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ŘSD otevře dva opravené mosty na Kladensku

Po náročných rekonstrukčních pracích uvede Ředitelství silnic a dálnic v úterý 18. listopadu do zkušebního provozu dva mosty na rychlostní silnici R7. První z nich leží v katastru obce Stehlečeves, druhý v obci Knovíz. Termín otevření se podařilo stavařům zkrátit skoro o půl roku.

„Oba mosty se podařilo opravit ve zkráceném termínu, stavaři nenarazili při práci na zásadnější problémy. Navíc celkovou cenu obou staveb se podařilo z původně vypočtených 250 ti milionů snížit na finálních 114 milionů,“ říká Jan Rýdl, tiskový mluvčí ŘSD.

Většina mostních objektů, které jsou součástí R7, využívala jako nosnou konstrukci prefabrikáty typu „K“ a „I“, které stavební urychlovaly práce, neboť jejich výroba i montáž mohly probíhat i v zimním období, na druhou stranu v nich mohly vznikat dutiny, ve kterých kondenzovala vodní pára, která narušovala konstrukci zevnitř. Materiál izolačních pásů izolace mostovky i technologie pokládky nezaručovaly nepropustnost- navíc betony použité na stavbu neobsahovaly přísady, které zvyšují odolnost proti chloridům. To se projevilo na trvanlivosti konstrukce. Výše uvedené nedostatky mostních objektů, budovaných v 70. tých a 80. tých letech však ukázal až čas, mosty tedy musely projít důkladnou rekonstrukcí. Při výstavbě mostů byly použity moderní technologie, například speciální beton vysoce odolný proti chloridům, izolace mostovky s pečetící vrstvou, nebo izolace opěr včetně pracovních spár. Mosty mají tedy všechny předpoklady k tomu, aby bezproblémově sloužily několik dalších desetiletí.

Zdroj: ŘSD

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