This study investigates the feasibility of using recycled concrete aggregate (RCA) as a partial substitution of natural aggregate in pavement engineering. Despite RCA’s good properties, such as polishing value and freeze-thaw resistance, its use is limited by low resistance to fragmentation and high-water absorption. This paper parent the experimental results of mineralogical-petrographic and physical-mechanical properties of RCA, natural stone (dolerite) and their combination (RCA content—15%, 30%, 45%, and 60%). The tested granular mixtures showed good resistance to fragmentation and wear (LA 22–27%, MDE 14–15%), as well as satisfactory Polished Stone Value of 55–57, which means they can be used in different layers of pavement structures. According to the obtained testing results, the application of RCA is possible in different flexible and rigid pavement layers and for various traffic loads.
Keywords:
RCA / dolerite / pavement / Polished Stone Value / fragmentation / micro-Deval / petrography / mineralogy / technical requirements
TY - JOUR
AU - Đokić, Olivera
AU - Radević, Aleksandar
AU - Zakić, Dimitrije
AU - Đokić, Božidar
PY - 2020
UR - https://grafar.grf.bg.ac.rs/handle/123456789/2055
AB - This study investigates the feasibility of using recycled concrete aggregate (RCA) as a partial substitution of natural aggregate in pavement engineering. Despite RCA’s good properties, such as polishing value and freeze-thaw resistance, its use is limited by low resistance to fragmentation and high-water absorption. This paper parent the experimental results of mineralogical-petrographic and physical-mechanical properties of RCA, natural stone (dolerite) and their combination (RCA content—15%, 30%, 45%, and 60%). The tested granular mixtures showed good resistance to fragmentation and wear (LA 22–27%, MDE 14–15%), as well as satisfactory Polished Stone Value of 55–57, which means they can be used in different layers of pavement structures. According to the obtained testing results, the application of RCA is possible in different flexible and rigid pavement layers and for various traffic loads.
PB - MDPI
T2 - Minerals
T1 - Potential of Natural and Recycled Concrete Aggregate Mixtures for Use in Pavement Structures
IS - 744
VL - 10
DO - https://doi.org/10.3390/min10090744
ER -
@article{
author = "Đokić, Olivera and Radević, Aleksandar and Zakić, Dimitrije and Đokić, Božidar",
year = "2020",
abstract = "This study investigates the feasibility of using recycled concrete aggregate (RCA) as a partial substitution of natural aggregate in pavement engineering. Despite RCA’s good properties, such as polishing value and freeze-thaw resistance, its use is limited by low resistance to fragmentation and high-water absorption. This paper parent the experimental results of mineralogical-petrographic and physical-mechanical properties of RCA, natural stone (dolerite) and their combination (RCA content—15%, 30%, 45%, and 60%). The tested granular mixtures showed good resistance to fragmentation and wear (LA 22–27%, MDE 14–15%), as well as satisfactory Polished Stone Value of 55–57, which means they can be used in different layers of pavement structures. According to the obtained testing results, the application of RCA is possible in different flexible and rigid pavement layers and for various traffic loads.",
publisher = "MDPI",
journal = "Minerals",
title = "Potential of Natural and Recycled Concrete Aggregate Mixtures for Use in Pavement Structures",
number = "744",
volume = "10",
doi = "https://doi.org/10.3390/min10090744"
}
Đokić, O., Radević, A., Zakić, D.,& Đokić, B.. (2020). Potential of Natural and Recycled Concrete Aggregate Mixtures for Use in Pavement Structures. in Minerals
MDPI., 10(744).
https://doi.org/https://doi.org/10.3390/min10090744
Đokić O, Radević A, Zakić D, Đokić B. Potential of Natural and Recycled Concrete Aggregate Mixtures for Use in Pavement Structures. in Minerals. 2020;10(744).
doi:https://doi.org/10.3390/min10090744 .
Đokić, Olivera, Radević, Aleksandar, Zakić, Dimitrije, Đokić, Božidar, "Potential of Natural and Recycled Concrete Aggregate Mixtures for Use in Pavement Structures" in Minerals, 10, no. 744 (2020),
https://doi.org/https://doi.org/10.3390/min10090744 . .
