TY - CONF A1 - Wilsch, Gerd A1 - Goldschmidt, Sebastian A1 - Niederleithinger, Ernst A1 - Bienert, K. A1 - Schalk, H. A1 - Molkenthin, A. ED - Jacobsen, S. ED - Justnes, H. ED - Cepuritis, R. ED - Hornbostel, K. ED - Peng, Y. T1 - Quality control of hydrophobic coatings with an integrated marker element by laser-induced breakdown spectroscopy (LIBS) N2 - Reinforced concrete structures are affected by damage caused e. g. by freeze-thaw effects or corrosion. Most damage processes are triggered by moisture transport including soluble substances. Hydrophobie coatings can be used for prevention of such damage, but quantitative on-site quality assurance methods are so far missing. A way to overcome this problem is to integrate marker substances into the coating, which can be detected by spectroscopic methods. Different types of marker elements have been tested. It can be shown that transition metals are best suited for the task. Currently a LIBS (laser-induced breakdown spectroscopy) System is developed for the measurement of penetration depth and content of the hydrophobic coating via the marker element in the peripheral zone of concrete. T2 - ICDC 2012 - International congress on durability of concrete CY - Trondheim, Norway DA - 18.06.2012 KW - Hydrophobic coating KW - Marker element KW - Quality control KW - Depth of penetration KW - Concrete repair KW - Pitting corrosion KW - Chloride KW - Exposure KW - Freeze-taw cycles KW - Laser-induced breakdown spectroscopy KW - Hydrophobierung KW - Laser Induced Breakdown Spektroskopie KW - Qualitätskontrolle PY - 2012 SN - 978-82-8208-031-6 SP - Session B 1, 1 EP - 14 AN - OPUS4-27527 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bienert, K. A1 - Schalk, H. A1 - Molkenthin, A. A1 - Wilsch, Gerd A1 - Goldschmidt, Sebastian A1 - Niederleithinger, Ernst ED - Grantham, M. ED - Mechtcherine, V. ED - Schneck, U. T1 - Quality control of hydrophobic coatings with an integrated marker element by laser-induced breakdown spectroscopy (LIBS) N2 - Reinforced concrete structures are affected by damage, caused e.g., by freeze-thaw effects or corrosion. Most damage processes are triggered by moisture transport including soluble substances. Hydrophobic coatings can be used for prevention of such damage, but quantitative on-site quality assurance methods are so far missing. A way to overcome this problem is to integrate marker substances into the coating, which can be detected by spectroscopic methods. Different types of marker elements have been tested. It can be shown that transition metals are best suited for the task. Currently a LIBS (Laser Induces Breakdown Spectroscopy) system is developed for the measurement of penetration depth and content of the hydrophobic coating via the marker element in the peripheral zone of concrete. T2 - Concrete solutions 2011 - 4th International conference on concrete repair CY - Dresden, Germany DA - 26.09.2011 KW - Laser induced breakdown spectroscopy (LIBS) KW - Hydrophobic coating KW - Quality control KW - Depth of penetration KW - Concrete repair KW - Chloride PY - 2012 SN - 978-0-415-61-622-5 SP - 805 EP - 811 PB - Taylor & Francis CY - London AN - OPUS4-25151 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -