A comment was published on 16 February 2011,
Sustainability 2011, 3(2), 465-468
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Recycled Concrete as Aggregate for Structural Concrete Production
Department for Civil Engineering, Faculty of Technical Sciences, Trg Dositeja Obradovica 6, 21000 Novi Sad, Serbia
Faculty of Civil Engineering, University of Belgrade, Bul. kralja Aleksandra 73, 11000 Belgrade, Serbia
* Author to whom correspondence should be addressed.
Received: 5 March 2010; in revised form: 16 March 2010 / Accepted: 22 April 2010 / Published: 30 April 2010
Abstract: A comparative analysis of the experimental results of the properties of fresh and hardened concrete with different replacement ratios of natural with recycled coarse aggregate is presented in the paper. Recycled aggregate was made by crushing the waste concrete of laboratory test cubes and precast concrete columns. Three types of concrete mixtures were tested: concrete made entirely with natural aggregate (NAC) as a control concrete and two types of concrete made with natural fine and recycled coarse aggregate (50% and 100% replacement of coarse recycled aggregate). Ninety-nine specimens were made for the testing of the basic properties of hardened concrete. Load testing of reinforced concrete beams made of the investigated concrete types is also presented in the paper. Regardless of the replacement ratio, recycled aggregate concrete (RAC) had a satisfactory performance, which did not differ significantly from the performance of control concrete in this experimental research. However, for this to be fulfilled, it is necessary to use quality recycled concrete coarse aggregate and to follow the specific rules for design and production of this new concrete type.
Keywords: recycled aggregate; recycled aggregate concrete; mechanical properties; load test; structural concrete
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MDPI and ACS Style
Malešev, M.; Radonjanin, V.; Marinković, S. Recycled Concrete as Aggregate for Structural Concrete Production. Sustainability 2010, 2, 1204-1225.
Malešev M, Radonjanin V, Marinković S. Recycled Concrete as Aggregate for Structural Concrete Production. Sustainability. 2010; 2(5):1204-1225.
Malešev, Mirjana; Radonjanin, Vlastimir; Marinković, Snežana. 2010. "Recycled Concrete as Aggregate for Structural Concrete Production." Sustainability 2, no. 5: 1204-1225.