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Chemical investigation of concrete infrastructure using a mobile LIBS system

  • In order to determine the remaining life-time of reinforced concrete infrastructure like marine constructions, bridges or parking decks a fast and reliable detection of harmful species is necessary. If, as an example chlorine exceeds a specific concentration threshold, the result can be pitting corrosion of the reinforcement, which affects the stability and lifetime of building structure. In cooperation with industrial partners and BAM a mobile LIBS system for the on-site measurements has been developed. The mobile system uses a low energy laser with a pulse energy of 3 mJ and a NIR-spectrometer in combination with a scanner for two-dimensional mapping (140 x 170mm). This work presents the mobile LIBS system, the calibration and an on-site applications in a parking garage. A correlation between surface measurements on a parking deck and ingress profiles obtained due to concrete cores are presented. LIBS results using the mobile LIBS system are able to provide in-time information aboutIn order to determine the remaining life-time of reinforced concrete infrastructure like marine constructions, bridges or parking decks a fast and reliable detection of harmful species is necessary. If, as an example chlorine exceeds a specific concentration threshold, the result can be pitting corrosion of the reinforcement, which affects the stability and lifetime of building structure. In cooperation with industrial partners and BAM a mobile LIBS system for the on-site measurements has been developed. The mobile system uses a low energy laser with a pulse energy of 3 mJ and a NIR-spectrometer in combination with a scanner for two-dimensional mapping (140 x 170mm). This work presents the mobile LIBS system, the calibration and an on-site applications in a parking garage. A correlation between surface measurements on a parking deck and ingress profiles obtained due to concrete cores are presented. LIBS results using the mobile LIBS system are able to provide in-time information about the Cl concentration and can therefore be used for quality assurance during reinstatement work.zeige mehrzeige weniger

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  • EMSLIBS Poster mobile LIBS Druck.pdf
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Metadaten
Autor*innen:Tobias Günther
Koautor*innen:Cassian Gottlieb, Steven Millar, Gerd Wilsch
Dokumenttyp:Posterpräsentation
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2017
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau
Freie Schlagwörter:Chlorine; Concrete; LIBS
Veranstaltung:EMSLIBS 2017
Veranstaltungsort:Pisa, Italy
Beginndatum der Veranstaltung:11.06.2017
Enddatum der Veranstaltung:16.06.2017
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:29.11.2017
Referierte Publikation:Nein
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