Aging of RC structures detecting by dynamic response

0355396 - ÚTAM 2011 RIV HK eng C - Konferenční příspěvek (zahraniční konf.)
Pirner, Miroš - Urushadze, Shota - Fischer, Ondřej
Aging of RC structures detecting by dynamic response.
Proceedings of the 20th International Conference on Adaptive Structures and Technologies (ICAST). Hongkong: ICAST, 2009 - (Liao, W.), s. 546-563. ISBN 962-85534-5-1.
[The International Conference on Adaptive Structures and Technologies ICAST /20./. Hongkong (HK), 20.10.2009-22.10.2009]
Grant CEP: GA ČR(CZ) GA103/09/0091
Grant ostatní: GA ČR(CZ) GA103/08/1340
Program: GA
Výzkumný záměr: CEZ:AV0Z20710524
Klíčová slova: damage identification * diagnostics of the structure * creep in concrete.
Kód oboru RIV: JM - Inženýrské stavitelství

Downtrend of the fundamental natural frequency of a structure with time, detected by periodical diagnostic in situ measurements, can signal damage, starting anywhere in the structure, or the progressing degradation of its material. The influence of aging (creep) of concrete on E-modulus is examined in the paper, using the data found on a real chimney during the first 7 years of its existence. An attempt to use these data for the prognosis of the future behaviour of this structure was given a half year ago; the presented paper brings recent results obtained on other old RC structures, newly tested after some years.
Trvalý link: http://hdl.handle.net/11104/0194173