Evaluation of Thermal Aging Susceptibility of Recycled Waste Plastic Aggregates (Low-Density Polyethylene, High-Density Polyethylene, and Polypropylene) in Recycled Asphalt Pavement Mixtures DOI Open Access
Yeong-Min Kim, Kyungnam Kim

Polymers, Год журнала: 2025, Номер 17(6), С. 731 - 731

Опубликована: Март 10, 2025

The increasing demand for sustainable road construction materials necessitates innovative solutions to overcome the challenges of Recycled Asphalt Pavement (RAP), including aged binder brittleness, reduced flexibility, and durability concerns. Waste Plastic Aggregates (WPA) offer a promising alternative; however, their thermal aging behavior interactions with RAP remain insufficiently understood. This study evaluates performance RAP-based asphalt mixtures, incorporating three types WPA—Low-Density Polyethylene (LDPE), High-Density (HDPE), Polypropylene (PP)—under conditions: mild (60 °C 7 days), moderate (80 14 severe (100 30 days). mixtures were designed 30% content, 10% 20% WPA by aggregate weight, SBS-modified rejuvenated 2% 4% sewage sludge bio-oil weight. It is considered that may impact in mixtures; therefore, this mechanical properties LDPE, HDPE, PP under varying conditions address these challenges. results showed significantly enhanced performance, durability, sustainability mixtures. Marshall Stability increased 12–23%, values ranging from 12.6 13.2 kN WPA-enhanced compared 12.7 control. ITS improved 15–20% dry (1.34–1.44 MPa) 12–18% wet (1.15–1.19 MPa), TSR reaching up 82.64%. Fatigue life was extended 28–43%, load cycles 295,600 control 352,310 High-temperature improvement softening point (57.3 61.2 °C) 23% increase rutting resistance, rut depths decreasing 7.1 mm 5.45 after 20,000 passes. These demonstrate combining RAP, WPA, produces superior environmental stressors, offering robust high-demand applications modern infrastructure.

Язык: Английский

A review on the incorporation of reclaimed asphalt pavement material in asphalt pavements: management practices and strategic techniques DOI
Mayank Sukhija, Erdem Coleri

Road Materials and Pavement Design, Год журнала: 2025, Номер unknown, С. 1 - 40

Опубликована: Фев. 27, 2025

The incorporation of high RAP imparts several pavement-related concerns, viz. long-term performance, stiffening effect, blending issues, and environmental burdens, thus limiting their use within 10–30%. An attempt has been made to compile the inferences observations past studies incorporating in asphalt pavement. Emphasis was on adoption a proper management scheme facilitate with little variability. Details different strategic techniques, such as rejuvenators, warm mix (WMA) technologies, binder grade bumping, higher content, etc., for improving content have described. Additionally, challenges remedial measures adopted existing reported. Overall, this review could provide an overview best strategies improve content. It also assist choosing practices stockpiles achieve level uniformity mixture RAP.

Язык: Английский

Процитировано

3
Evaluation of Thermal Aging Susceptibility of Recycled Waste Plastic Aggregates (Low-Density Polyethylene, High-Density Polyethylene, and Polypropylene) in Recycled Asphalt Pavement Mixtures DOI Open Access
Yeong-Min Kim, Kyungnam Kim

Polymers, Год журнала: 2025, Номер 17(6), С. 731 - 731

Опубликована: Март 10, 2025

The increasing demand for sustainable road construction materials necessitates innovative solutions to overcome the challenges of Recycled Asphalt Pavement (RAP), including aged binder brittleness, reduced flexibility, and durability concerns. Waste Plastic Aggregates (WPA) offer a promising alternative; however, their thermal aging behavior interactions with RAP remain insufficiently understood. This study evaluates performance RAP-based asphalt mixtures, incorporating three types WPA—Low-Density Polyethylene (LDPE), High-Density (HDPE), Polypropylene (PP)—under conditions: mild (60 °C 7 days), moderate (80 14 severe (100 30 days). mixtures were designed 30% content, 10% 20% WPA by aggregate weight, SBS-modified rejuvenated 2% 4% sewage sludge bio-oil weight. It is considered that may impact in mixtures; therefore, this mechanical properties LDPE, HDPE, PP under varying conditions address these challenges. results showed significantly enhanced performance, durability, sustainability mixtures. Marshall Stability increased 12–23%, values ranging from 12.6 13.2 kN WPA-enhanced compared 12.7 control. ITS improved 15–20% dry (1.34–1.44 MPa) 12–18% wet (1.15–1.19 MPa), TSR reaching up 82.64%. Fatigue life was extended 28–43%, load cycles 295,600 control 352,310 High-temperature improvement softening point (57.3 61.2 °C) 23% increase rutting resistance, rut depths decreasing 7.1 mm 5.45 after 20,000 passes. These demonstrate combining RAP, WPA, produces superior environmental stressors, offering robust high-demand applications modern infrastructure.

Язык: Английский

Процитировано

0