How to increase the hydration degree of CA - The influence of CA particle fineness

Journal article


Publication Details

Author(s): Klaus S, Neubauer J, Götz-Neunhoeffer F
Journal: Cement and Concrete Research
Publisher: Elsevier
Publication year: 2015
Volume: 67
Pages range: 11-20
ISSN: 0008-8846


Abstract


The reaction of a sample with mainly coarse particles of CA (d(50) = 50 mu m) is characterized by a low hydration rate and only 34 rel.-% of CA dissolved after 22 h. Whereas in a very fine CA-sample (d(50) = 4 mu m) hydration starts delayed but then shows the highest hydration rate and a dissolution of 62 rel.-% CA. The behaviour is explained by the coverage of CA-particles with a dense hydrate layer of C(2)AH(x) and AH(x). This reacted CA-rim is supposed to have the same thickness for different sized CA-particles. Optimization of Gauss distribution curves, which were applied to simulate a more realistic particle size distribution, leads to a reacted rim thickness of 1.3 mu m until reaction is stopped. (C) 2014 Elsevier Ltd. All rights reserved.



FAU Authors / FAU Editors

Götz-Neunhoeffer, Friedlinde Prof. Dr.
Lehrstuhl für Mineralogie
Klaus, Sebastian
Lehrstuhl für Mineralogie
Neubauer, Jürgen apl. Prof. Dr.
Lehrstuhl für Mineralogie


How to cite

APA:
Klaus, S., Neubauer, J., & Götz-Neunhoeffer, F. (2015). How to increase the hydration degree of CA - The influence of CA particle fineness. Cement and Concrete Research, 67, 11-20. https://dx.doi.org/10.1016/j.cemconres.2014.08.001

MLA:
Klaus, Sebastian, Jürgen Neubauer, and Friedlinde Götz-Neunhoeffer. "How to increase the hydration degree of CA - The influence of CA particle fineness." Cement and Concrete Research 67 (2015): 11-20.

BibTeX: 

Last updated on 2018-08-08 at 17:40