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Pathway of a damaging mechanism-Analyzing chloride attack by synchrotron based X-ray diffraction
Helmholtz-Center Berlin for Materials and Energy, Germany.
BAM Federal Institute for Materials Research and Testing, Germany.
RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.ORCID iD: 0000-0001-9867-7631
BAM Federal Institute for Materials Research and Testing, Germany.
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2015 (English)In: Solid State Sciences, ISSN 1293-2558, E-ISSN 1873-3085, Vol. 44, p. 45-54Article in journal (Refereed) Published
Abstract [en]

Typically, the changes of the phase compositions due to the chemical attack are studied in-situ only by chemical analysis or microscopy. In this study, the chloride transport and binding in the cement matrix in different cementitious materials was analyzed by synchrotron based X-ray diffraction (SyXRD) and energy dispersive X-ray spectroscopy (EDX). Sample materials consisting of cement paste were embedded in high concentrated sodium chloride solution over different time spans. Afterwards, the phase and chemical compositions were determined. The high spatial resolution and the information about the chloride distribution offer a detailed view of chloride binding in the cement matrix and allow the conclusions about the degradation mechanisms. The results are discussed related to the influence of different supplementary cementitious materials on the damaging mechanism. © 2015 Elsevier Masson SAS.

Place, publisher, year, edition, pages
Elsevier Masson SAS , 2015. Vol. 44, p. 45-54
Keywords [en]
Chloride attack, Durability, EDX, In-situ, Portland cement, X-Ray diffraction, Binding energy, Cements, Chemical analysis, Chemical attack, Degradation, Energy dispersive spectroscopy, X ray spectroscopy, Cementitious materials, Chemical compositions, Degradation mechanism, Energy dispersive X ray spectroscopy, High spatial resolution, Sodium chloride solution, Supplementary cementitious material, X ray diffraction
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-42340DOI: 10.1016/j.solidstatesciences.2015.03.021Scopus ID: 2-s2.0-84928348896OAI: oai:DiVA.org:ri-42340DiVA, id: diva2:1380968
Note

Funding text 1: The authors thank Andre Gardei and Simone Rolf from the BAM Federal Institute for Materials Research and Testing in Berlin (Germany) for technical support and Jan Erik Linqvist from the CBI Swedish Cement and Concrete Research Institute in Borås (Sweden) for supporting the SEM-EDX analysis.

Available from: 2019-12-19 Created: 2019-12-19 Last updated: 2020-01-22Bibliographically approved

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Malaga, Katarina

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