Non-destructive measurement of chloride in concrete by NMR

Author(s): J.J.A.M. Borgharts, L. Pel
Paper category: Conference
Book title: 2nd International conference on Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. Van Breugel, Wei Sun, Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Pages: 487-495
Total Pages: 8
Language: English

Abstract: Accelerated corrosion due to presence of chloride in concrete is a major degradation mechanism. While various models are available to describe transport of chloride in (un)cracked concrete, there is lack of reliable data at hand to verify them. Here we present a Nuclear Magnetic Resonance (NMR) setup dedicated to quasi-simultaneously and nondestructively measure ¹H, ²³Na and ³⁵Cl. A preliminary study of one dimensional diffusion of 4 mol L⁻¹ NaCl solution in fired-clay brick shows promising results to monitor the spatial and temporal evolution of chloride transport in concrete.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00

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