Laser induced breakdown spectroscopy (LIBS) - alternative to wet chemistry and micro-XRF
- Laser Induced Breakdown Spectroscopy (LIBS) is a combination of laser ablation, plasma formation and optical emission spectroscopy. The possibility of direct measurements on the sample surface, the minimum of necessary sample preparation and the automated setup allows for fast investigations of building materials. In combination with a scanning technique (translation stage or scanning mirrors head) the element distribution can be evaluated in consideration of the material's heterogeneity. LIBS measurements are also time-and cost-saving. The ingress profile of chlorine on a 50mm diameter concrete core up to a depth of 50mm can be measured and evaluated in less than 10 minutes. The results are normally referred to the evaporated mass, which is approximately the cement mass of the specific concrete. As a completion to micro XRF measurements also light elements like sodium or hydrogen can be detected. The spatial resolution of the measurement may reach 50 ìm at a maximum measurementLaser Induced Breakdown Spectroscopy (LIBS) is a combination of laser ablation, plasma formation and optical emission spectroscopy. The possibility of direct measurements on the sample surface, the minimum of necessary sample preparation and the automated setup allows for fast investigations of building materials. In combination with a scanning technique (translation stage or scanning mirrors head) the element distribution can be evaluated in consideration of the material's heterogeneity. LIBS measurements are also time-and cost-saving. The ingress profile of chlorine on a 50mm diameter concrete core up to a depth of 50mm can be measured and evaluated in less than 10 minutes. The results are normally referred to the evaporated mass, which is approximately the cement mass of the specific concrete. As a completion to micro XRF measurements also light elements like sodium or hydrogen can be detected. The spatial resolution of the measurement may reach 50 ìm at a maximum measurement frequency of up to 100 Hz. On the basis of calibration curves, results can be quantified.…
Autor*innen: | Gerd Wilsch, Thorsten Eichler, Steven Millar, Dieter Schaurich |
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Persönliche Herausgeber*innen: | M. Grantham, P. A. M. Basheer, B. Magee, M. Soutsos |
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Concrete Solutions 2014 (Proceedings) |
Jahr der Erstveröffentlichung: | 2014 |
Verlag: | CRC Press |
Erste Seite: | 611 |
Letzte Seite: | 615 |
Freie Schlagwörter: | Alkali-silica reaction (ASR); Chlorine; Concrete; LIBS; Sodium |
Veranstaltung: | Concrete Solutions 2014 |
Veranstaltungsort: | Belfast, UK |
Beginndatum der Veranstaltung: | 01.09.2014 |
Enddatum der Veranstaltung: | 03.09.2014 |
ISBN: | 978-1-138-02708-4 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Nein |