Laboratory and Field Testbed Evaluation of the Performance of Recycled Asphalt Mixture Using High-Penetration Asphalt
نویسندگان
چکیده
The application of recycled asphalt pavement (RAP) on a large scale is highly promoted to meet the current needs carbon neutrality and sustainable development purposes. However, majority RAP mixture productions are currently relying restoring effects provided by rejuvenators. Therefore, study focuses feasibility using high penetration binder (HPAB) in as replacement for conventional In this study, containing HPAB (RAP-H) was developed resolve cracking issue winter seasons owing rigid behavior aged binders. To verify applicability RAP-H mixture, results quality standard test mechanical performance were compared with reference having rejuvenator (RAP-R). Through fatigue test, Overlay Tester (OT) device, it found that all specimens did not reach 93% load reduction after 1000 OT cycles, indicating satisfied stress-bearing capacity. Additionally, highest dynamic modulus 27,275 MPa modified result 4.4% higher than mix. full-scale testbed, long-term field proposed approach verified through construction. measurement practice reveals elastic back-calculated from FWD (Falling Weight Deflectometer) increased more 50% RAP-R, which resulted excellent characteristics layer. addition efficiency surface layer, an improved sub-base subgrade layers section be at 28.6% 19.5%, respectively, RAP-R general, domestic international standards. confirmed possibility showing pavement.
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ژورنال
عنوان ژورنال: Buildings
سال: 2023
ISSN: ['2075-5309']
DOI: https://doi.org/10.3390/buildings13020529