THE "VRLA" HE PLANT ENTRY STRUCTURE CONCRETE RESTORATION

The paper presents an example of a structure exposed for a long period of time to the action of several aggressive factors: alternate freezing and thawing, efflorescence and carbonation. Representative samples were taken from the concrete structure of the facility, and the relevant properties of concrete were identified in the laboratory. The analysis of the collected data demonstrated significant deficiencies of the implemented concrete technology during construction of the facility. On this basis, a plan for restoration of the facility was made, and the restoration was accomplished, revitalizing the facility. This example too, demonstrates that implementation of new standards in the field of concrete technology is necessary.Original Abstract: U clanku je prikazan primjer jednog objekta koji je u dugom vremenskom razdoblju bio izlozen utjecaju vise agresivnih djelovanja: naizmjenicno smrzavanje i odmrzavanje, eflorescencija i karbonatizacija. Iz betonske konstrukcije objekta uzeti su reprezentativni uzorci na kojima su u laboratoriju utvrdene relevantne karakteristike betona. Analizom prikupljenih podataka utvrdeni su znacajni nedostaci primijenjene tehnologije betona prilikom izvodenja objekta. Na osnovu toga uraden je projekt sanacije objekta, koja je potom izvedena, tako daje objekt revitaliziran. I ovaj primjer pokazuje daje primjena novih standarda iz podrucja tehnologije betona neophodna.