Combining Reclaimed Asphalt Pavement (RAP) and Recycled Concrete Aggregate (RCA) from Cuba to Obtain a Coarse Aggregate Fraction

Jessika Morales Fournier, Debora Acosta Álvarez, Anadelys Alonso Aenlle, Antonio José Tenza-Abril and Salvador Ivorra
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Jessika Morales Fournier: Faculty of Civil Engineering, Technological University of Havana, Havana 11500, Cuba
Debora Acosta Álvarez: Faculty of Civil Engineering, Technological University of Havana, Havana 11500, Cuba
Anadelys Alonso Aenlle: Faculty of Civil Engineering, Technological University of Havana, Havana 11500, Cuba
Antonio José Tenza-Abril: Department of Civil Engineering, University of Alicante, 03080 Alicante, Spain
Salvador Ivorra: Department of Civil Engineering, University of Alicante, 03080 Alicante, Spain

Sustainability, 2020, vol. 12, issue 13, 1-16

Abstract: In Cuba, tons of construction and demolition waste (CDW) are generated during urban construction and reconstruction activities every year. The use of CDW, such as recycled concrete aggregates (RCA) and reclaimed asphalt pavement (RAP), in pavement construction is a viable solution to preserve the consumption of natural aggregates (NA), and to minimize the impact of landfill. The main objective of this work is to obtain a 5–10 mm aggregate fraction of RCA and RAP, to obtain an appropriate recycled coarse aggregate for manufacturing hot mix asphalt (HMA). Each source of RCA, RAP and NA, and the combinations RCA/RAP (0/100, 25/75, 50/50, 75/25 and 100/0) were characterized (moisture, asphalt content of RAP, specific gravity, water absorption, and flakiness index) for determining a better combination. The results showed that the combination (RCA/RAP) that best meets the NA aggregates specifications used for hot mix asphalt were RCA/RAP: 25/75 and 50/50. The results show the possibility of combining both wastes to obtain a coarse aggregate fraction with a high environmental benefit, by reducing the use of natural resources.

Keywords: recycled concrete aggregates; reclaimed asphalt pavement; bonded mortar; recycled materials; asphalt mixture; circular economy (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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