engleski

The reactive powder concrete bridge across Bakar strait

Croatia has a several big arch bridges. Many of these bridges, only after 20 years, had serious durability problems. These problems are primary related to the fact that the protective layer to reinforcement is rapidly being destroyed. Winds that reach up to 250 km/h drift large amount of chlorides that destroy the bridge structure, primary the arch and the columns. Thick layers of concrete didn’ t solve this problem entirely. Reconstruction of this type of damage is very expensive and long lasting. In the article is presented the making of the RPC 200 composite material. Preparation and testing of material is conducted in laboratory of Faculty of Civil Engineering, University of Zagreb. Concrete mix proportions are given in the article. This type of material, except for great mechanical properties has better durability parameters. Article discusses the possibility that the future arch bridge over Bakarska strait (Croatia) is made of RPC.

reactive powder concrete; durability; arch bridge

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