Naslov
EUREKA E!4166 FIRECON - Fire resistant concrete made with steel slag as an aggregate

Autori
Ducman, Vilma ; Mladenovič, Ana ; Netinger, Ivanka, Bjegović, Dubravka ; Jelčić-Rukavina, Marija

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), ostalo

Izvornik
EMAMB 2011 - 13th Euroseminar on microscopy applied to building materials / Alenka Mauko, Tadeja Kosec, Tinkara Kopar, Nina Gartner - Ljubljana : Slovenian National Building and Civil Engineering Institute, 2011, 27-28

ISBN
978-961-90366-6-2

Skup
EMAMB 2011 - 13th Euroseminar on microscopy applied to building materials

Mjesto i datum
Ljubljana, Slovenija, 14.06.2011. - 18.06.2011

Vrsta sudjelovanja
Ostalo

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
steel slag; refractory industry; fire resistant concrete

Sažetak
FIRECON is a Eureka project whose main goal is to verify the potential use of electric arc furnace (EAF) steel slag in the refractory industry, as well as in precast concrete products. When exposed to higher temperatures, such slag undergoes a phase transformation from wüstite into magnetite, which is accompanied by volumetric expansion, introducing cracks in the concrete and drastically worsening its mechanical properties. Since the transformation which occurs above 800 oC is irreversible, previous thermal treatment of slag at temperatures of up to 1000 oC results in thermally stable aggregate, which can be used in the refractory industry at temperatures of up to 1100 oC. Results so far obtained show that thermally treated steel slag can be successfully used in refractory concrete. When used in structural concrete, slags can be considered as aggregates with good fire resistance, unless they are combined with Portland cement. This problem occurs due to the high coefficient of thermal expansion of slag, which is result of phase transformations and which causes deterioration on the aggregate-cement paste interface during heating, thus destroying the integrity of the concrete.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Metalurgija

POVEZANOST RADA