TY - JOUR A1 - Wiggenhauser, Herbert A1 - Köpp, Christian A1 - Timofeev, Juri A1 - Azari, H. T1 - Controlled creating of cracks in concrete for non-destructive testing JF - Journal of Nondestructive Evaluation N2 - The non-destructive assessment of cracks in concrete is a common task for which non-destructive evaluation solutions have been published. Primarily, these tests have been carried out on artificial cracks that have been created by using notches instead of natural cracks. This study evaluates a procedure designed to create reproducible and controlled cracks in concrete. The procedure is based on using expanding mortar in a series of blind holes. This is done in combination with carefully aligned reinforcement to guide the direction of the crack development. The depth of the crack is also controlled by reinforcement. Crack depth varies statistically in the range of the Maximum aggregate size (16 mm) used for concrete. KW - Non-destructive testing of concrete KW - Cracks KW - Reference specimen PY - 2018 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-457367 UR - https://rdcu.be/4IPN DO - https://doi.org/10.1007/s10921-018-0517-x SN - 0195-9298 SN - 1573-4862 VL - 37 IS - 3 SP - 67, 1 EP - 9 PB - Springer CY - New York AN - OPUS4-45736 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -