The Impact of Recycled Concrete Aggregate on the Stiffness, Fatigue, and Low-Temperature Performance of Asphalt Mixtures for Road Construction
Autori
Radević, AleksandarIsailović, Ivan
Wistuba, Michael
Zakić, Dimitrije
Orešković, Marko
Mladenović, Goran
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
The need for road (re)construction materials is constantly growing. At the same time, there
is a limited quantity of new, high-quality materials available and a buildup of secondary/recycled
construction materials. One possible solution may be the use of recycled concrete aggregate (RCA) in asphalt mixtures instead of natural aggregate (NA), which also promotes economic and environmental sustainability. The potential use of fine and coarse RCA in road asphalt mixtures is analyzed in this work. Nine asphalt mixtures were tested for base course layers, where RCA was used as a NA substitute. The impact of the quantity of RCA (up to 45% by mass) on the resulting physical and mechanical properties of asphalt mixtures was investigated, and consequently compared with the properties of a reference control mixture produced with NA only. Results reveal that the addition of RCA requires higher bitumen in comparison to the control mixture (up to 1%). Consequently, mixtures with RCA had 15-20% lo...wer stiffness and up to 26% higher critical fatigue strain value (E6). Although RCA mixtures contained more bitumen, their low-temperature resistance was slightly inferior compared with the control mixture (failure temperatures were up to 4.3 C higher). In conclusion, asphalt mixtures with up to 45% RCA can be used without substantially reducing performance.
Ključne reči:
asphalt mixture / recycled concrete aggregate / complex modulus / fatigue resistance / low-temperature resistanceIzvor:
Sustainability, 2020, 12Izdavač:
- MDPI
Finansiranje / projekti:
- Istraživanje mogućnosti primene otpadnih i recikliranih materijala u betonskim kompozitima, sa ocenom uticaja na životnu sredinu, u cilju promocije održivog građevinarstva u srbiji (RS-MESTD-Technological Development (TD or TR)-36017)
- Istraživanje stanja i metoda unapređenja građevinskih konstrukcija sa aspekta upotrebljivosti, nosivosti, ekonomičnosti i održavanja (RS-MESTD-Technological Development (TD or TR)-36048)
DOI: 10.3390/su12103949
ISSN: 2071-1050
WoS: 000543421400007
Scopus: 2-s2.0-85085642008
Institucija/grupa
GraFarTY - JOUR AU - Radević, Aleksandar AU - Isailović, Ivan AU - Wistuba, Michael AU - Zakić, Dimitrije AU - Orešković, Marko AU - Mladenović, Goran PY - 2020 UR - https://grafar.grf.bg.ac.rs/handle/123456789/1996 AB - The need for road (re)construction materials is constantly growing. At the same time, there is a limited quantity of new, high-quality materials available and a buildup of secondary/recycled construction materials. One possible solution may be the use of recycled concrete aggregate (RCA) in asphalt mixtures instead of natural aggregate (NA), which also promotes economic and environmental sustainability. The potential use of fine and coarse RCA in road asphalt mixtures is analyzed in this work. Nine asphalt mixtures were tested for base course layers, where RCA was used as a NA substitute. The impact of the quantity of RCA (up to 45% by mass) on the resulting physical and mechanical properties of asphalt mixtures was investigated, and consequently compared with the properties of a reference control mixture produced with NA only. Results reveal that the addition of RCA requires higher bitumen in comparison to the control mixture (up to 1%). Consequently, mixtures with RCA had 15-20% lower stiffness and up to 26% higher critical fatigue strain value (E6). Although RCA mixtures contained more bitumen, their low-temperature resistance was slightly inferior compared with the control mixture (failure temperatures were up to 4.3 C higher). In conclusion, asphalt mixtures with up to 45% RCA can be used without substantially reducing performance. PB - MDPI T2 - Sustainability T1 - The Impact of Recycled Concrete Aggregate on the Stiffness, Fatigue, and Low-Temperature Performance of Asphalt Mixtures for Road Construction VL - 12 DO - 10.3390/su12103949 ER -
@article{ author = "Radević, Aleksandar and Isailović, Ivan and Wistuba, Michael and Zakić, Dimitrije and Orešković, Marko and Mladenović, Goran", year = "2020", abstract = "The need for road (re)construction materials is constantly growing. At the same time, there is a limited quantity of new, high-quality materials available and a buildup of secondary/recycled construction materials. One possible solution may be the use of recycled concrete aggregate (RCA) in asphalt mixtures instead of natural aggregate (NA), which also promotes economic and environmental sustainability. The potential use of fine and coarse RCA in road asphalt mixtures is analyzed in this work. Nine asphalt mixtures were tested for base course layers, where RCA was used as a NA substitute. The impact of the quantity of RCA (up to 45% by mass) on the resulting physical and mechanical properties of asphalt mixtures was investigated, and consequently compared with the properties of a reference control mixture produced with NA only. Results reveal that the addition of RCA requires higher bitumen in comparison to the control mixture (up to 1%). Consequently, mixtures with RCA had 15-20% lower stiffness and up to 26% higher critical fatigue strain value (E6). Although RCA mixtures contained more bitumen, their low-temperature resistance was slightly inferior compared with the control mixture (failure temperatures were up to 4.3 C higher). In conclusion, asphalt mixtures with up to 45% RCA can be used without substantially reducing performance.", publisher = "MDPI", journal = "Sustainability", title = "The Impact of Recycled Concrete Aggregate on the Stiffness, Fatigue, and Low-Temperature Performance of Asphalt Mixtures for Road Construction", volume = "12", doi = "10.3390/su12103949" }
Radević, A., Isailović, I., Wistuba, M., Zakić, D., Orešković, M.,& Mladenović, G.. (2020). The Impact of Recycled Concrete Aggregate on the Stiffness, Fatigue, and Low-Temperature Performance of Asphalt Mixtures for Road Construction. in Sustainability MDPI., 12. https://doi.org/10.3390/su12103949
Radević A, Isailović I, Wistuba M, Zakić D, Orešković M, Mladenović G. The Impact of Recycled Concrete Aggregate on the Stiffness, Fatigue, and Low-Temperature Performance of Asphalt Mixtures for Road Construction. in Sustainability. 2020;12. doi:10.3390/su12103949 .
Radević, Aleksandar, Isailović, Ivan, Wistuba, Michael, Zakić, Dimitrije, Orešković, Marko, Mladenović, Goran, "The Impact of Recycled Concrete Aggregate on the Stiffness, Fatigue, and Low-Temperature Performance of Asphalt Mixtures for Road Construction" in Sustainability, 12 (2020), https://doi.org/10.3390/su12103949 . .