Influence of a dialysed polymer latex on the hydration of OPC – A closer look into adsorption processes

Schreiber J, Wang J, Kong X, Neubauer J, Jansen D (2024)


Publication Type: Journal article

Publication year: 2024

Journal

Book Volume: 176

Article Number: 107390

DOI: 10.1016/j.cemconres.2023.107390

Abstract

The impact of a dialysed styrene acrylate copolymer on cement hydration was investigated. The retarding and depressing mechanism of the polymer particles on OPC hydration was examined via heat flow calorimetry, in-situ X-ray analysis and pore solution composition measurements. To ensure excessive polymer particles were remaining in the pore solution during the hydration, a high polymer-cement-ratio was chosen. It is found that the physical mechanism, the adsorption, is the most influential cause of the retardation and depression. Both aluminate and silicate reactions are strongly inhibited by the adsorption of polymer particles on hydrate phases. As long as polymer particles are found in the pore solution, newly forming surfaces are directly occupied by the latex particles, thus delaying the reaction. The OPC hydration is kinetically slowed down by polymer particle adsorption even though thermodynamically there is no hindrance for the hydration progression.

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APA:

Schreiber, J., Wang, J., Kong, X., Neubauer, J., & Jansen, D. (2024). Influence of a dialysed polymer latex on the hydration of OPC – A closer look into adsorption processes. Cement and Concrete Research, 176. https://dx.doi.org/10.1016/j.cemconres.2023.107390

MLA:

Schreiber, Jakob, et al. "Influence of a dialysed polymer latex on the hydration of OPC – A closer look into adsorption processes." Cement and Concrete Research 176 (2024).

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