Environmentally-friendly self-compacting concrete

U radu su eksperimentalno analizirana svojstva samozbijajućeg betona u svježem i očvrslom stanju. Betonske mješavine su se razlikovale prema vrsti i količini mineralnih dodataka (metakaolin, leteći pepeo). Utvrđeno je da dodatak letećeg pepela i metakaolina utječe na bitno poboljšanje trajnosnih i mehaničkih svojstava samozbijajućeg betona, te ekološki pozitivno djeluje na smanjenje emisije CO2. Na temelju dobivenih rezultata ispitivanja dane su preporuke za praktičnu primjenu.An experimental analysis of properties of self-compacting concrete, for both fresh and hardened states of concrete, is presented in the paper. Concrete mixes differed according to the type and quantity of mineral admixtures (metakaolin, fly ash). It was established that the addition of fly ash and metakaolin greatly improves mechanical properties and durability of self-compacting concrete, and is favourable to environment due to reduction in CO2 emissions. Based on test results obtained, appropriate recommendations for practical application are given