influence of sulfates content in cement on the
The wide variety of formulations in commercial PCE admixtures however is largely responsible for the present incomplete understanding of their effect on rheology hydration and microstructure of
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Progress on Concrete AdmixturesSure Chem
Effects of PCEs with various carboxylic densities and functional groups on the fluidity and hydration performances of cement paste. Effect of PCE-type superplasticizer on early-age behaviour of ultra-high performance concrete (UHPC
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Correlation between setting heat evolution and
comparable flow performance low charge PCE retards setting more than high charge PCE. The paper furthermore points out that there is no significant influence of the polymer type or amount on the early deformations. Since type and amount strongly affect the hydration it is demonstrated that early setting causes higher strain after the final set.
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Effects of Organosilane-modified PCE on the Fluidity and
Effects of organosilane-modified PCE (OS-PCE) on the fluidity and the hydration properties of cement-fly ash (FA) composite binder were systematically analyzed. The experimental results show that OS-PCE possesses respectively 36.98 and 36.67 higher saturated adsorption amount on cement and FA in comparison with ordinary PCE and can contribute to higher fluidity of cement-FA composite binder.
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Influence of emulsifier content on cement hydration and
The objective of this research was to investigate the influence of a cationic emulsifier on the kinetics of cement hydration and on the overall mechanical performance of bitumen emulsion mortar as an essential structural component of cold asphalt mixtures within a 28-day curing period. This influence was investigated as a function of emulsifier content and bitumen grade selected to cover
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Influence of Integration of Phase Change Materials on
Influence of PCE on Rheological and Hydration Performances of Cement Paste Journal of Materials in Civil Engineering January 2020 Effect of Nano-SiO2 on the Mechanical Properties Microstructure and Hydration Process of Cementitious Materials Incorporating Hydrophobic Admixture
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Influence of Different Accelerators on the Rheology and
Sep 08 2019 · Accelerators influence the hydration of cementitious materials and thus the rheological properties over the course of time and the setting. In this paper the influence of different accelerators on the rheology and early hydration of cement paste as well as the interaction of accelerator and PCE
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The rheological and mechanical properties of commerically available denture adhesive hydrogels were found to be critically dependent on both the formulation of the adhesives and their hydration level. Clear progression of phase separation was observed in hydrated denture adhesives as hydration increased and changed the
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Hydration Kinetics of Tri-calcium Silicate in the Presence
Influence of PCE on Rheological and Hydration Performances of Cement Paste. Journal of Materials in Civil Engineering 2020 32 (3) Effects of the molecular architecture of comb-shaped superplasticizers on their performance in cementitious systems.
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Influence of Polycarboxylate Superplasticizer on
Jul 12 2018 · Molecular structures of polycarboxylate (PCE) superplasticizer significantly affect the rheological properties of cement paste. Consequently we employed self-synthesized PCE copolymers with different carboxylic densities to investigate their influence on the rheological behavior of cement paste. Three typical rheological models were applied to analyze the rheological properties including
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Effectiveness of Stabilising Agents Influence of the Solid
Influence of PCE in limestone filler-STA systems •In presence of PCE the influences of both STAs on yield stress diminish. •At the same time the plastic viscosity remains higher than in the reference system. 0 2 4 6 8 10 12 14 16 18 0.00 0.10 0.20 0.30 t 0 Solid PCE content by mass of LSF Limestone filler PCE F = 0.5 Water 0.5
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Effect of PCE superplasticizers on rheological and
A variety of polycarboxylate ether (PCE)-based superplasticizers are commercially available. Their influence on the rheological retention and slump loss in respect of concrete differ considerably. Fluidity and slump loss are the cardinal features responsible for the quality of concrete. These are related to the dispersion of cement particles and the hydration process which are greatly
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Research Collection
The study on the PCE influence on plain cement suspensions shows that in terms of workability the charge density of the PCE is of major importance. their PCE adsorption ability rheological behaviour and change of zeta potentials in presence hydration is governed by the tricalciumaluminate content and the availability of sulfate.
