TY - CONF A1 - Maierhofer, Christiane A1 - Krause, Martin A1 - Mielentz, Frank A1 - Streicher, Doreen A1 - Milmann, Boris A1 - Gardei, André A1 - Kohl, Christoph A1 - Wiggenhauser, Herbert T1 - Complementary application of radar, impact-echo and ultrasonics for testing concrete structures and metallic tendon ducts T2 - Proceedings of the 83rd Annual Meeting Transportation Research Board of the National Academies CY - Washington T2 - 83rd Annual Meeting Transportation Research Board of the National Academies CY - Washington, D. C., USA DA - 2004-01-11 KW - Non-destructive testing KW - Tendon duct KW - Concrete bridge KW - Radar KW - Ultrasonic KW - Impact-echo PY - 2004 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/4909 AN - OPUS4-4909 SP - 18 pages AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany