. "2004-09-14+02:00"^^ . "Identification of Defects in Concrete by Surface Ultrasonic Waves"@en . "Mach, Karel" . "RIV/68407700:21110/04:01101220!RIV/2005/MSM/211105/N" . "Z(MSM 210000004)" . "3"^^ . . "21110" . . . "4"^^ . "concrete; surface defects; ultrasonic waves"@en . . . . "Semer\u00E1k, Petr" . "Identification of Defects in Concrete by Surface Ultrasonic Waves" . "Proceedings of International Workshop: Research Activities of Physics Departments of Civil Engineering Faculties in the Czech and Slovak Republics" . . "\u0160tarman, S." . . "Cikh\u00E1j" . "Brno" . "Michalko, Ondrej" . "RIV/68407700:21110/04:01101220" . "7"^^ . . "Identifikace poruch betonu pomoc\u00ED povrchov\u00FDch ultrazvukov\u00FDch vln"@cs . "Akademick\u00E9 nakladatelstv\u00ED CERM" . "On the surface area of constructions the occurrence of defects is very common phenomena. The environmental stress, as for example stress by changes in temperatures during the periods warm - frost, often results in such defects. One of method suitable for the detection of the surface defects is described. The method described is using the difference in Rayleigh waves velocity on the non - aged and aged constructions surface" . "Identifikace poruch betonu pomoc\u00ED povrchov\u00FDch ultrazvukov\u00FDch vln"@cs . "On the surface area of constructions the occurrence of defects is very common phenomena. The environmental stress, as for example stress by changes in temperatures during the periods warm - frost, often results in such defects. One of method suitable for the detection of the surface defects is described. The method described is using the difference in Rayleigh waves velocity on the non - aged and aged constructions surface"@en . "V p\u0159\u00EDsp\u011Bvku je pops\u00E1na metoda nedestruktivn\u00EDho zkoum\u00E1n\u00ED poruch v betonu pomoc\u00ED ultrazvukov\u00E9ho mechanick\u00E9ho vln\u011Bn\u00ED. Pou\u017Eit\u00E1 metoda vyu\u017E\u00EDv\u00E1 rozd\u00EDlu v rychlosti \u0161\u00ED\u0159en\u00ED Rayleighov\u00FDch vln v betonu s poruchami a bez nich"@cs . "567146" . . "80-7204-353-6" . . "75 ; 81" . "Identification of Defects in Concrete by Surface Ultrasonic Waves"@en . . "Identification of Defects in Concrete by Surface Ultrasonic Waves" . . . . . "[EA4B16217FF4]" . .