. "26110" . . . "Lightweight high performance concrete"@en . . . . . "Bratislava" . "LEHK\u00C9 VYSOKOHODNOTN\u00C9 BETONY" . . . . "4"^^ . "V posledn\u00EDch letech sm\u011B\u0159uje v\u00FDvoj betonu k takzvan\u00E9mu vysokohodnotn\u00E9mu betonu. Zejm\u00E9na je mo\u017En\u00E9 z\u0159eteln\u011B sledovat aplikace samozhutniteln\u00FDch beton\u016F a vysokopevnostn\u00EDch beton\u016F a za\u010D\u00EDnaj\u00EDc\u00ED aplikace lehk\u00FDch beton\u016F s vyu\u017Eit\u00EDm lehk\u00E9ho p\u0159\u00EDrodn\u00EDho nebo um\u011Bl\u00E9ho p\u00F3rovit\u00E9ho kameniva. Vysokohodnotn\u00E9 betony (HPC -- High Performance Concrete), jak u\u017E s\u00E1m n\u00E1zev napov\u00EDd\u00E1, jsou betony vy\u0161\u0161\u00EDch u\u017Eitn\u00FDch vlastnost\u00ED. Je to beton spl\u0148uj\u00EDc\u00ED speci\u00E1ln\u00ED kombinaci vlastnost\u00ED a po\u017Eadavk\u016F, kter\u00E9 nemohou b\u00FDt v\u017Edy dosa\u017Eeny b\u011B\u017En\u011B pou\u017E\u00EDvan\u00FDmi slo\u017Ekami betonu, norm\u00E1ln\u00EDm procesem m\u00EDsen\u00ED, ukl\u00E1d\u00E1n\u00ED a o\u0161et\u0159ov\u00E1n\u00ED betonu. To znamen\u00E1, \u017Ee jsou kladeny speci\u00E1ln\u00ED po\u017Eadavky na vlastnosti t\u011Bchto beton\u016F v \u010Derstv\u00E9m i zatvrdl\u00E9m stavu. Pro \u010Derstv\u00FD beton je ur\u010Duj\u00EDc\u00ED snadn\u00E9 ukl\u00E1d\u00E1n\u00ED a hutn\u011Bn\u00ED bez segregace, sedimentace a bleedingu a pro ztvrdl\u00FD beton je pak ur\u010Duj\u00EDc\u00ED krom\u011B vysok\u00FDch pevnost\u00ED tak\u00E9 trvanlivost a odolnost betonu v\u016F\u010Di agresivn\u00EDmu prost" . "143"^^ . "Lightweight high performance concrete"@en . "1" . . "V posledn\u00EDch letech sm\u011B\u0159uje v\u00FDvoj betonu k takzvan\u00E9mu vysokohodnotn\u00E9mu betonu. Zejm\u00E9na je mo\u017En\u00E9 z\u0159eteln\u011B sledovat aplikace samozhutniteln\u00FDch beton\u016F a vysokopevnostn\u00EDch beton\u016F a za\u010D\u00EDnaj\u00EDc\u00ED aplikace lehk\u00FDch beton\u016F s vyu\u017Eit\u00EDm lehk\u00E9ho p\u0159\u00EDrodn\u00EDho nebo um\u011Bl\u00E9ho p\u00F3rovit\u00E9ho kameniva. Vysokohodnotn\u00E9 betony (HPC -- High Performance Concrete), jak u\u017E s\u00E1m n\u00E1zev napov\u00EDd\u00E1, jsou betony vy\u0161\u0161\u00EDch u\u017Eitn\u00FDch vlastnost\u00ED. Je to beton spl\u0148uj\u00EDc\u00ED speci\u00E1ln\u00ED kombinaci vlastnost\u00ED a po\u017Eadavk\u016F, kter\u00E9 nemohou b\u00FDt v\u017Edy dosa\u017Eeny b\u011B\u017En\u011B pou\u017E\u00EDvan\u00FDmi slo\u017Ekami betonu, norm\u00E1ln\u00EDm procesem m\u00EDsen\u00ED, ukl\u00E1d\u00E1n\u00ED a o\u0161et\u0159ov\u00E1n\u00ED betonu. To znamen\u00E1, \u017Ee jsou kladeny speci\u00E1ln\u00ED po\u017Eadavky na vlastnosti t\u011Bchto beton\u016F v \u010Derstv\u00E9m i zatvrdl\u00E9m stavu. Pro \u010Derstv\u00FD beton je ur\u010Duj\u00EDc\u00ED snadn\u00E9 ukl\u00E1d\u00E1n\u00ED a hutn\u011Bn\u00ED bez segregace, sedimentace a bleedingu a pro ztvrdl\u00FD beton je pak ur\u010Duj\u00EDc\u00ED krom\u011B vysok\u00FDch pevnost\u00ED tak\u00E9 trvanlivost a odolnost betonu v\u016F\u010Di agresivn\u00EDmu prost"@cs . "80-8076-024-1" . . "RIV/00216305:26110/06:PU53980!RIV10-MSM-26110___" . "2"^^ . . "P(GA103/04/0668), Z(MSM0021630511)" . . "Jaga group s.r.o." . "[CA76AAC6CB16]" . "2"^^ . "The development of concrete heads for the so called high performance concrete during the last years. Especially the following three directions are in view: Application of self compacting concrete Increase of high-strength concrete application Beginning of lightweight concrete application with utilization of cellular aggregates This paper discusses the combination of these three directions i.e. especially the development of lightweight self compacting concrete achieving the most possible strength values with the possibility of pumping. It is necessary to mention that the development of a new concrete always has to solve the problem of the lack of adequate standards and of guidelines for design. For this reason the main aim of the work is to apply the theory of common self compacting concrete on lightweight self compacting concrete and also to apply the theories of normal concrete pumpability and of high strength concrete with natural aggregates on lightweight concrete. The problem of the lightweight se"@en . "LEHK\u00C9 VYSOKOHODNOTN\u00C9 BETONY" . . . . . "Hubertov\u00E1, Michala" . "LEHK\u00C9 VYSOKOHODNOTN\u00C9 BETONY"@cs . "lightweight concrete, lightweight aggregate Liapor, high performance concrete, rheology of self compacting concrete"@en . "Stavebn\u00ED ro\u010Denka 2006" . "483117" . "Hela, Rudolf" . "RIV/00216305:26110/06:PU53980" . . "LEHK\u00C9 VYSOKOHODNOTN\u00C9 BETONY"@cs .