TY  - 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 . .