Simulation of real removal of heat-affected concrete layers by water jets during repair works

0463949 - ÚGN 2017 RIV HR eng C - Konferenční příspěvek (zahraniční konf.)
Sitek, Libor - Bodnárová, L. - Foldyna, Josef - Klich, Jiří
Simulation of real removal of heat-affected concrete layers by water jets during repair works.
NT2F16 - 16th International Conference on New Trends in Fatigue and Fracture. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2016 - (Božić, Ž.), s. 281-282. ISBN 978-953-7738-39-6.
[NT2F16 - International Conference on New Trends in Fatigue and Fracture /16./. Dubrovník (HR), 24.05.2016-27.05.2016]
Institucionální podpora: RVO:68145535
Klíčová slova: concrete * heating * water jet * hydrodemolititon * repair of concrete structures
Kód oboru RIV: JQ - Strojní zařízení a nástroje

The contribution focuses on laboratory simulation of real-life removal of degraded layers of
heat-affected concrete panels by means of hydrodemolition. Several concrete mixtures were
prepared. They differed in used aggregates, types of cement and presence of polypropylene
fibres. Degraded layers were removed by rotating continuous high speed water jet. For comparison,
the same process was used for the removal of surface layers of concretes which
were not thermally loaded. Resistance of concretes against water jet penetration was studied.
Trvalý link: http://hdl.handle.net/11104/0263025