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Non-destructive moisture measurement in building materials using single-sided nuclear magnetic resonance

Author(s): Oliver Weichold, Sarah Hutt, Stephanie Keine, Robert Schulte Holthausen
Paper category: Proceedings
Book title: Proceedings on International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Moisture in Materials and Structures
Editor(s): Kurt Kielsgaard Hansen, Carsten Rode and Lars-Olof Nilsson
ISBN: 978-2-35158-178-0
e-ISBN: 978-2-35158-179-7
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 374 - 381
Total Pages: 8
Language : English

Abstract: Single-sided nuclear magnetic resonance (NMR) is a powerful, non-destructive tool to analyse the state of and changes in hydrogen-containing materials with depth-resolution. The most relevant hydrogen-containing material in civil engineering is water and, thus, single-sided NMR can be used to establish depth profiles of the water distribution in e. g. porous building materials such as concrete and to monitor the water transport in the pore system. This allows e. g. to assess the thickness of hydrophobic layers and changes due to ageing or environmental stresses. Detailed evaluation of the signal recorded by the NMR equipment provides information on the pore sizes and, more importantly, the changes in porosity due to concrete degradation. The article will briefly illustrate the principle of NMR measurements and then show its application for moisture measurement in the form of practical examples.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00

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