Vol.8, No 2, 2010 pp. 155 - 162
UDC
691.322:691.4:620.251.1(045)=111
DOI: 10.2298/FUACE1002155J
FROST RESISTANCE OF CONCRETE WITH CRUSHED BRICK AS AGGREGATE
Ksenija Janković, Dragan Bojović, Dragan Nikolić,
Ljiljana Lončar, Zoran Romakov
Institute for testing materials, Belgrade, Serbia
The investigation included concrete made by using recycled brick as aggregate. Experimental work included several types of concrete made with the same cement content (385 kg/m3), and same consistency (slump about 1 cm). Recycled brick and combination of natural river aggregate and recycled brick were used as aggregates. The influence of percentage and grain size of crushed brick aggregate on concrete compressive strength, water absorption and frost resistance were observed. On the basis of the results obtained during experimental research, a general conclusion can be drawn that the application of recycled concrete as aggregate can lead to new composites with satisfactory physical-mechanical properties.
Key words:
crushed brick, recycled aggregate, concrete, frost resistance
OTPORNOST PREMA DEJSTVU MRAZA BETONA SA AGREGATOM OD DROBLJENE OPEKE
Predmet istraživanja su betoni spravljeni sa recikliranom opekom kao agregatom. Eksperimentalni rad je obuhvatio više vrsta betona spravljenih sa istom količinom cementa (385 kg/m3) i istom konzistencijom (sleganje oko 1 cm). Kao agregat je korišćena reciklirana opeka i kombinacija reciklirane opeke i prirodnog rečnog agregata. Posmatran je uticaj upotrebljenih frakcija drobljene opeke i njihovog procentualnog učešća na čvrstoću pri pritisku, upijanje vode i otpornost prema dejstvu mraza. Na osnovu rezultata eksperimentalnih istraživanja može se zaključiti da se primenom reciklirane opeke kao agregata dobija novi kompozitni material sa zadovoljavajućim fizičko – mehaničkim karakteristikama.
Ključne reči:
drobljena opeka, reciklirani agregat, beton, otpornost prema dejstvu mraza
