Effect of glass fibers and waste engine oil on the properties of RAP asphalt concretes

The increase in the cost of virgin materials and the environmental sustainability have contributed to increasing the incentive to use asphalt mixtures containing high percentages of recycled asphalt pavement (RAP). However, the use of high percentage of RAP into virgin asphalt mixture could negative...

Full description

Saved in:
Bibliographic Details
Published in:The international journal of pavement engineering 2022-12, Vol.23 (14), p.5227-5238
Main Authors: Eltwati, Ahmed Salama, Enieb, Mahmoud, Al-Saffar, Zaid H., Mohamed, Azman
Format: Article
Language:English
Subjects:
Aged binder
Asphalt mixes
Asphalt pavements
glass fiber
Glass fibers
Moisture effects
Moisture resistance
pavement rutting
Performance evaluation
reclaimed
sphalt pavement (RAP)
Tensile strength
waste engine oil (WEO)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The increase in the cost of virgin materials and the environmental sustainability have contributed to increasing the incentive to use asphalt mixtures containing high percentages of recycled asphalt pavement (RAP). However, the use of high percentage of RAP into virgin asphalt mixture could negatively affect the performance of some properties of asphalt mixtures. Thus, using an appropriate additive to offset the negative effect of RAP could lead to an increase in the amount of RAP in asphalt mixtures. Therefore, this study aimed to evaluate the effect of using glass fiber (GF) with different contents (0.0%, 0.1%, 0.2%, and 0.3%) as an additive on the performance of asphalt mixtures containing RAP materials (60%, 70%, and 80%) and rejuvenated with waste engine oil (WEO) i.e., 6%, 9%, and 12%. The performance of RAP mixtures incorporating GF was evaluated using the indirect tensile strength test (ITS), resilient modulus test, and moisture susceptibility test. Hamburg wheel track testing was done to evaluate the rutting performance of the 70% RAP mixture. The results showed that the GF modification enhanced the ITS, rutting resistance, moisture susceptibility, and resilient modulus of rejuvenated mixtures. It was also found that the GF content of 0.2% was the optimum.
ISSN:1029-8436
1477-268X
DOI:10.1080/10298436.2021.2001815