Effect of polymer latexes with cleaned serum on the phase development of hydrating cement pastes

Journal article
(Original article)


Publication Details

Author(s): Kong X, Pakusch J, Jansen D, Emmerling S, Neubauer J, Götz-Neunhoeffer F
Journal: Cement and Concrete Research
Publisher: Elsevier Ltd
Publication year: 2016
Volume: 84
Pages range: 30-40
ISSN: 0008-8846
Language: English


Abstract


The effects of polymer latexes on cement hydration were investigated by the combination of isothermal calorimetry, in-situ XRD and Cryo-SEM. Two model latexes with varied amounts of anionic charges were used for measurements after cleaned by dialysis to remove the serum components. This study confirms that in-situ XRD technique can be successfully adapted to hydrating cementitious systems in the presences of polymer latexes to quantitatively follow evolution of mineral phases involved in cement hydration. Results show that both polymers retard aluminate reaction and depress silicate reaction, by delaying the dissolution of CA, anhydrite and gypsum and consequently the formation of ettringite, and reducing the dissolution of CS and the formation of C-S-H. The anionic colloidal polymers exhibit more pronounced retardation effect on aluminate reaction than on silicate reaction due to stronger electrostatic interaction between the polymer particles and the positively charged aluminate phases. The more charged latex shows stronger retardation.



FAU Authors / FAU Editors

Götz-Neunhoeffer, Friedlinde Prof. Dr.
Naturwissenschaftliche Fakultät
Jansen, Daniel Dr.
Lehrstuhl für Mineralogie
Neubauer, Jürgen apl. Prof. Dr.
Naturwissenschaftliche Fakultät


External institutions
BASF SE
Tsinghua University


How to cite

APA:
Kong, X., Pakusch, J., Jansen, D., Emmerling, S., Neubauer, J., & Götz-Neunhoeffer, F. (2016). Effect of polymer latexes with cleaned serum on the phase development of hydrating cement pastes. Cement and Concrete Research, 84, 30-40. https://dx.doi.org/10.1016/j.cemconres.2016.02.013

MLA:
Kong, Xiangming, et al. "Effect of polymer latexes with cleaned serum on the phase development of hydrating cement pastes." Cement and Concrete Research 84 (2016): 30-40.

BibTeX: 

Last updated on 2018-19-11 at 13:50