In situ 1H-TD-NMR: Quantification and microstructure development during the early hydration of alite and OPC

Ectors D, Götz-Neunhoeffer F, Hergeth WD, Dietrich U, Neubauer J (2016)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Cement and Concrete Research Elsevier

Publisher: Elsevier Ltd

Book Volume: 79

Pages Range: 366-372

DOI: 10.1016/j.cemconres.2015.10.011

Abstract

An in situ framework for H time-domain nuclear magnetic resonance analysis was developed and applied on alite and OPC hydration. Highly time-resolved quantitative data on the evolution of proton reservoirs during hydration was collected for up to 40 h. Reservoirs could be clearly assigned to mobile (mix water), intermediate (C-S-H) and rigid fractions (CH, ettringite). Comparison of determined fraction quantities with data from in situ XRD measurements and heat flow calorimetry show very good agreement. During alite hydration at 23°C, a bulk water content of 4 HO in CSH was confirmed. T2 relaxation times of the mobile fraction shifted towards shorter times from the start of the main reaction until the maximum of the heat flow. Microstructure evolution is nearly finished at that point in time. T2 relaxation times are severely shortened for iron-containing OPC, but are still evaluable.

Authors with CRIS profile

Dominique Ectors Lehrstuhl für Mineralogie Friedlinde Götz-Neunhoeffer Naturwissenschaftliche Fakultät Jürgen Neubauer Naturwissenschaftliche Fakultät

Involved external institutions

Wacker Chemie AG

Germany (DE)

How to cite

APA:

Ectors, D., Götz-Neunhoeffer, F., Hergeth, W.D., Dietrich, U., & Neubauer, J. (2016). In situ 1H-TD-NMR: Quantification and microstructure development during the early hydration of alite and OPC. Cement and Concrete Research, 79, 366-372. https://doi.org/10.1016/j.cemconres.2015.10.011

MLA:

Ectors, Dominique, et al. "In situ 1H-TD-NMR: Quantification and microstructure development during the early hydration of alite and OPC." Cement and Concrete Research 79 (2016): 366-372.

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