Zitieren Sie bitte immer diesen URN: urn:nbn:de:kobv:b43-347593
NDT for microstructure and moisture investigation of porous building material
- Non-destructive testing methods are mostly applied and established for the detection of embedded mounting parts or structural defects in building elements. The assessment of the concrete microstructure or microstructural changes like chemical alterations or the formation of microcracks, e.g. due to material aging, freeze-thaw cycles, alkali-silica reaction and ettringite, is not in the focus of ndt research though. Concrete moisture and enhanced salt contents, which usually trigger all chemical microstructural changes, are other material properties, lacking reliable ways of measuring. But, the assessment of such material properties, on the long term also in a depth resolved manner, is definitely important, when the sustainability of our concrete infrastructure buildings shall be evaluated. New consideration like the potential use of ndt, in particular the combination of different methods and alternate ways of data analysis are subject of research currently undertaken at BAM. TheseNon-destructive testing methods are mostly applied and established for the detection of embedded mounting parts or structural defects in building elements. The assessment of the concrete microstructure or microstructural changes like chemical alterations or the formation of microcracks, e.g. due to material aging, freeze-thaw cycles, alkali-silica reaction and ettringite, is not in the focus of ndt research though. Concrete moisture and enhanced salt contents, which usually trigger all chemical microstructural changes, are other material properties, lacking reliable ways of measuring. But, the assessment of such material properties, on the long term also in a depth resolved manner, is definitely important, when the sustainability of our concrete infrastructure buildings shall be evaluated. New consideration like the potential use of ndt, in particular the combination of different methods and alternate ways of data analysis are subject of research currently undertaken at BAM. These approaches involve for example working towards (i) a deeper understanding of how to measure moisture distributions reliably and follow transport phenomena, (ii) the use of stray phenomena in radar and ultrasound to locate material inhomogeneities or (iii) the application of LIBS for the delineation of diffusion and migration processes but also (iv) the use of new tools for data analysis like data fusion. First results are presented and new ideas discussed.…
Autor*innen: | Sabine KruschwitzORCiD |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | The e-journal of nondestructive testing & ultrasonics |
Jahr der Erstveröffentlichung: | 2015 |
Veröffentlichende Institution: | Bundesanstalt für Materialforschung und -prüfung (BAM) |
Verlag: | NDT.net |
Verlagsort: | Kirchwald |
Jahrgang/Band: | 20 |
Ausgabe/Heft: | 11 |
Aufsatznummer: | 18354 |
Erste Seite: | 1 |
Letzte Seite: | 5 |
Freie Schlagwörter: | Concrete deterioration; Cracking; Microstructure; Moisture; Monitoring; Non-destructive testing; Radar; Screed |
Veranstaltung: | NDT-CE 2015 - International symposium non-destructive testing in civil engineering |
Veranstaltungsort: | Berlin, Germany |
Beginndatum der Veranstaltung: | 15.09.2015 |
Enddatum der Veranstaltung: | 17.09.2015 |
URN: | urn:nbn:de:kobv:b43-347593 |
URL: | http://www.ndt.net/?id=18354 |
ISSN: | 1435-4934 |
Verfügbarkeit des Dokuments: | Datei für die Öffentlichkeit verfügbar ("Open Access") |
Lizenz (Deutsch): | Creative Commons - Namensnennung-Keine Bearbeitung |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Nein |
Schriftenreihen ohne Nummerierung: | Wissenschaftliche Artikel der BAM |