Quantitative analysis of C–S–H in hydrating alite pastes by in-situ XRD

Journal article


Publication Details

Author(s): Bergold ST, Götz-Neunhoeffer F, Neubauer J
Journal: Cement and Concrete Research
Publisher: Elsevier
Publication year: 2013
Journal issue: 53
Pages range: 119-126
ISSN: 0008-8846
Language: English


Abstract


In this study about the early hydration of monoclinic alite, a method is presented that allows to follow the formation of the Calcium-Silicate-Hydrates directly and quantitatively over time. The combination of the PONKCS method [20] and the G-factor method [6] allowed the refinement and calibration of a C-S-H phase model which can be used for direct quantification of C-S-H in cementitious pastes. The comparison between the heat flow measured by calorimetry and the heat flow calculated from the phase development of C-S-H revealed that C-S-H formation starts later than is indicated by the measured heat flow. It is therefore assumed that the silicate reaction proceeds the following way: A not XRD-detectable C-S-H phase is precipitated which then evolves into a long-range ordered, XRD-detectable C-S-H. This C-S-H acts as a nucleation site for further long-range ordered C-S-H and leads to the acceleration of alite dissolution and direct formation of C-S-H. © 2013 Elsevier Ltd.



FAU Authors / FAU Editors

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


How to cite

APA:
Bergold, S.T., Götz-Neunhoeffer, F., & Neubauer, J. (2013). Quantitative analysis of C–S–H in hydrating alite pastes by in-situ XRD. Cement and Concrete Research, 53, 119-126. https://dx.doi.org/10.1016/j.cemconres.2013.06.001

MLA:
Bergold, Sebastian Tobias, Friedlinde Götz-Neunhoeffer, and Jürgen Neubauer. "Quantitative analysis of C–S–H in hydrating alite pastes by in-situ XRD." Cement and Concrete Research 53 (2013): 119-126.

BibTeX: 

Last updated on 2018-09-08 at 16:38