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Influence of Integration of Phase Change Materials on
Influence of PCE on Rheological and Hydration Performances of Cement Paste Journal of Materials in Civil Engineering January 2020 Effect of Nano-SiO2 on the Mechanical Properties Microstructure and Hydration Process of Cementitious Materials Incorporating Hydrophobic Admixture
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Influence of Polycarboxylate Superplasticizer on
Jul 12 2018 · Molecular structures of polycarboxylate (PCE) superplasticizer significantly affect the rheological properties of cement paste. Consequently we employed self-synthesized PCE copolymers with different carboxylic densities to investigate their influence on the rheological behavior of cement paste. Three typical rheological models were applied to analyze the rheological properties including
Get PriceHydration Hardening Mechanism and Performance of Tuff
AbstractUsing admixtures to replace part of cement can effectively reduce environmental pollution. Many concrete gravity dams have been planned for Tibet where the resource of fly ash (FA) is scar
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Influence of sulfates content in cement on the
The wide variety of formulations in commercial PCE admixtures however is largely responsible for the present incomplete understanding of their effect on rheology hydration and microstructure of
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Surface and Intercalation Chemistry of Polycarboxylate
Yan He Xiong Zhang Shuhua Liu R.D. Hooton Tao Ji Yaning Kong Impacts of sulphates on rheological property and hydration performance of cement paste in the function of polycarboxylate superplasticizer Construction and Building Materials 10.1016/jnbuildmat.2020.119428 256
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Effectiveness of Stabilising Agents Influence of the Solid
Influence of PCE in limestone filler-STA systems •In presence of PCE the influences of both STAs on yield stress diminish. •At the same time the plastic viscosity remains higher than in the reference system. 0 2 4 6 8 10 12 14 16 18 0.00 0.10 0.20 0.30 t 0 Solid PCE content by mass of LSF Limestone filler PCE F = 0.5 Water 0.5
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Rheology setting and hydration of calcined clay blended
The impact on the rheology hydration and setting behaviour of blended cement pastes with two PCE-based superplasticisers is investigated using rotational viscometry isothermal calorimetry and ultrasound respectively. improving performance by increasing steric interactions.
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Effects of Organosilane-modified PCE on the Fluidity and
Jan 06 2021 · Effects of organosilane-modified PCE (OS-PCE) on the fluidity and the hydration properties of cement-fly ash (FA) composite binder were systematically analyzed. The experimental results show that OS-PCE possesses respectively 36.98 and 36.67 higher saturated adsorption amount on cement and FA in comparison with ordinary PCE and can contribute to higher fluidity of
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Interactions between PCE and different polysaccharides and
Hydration and Chemical Admixtures49Interactions between PCE and different polysaccharides and influences on the early hydration of cement W. Schmidt1 H. J. H. Brouwers2 H.-C. Kühne1 B. Meng1 1BAM Fed. Inst. for Materials Research and Testing Berlin Germany 2Eindhoven University of Technology Eindhoven Netherlands Abstract
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Eine einfache experimentelle Methode zur qualitativen
•Short performance retention Effect of PCE charge density on early hydration If a specific rheology is required the lower charged PCE will always slow down the hydration. Final setting time "Rheologische Messungen an mineralischen Baustoffen" 13 22. Kolloquium und Workshop Regensburg 2013 Effect of PCE charge density on early
Get PriceInfluence of hydration and starch digestion on the
Influence of hydration and starch digestion on the transient rheology of an aqueous suspension of comminuted potato snack food Michael W. Boehm a Frederick J. Warren b Jackson E. Moore a Stefan K. Baier c Michael J. Gidley bd and Jason R. Stokes ad
Get PriceHydration Kinetics of Tri-calcium Silicate in the Presence
Influence of PCE on Rheological and Hydration Performances of Cement Paste. Journal of Materials in Civil Engineering 2020 32 (3) Effects of the molecular architecture of comb-shaped superplasticizers on their performance in cementitious systems.
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Influence of Nanolimestone on the Hydration Mechanical
Jan 01 2016 · The influence of nanolimestone / nano CaCo 3 (NC) on the properties of ultrahigh-performance concrete (UHPC) cured at standard and heat conditions was experimentally investigated. The NC was used at ratios of 1 2 and 3 as partial mass replacement for cement. Incorporating NC accelerated the hydration reactions of UHPC because of the nucleation effect.
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Hydration dependent mechanical performance of denture
The rheological and mechanical properties of commerically available denture adhesive hydrogels were found to be critically dependent on both the formulation of the adhesives and their hydration level. Clear progression of phase separation was observed in hydrated denture adhesives as hydration increased and changed the
Get Price
Research Collection
The study on the PCE influence on plain cement suspensions shows that in terms of workability the charge density of the PCE is of major importance. their PCE adsorption ability rheological behaviour and change of zeta potentials in presence hydration is governed by the tricalciumaluminate content and the availability of sulfate.
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Influence of polycarboxylate side chains length on cement
PCE-1 30 1 082-1 102 35.000 500 PCE-2 46 0 95-1 16 50.000 3000 PCE-3 45 1 06-1 13 40.000 6000 The charge density (charge number/side chains number ratio) of the three polymers was selected in order to obtain similar water reduction capability. Cement pastes were prepared according to EN 196-3 with a w/c ratio of 0.35. All the PCEs were dosed at
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