Mechanical Behavior of Hot-Mix Asphalt Made with Recycled Concrete Aggregates from Construction and Demolition Waste: A Design of Experiments Approach

Juan J. Galan, Luís M. Silva, Ignacio Pérez and Ana R. Pasandín
Additional contact information
Juan J. Galan: University of A Coruña, ETSI Caminos, Canales y Puertos, Campus de Elviña s/n, 15071 La Coruña, Spain
Luís M. Silva: CIETI, ISEP-School of Engineering, Polytechnic of Porto, Rua Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal
Ignacio Pérez: University of A Coruña, ETSI Caminos, Canales y Puertos, Campus de Elviña s/n, 15071 La Coruña, Spain
Ana R. Pasandín: University of A Coruña, ETSI Caminos, Canales y Puertos, Campus de Elviña s/n, 15071 La Coruña, Spain

Sustainability, 2019, vol. 11, issue 13, 1-12

Abstract: The present work is a re-evaluation of previous research on the durability of hot-mix asphalt made with recycled concrete aggregates from construction and demolition waste (CDW) with a different approach. Response surface methodology (RSM) was used to conduct this study. The kind of natural aggregates (schist and calcite-dolomite), the recycled concrete aggregates percentage (0%, 20%, 40% and 60%) and the water saturation (0% and 100%) were the pertinent factors for this methodology. Indirect tensile stress (ITS) was determined in mixtures fabricated with 0%, 20%, 40% and 60% recycled concrete aggregates. According to the results, the ITS of the bituminous mixtures increases as the percentage of recycled concrete aggregate increases. This behavior is more significant when calcite-dolomite is used as a natural aggregate. Water saturation has the same influence in both natural aggregates. The indirect tensile strength ratio (ITSR) was calculated to evaluate the stripping potential. According to the Spanish specifications, the results suggest that the percentage of CDW that can be used for hot mixes is 17% when schist is used as natural aggregate and 14% for calcite-dolomite.

Keywords: recycled concrete aggregate; construction and demolition waste; indirect tensile stress; hot-mix asphalt; response surface methodology (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

Downloads: (external link)
https://www.mdpi.com/2071-1050/11/13/3730/pdf (application/pdf)
https://www.mdpi.com/2071-1050/11/13/3730/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:11:y:2019:i:13:p:3730-:d:246626

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().