Vol.8, No 1, 2010 pp. 99 - 109
UDC
691.212:691.214(045)=111
DOI: 10.2298/FUACE1001099T
INFLUENCE OF CRUSHED STONE AGGREGATE TYPE ON
CONCRETE CONSISTENCY
Gordana Topličić Ćurčić1*, Zoran Grdić1**, Iva Despotović2, Nenad Ristić1
1University of Niš, Faculty of Civil Engineering and Architecture, Serbia
2High Civil Engineering – Geodetic School, Belgrade
E-mail:
*gordana.toplicic.curcic@gaf.ni.ac.rs, **zoran.grdic@gaf.ni.ac.rs
The main reason for usage of crushed stone mineral aggregate is need for
concrete construction building with care about environmental protection, water resources,
etc. Influence of crushed stone mineral aggregate on concrete consistency is considered in
this paper. River aggregate is used as a benchmark, and from crushed aggregates: limestone,
andesite, diabase and basalt.
The drawn conclusion is that fine crushed aggregate has an important influence on
concrete consistency because it decreases concrete's workability and placing. Replacement
with river aggregate improves concrete consistency. Coarse aggregate type also has an
influence on consistency. Further investigations should be based on possibility of fine
crushed aggregate usage for SCC production.
Key words:
consistency, crushed stone aggregate, river aggregate, limestone,
andesite, diabase, basalt.
UTICAJ VRSTE DROBLJENOG MINERALNOG AGREGATA
NA KONZISTENCIJU SVEŽEG BETONA
Osnovni razlog za eksploataciju drobljenog mineralnog agregata je potreba za građenjem
konstrukcija od betona, ali se pri tome mora voditi računa o zaštiti životne stredine, vodenih
resursa i sl. U radu je razmatran uticaj drobljenog mineranog agregata na konzistenciju betona.
Korišćen je rečni agregat kao etalon, a od drobljenih agregata: krečnjak, andezit, diabaz i bazalt.
Došlo se do zaključka da sitan drobljeni agregat ima značajnog uticaja na konzisteniju betona
tako što smanjuje njegovu obradljivost i ugadljivost. Zamenog istog rečnim, poboljšava se
obradljivost betona. Vrsta krupnog agregata utiče na ostvarenu konzistenciju. Dalja istraživanja
treba nastaviti u smeru iskorišćenja sitnog drobljenog agregata za projektovanje SCC betona.
Ključne reči:
konzistencija, drobljeni mineralni agregat, krečnjak, andezit, diabaz,
bazalt, rečni agregat
