TY - RPRT A1 - Maierhofer, Christiane A1 - Köpp, Christian A1 - Binda, L. A1 - Zanzi, L. A1 - Santiago, J.R. A1 - Knupfer, B. A1 - Johansson, B. A1 - Modena, C. A1 - da Porto, F. A1 - Marchisio, M. A1 - Gravina, F. A1 - Falci, M. A1 - Ruiz, J.C.G. A1 - Tomazevic, M. A1 - Bosiljkov, V. A1 - Hennen, C. A1 - Toledo, D.E.L. A1 - Zajc, A. A1 - delli Paoli, S. A1 - Drdácký, M. A1 - Válek, J. T1 - On-site investigation techniques for the structural evaluation of historic masonry buildings, Community research, Project Report EUR 21696 EN, Onsiteformasonry project KW - Non-destructive testing in civil engineering KW - Historic masonry KW - Damage KW - Cultural heritage KW - Complementary methods KW - Structural modelling KW - Guidelines and recommendations PY - 2006 SN - 92-894-9601-0 SP - 1 EP - 141 PB - Office for Official Publications of the European Communities CY - Luxembourg AN - OPUS4-14168 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Válek, J. A1 - Kruschwitz, Sabine A1 - Wöstmann, Jens A1 - Kind, Thomas A1 - Valach, J. A1 - Köpp, Christian A1 - Lesák, J. T1 - Nondestructive investigation of wet building material: multimethodical approach N2 - Building stones are porous media and they can deteriorate through moisture ingress and secondary damage such as crystallization of soluble salts. Not only is this due to the increasing number of flood events in the past years but also structural damages of houses from activity such as leakage or rising moisture (groundwater) are the main causes. The potential benefit of several nondestructive testing methods to assess water damage in building stone has been studied in a field-scale experiment. Three testing walls made of fired clay brick, sandstone, and spongilite were flooded and their drying behavior monitored using infrared thermography, complex resistivity, ground penetrating radar, and ultrasonics. The results were compared to the average moisture content determined by gravimetric weighing of the specimens. Qualitatively, the results of the different nondestructive testing methods matched well. But in terms of quantitative data, some scatter was observed and the results should be viewed with care. Collecting time-consuming calibration data would help to overcome this problem, but especially when dealing with historic building structures, this is not always possible in practice. KW - Diagnostics KW - Moisture KW - Masonry KW - Nondestructive tests KW - Electrical PY - 2010 U6 - https://doi.org/10.1061/(ASCE)CF.1943-5509.0000056 SN - 0887-3828 VL - 24 IS - 5 SP - 462 EP - 472 PB - Soc. CY - Reston, Va. AN - OPUS4-22355 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -