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Journal of Materials Science

Erschienen in:

01.02.2018 | Composites

Hydration kinetics of Portland cement in the presence of vinyl acetate ethylene latex stabilized with polyvinyl alcohol

verfasst von: Yu Jin, Dietmar Stephan

Erschienen in: Journal of Materials Science | Ausgabe 10/2018

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Abstract

Three vinyl acetate ethylene (VAE) latices and incorporated polyvinyl alcohol (PVOH) were investigated. Two of the VAE latices were stabilized by PVOH, while the third was stabilized with an anionic surfactant. The influence of VAE and PVOH on cement hydration was studied by means of isothermal heat flow calorimetry, ICP-OES and in situ XRD measurement. All of the latices prolonged the induction period with an increase in the polymer/cement ratio, whereas the latex stabilized by PVOH hardly influenced the hydration of the silicate phase. Instead, a strong secondary exothermic peak was observed. Based on the in situ XRD analysis, the peak was attributed to the rapid formation of ettringite. Furthermore, the concentration of SO₄²⁻ in the pore solution was found to have reduced in the presence of polymers in the first hours of the hydration.

Vorheriger Artikel Conductive hybrid polymer composites based on recycled carbon fibres and carbon nanofillers

Nächster Artikel Comparison of probabilistic models for stress rupture failure in continuous unidirectional fiber composite structures

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Titel: Hydration kinetics of Portland cement in the presence of vinyl acetate ethylene latex stabilized with polyvinyl alcohol
verfasst von: Yu Jin
Dietmar Stephan
Publikationsdatum: 01.02.2018
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 10/2018
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-018-2074-1

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