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µ-XRF – CHARACTERISATION OF CHLORIDE INGRESS AND SELF-HEALING IN CRACKED CONCRETE

Danner, Tobias; De Weerdt, Klaartje; Geiker, Mette Rica
Chapter, Conference object, Journal article
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Danner+et+al.+2017_%C2%B5-XRF+characterisation+of+chloride+ingress+and+self-healing+in+cracked+concrete.pdf (662.5Kb)
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http://hdl.handle.net/11250/2475661
Utgivelsesdato
2017
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  • Institutt for konstruksjonsteknikk [1656]
  • Publikasjoner fra CRIStin - NTNU [21889]
Originalversjon
Nordic Concrete Research. 2017, Proceedings of the XXIII Nordic Concrete Research Symposium, Part 2, 119-122.  
Sammendrag
In this paper we illustrate the applicability of µ-XRF for investigations of chloride ingress and self-healing in cracked concrete. A cracked and an uncracked concrete core exposed to seawater for more than 30 years were investigated with µ-XRF. The cracked sample had higher chloride ingress in the outer part of the concrete core (first 20 mm). Parts of the investigated crack were self-healed with calcium and magnesium rich phases. It was concluded that µ-XRF is a powerful tool for fast and detailed characterization of elemental distribution; e.g. chloride ingress, as it is able to detect spatial irregularities caused by for example cracks.
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