Design and performance evaluation of a new green pavement: 100% recycled asphalt pavement and 100% industrial solid waste

Zhao, Weitian; Yang, Qun

doi:10.1016/j.jclepro.2023.138483

Cited by 8 publications

(5 citation statements)

References 51 publications

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“…where α and h t+1 represent the learning step size and a weak base predictor, respectively. Defining −g t (x, y) := ∂L(y,s) ∂s | s=F t (x) , h t+1 can then be expressed as shown in Equation (10):…”

Section: Catboost Modelingmentioning

confidence: 99%

“…Within this framework, the road pavement construction field has always been particularly sensitive to sustainability issues, and for many years researchers have devoted their efforts to the reuse of so-called secondary raw materials [6][7][8][9][10][11]. Increasingly cuttingedge technological solutions have been developed to allow for end-of-life materials and Sustainability 2023, 15, 16337 2 of 15 industrial by-products to be properly recycled in the production of asphalt mixtures (AMs).…”

Section: Introductionmentioning

confidence: 99%

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Laboratory Investigation and Machine Learning Modeling of Road Pavement Asphalt Mixtures Prepared with Construction and Demolition Waste and RAP

Rondinella,

Oreto,

Abbondati

et al. 2023

Sustainability

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Due to the decreasing availability of virgin materials coupled with an increased awareness of environmental sustainability issues, many researchers have focused their efforts on investigating innovative technological solutions in the civil engineering domain. This paper aims to evaluate the suitability of construction and demolition waste (C and DW) and reclaimed asphalt pavement (RAP) reused within asphalt mixtures (AMs) prepared for the binder layer of road pavements. Both hot and cold mixing methodologies were investigated. The technical assessment was based on the volumetric and mechanical suitability, according to saturated surface dry voids (SSDV) and indirect tensile strength (ITS) tests carried out at 10 °C, respectively. Laboratory findings showed that all the hot AMs matched the desired target SSDV at the design gyrations number at different optimum bitumen content levels, alternatively showing a non-significant variation or a significant increase in ITS compared to conventional hot mix asphalt. Conversely, the cold AMs with cement and emulsion bitumen showed a greater volume of voids and moisture sensitivity, and lower temperature susceptibility compared to hot AMs, reaching, on average, 11% lower ITS when using coarse C and DW aggregates and 43% lower ITS when using filler from C and DW. These volumetric and mechanical properties were modeled by means of support vector machines and categorical boosting (CatBoost) machine learning algorithms. The results proved to be satisfactory, with CatBoost determination coefficients R2 referring to SSDV and ITS equal to 0.8678 and 0.9916, respectively. This allowed for the mechanical performance of these sustainable mixtures to be predicted with high accuracy and implemented within conventional mix design procedures.

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Section: Catboost Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laboratory Investigation and Machine Learning Modeling of Road Pavement Asphalt Mixtures Prepared with Construction and Demolition Waste and RAP

Rondinella,

Oreto,

Abbondati

et al. 2023

Sustainability

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“…Recognizing the economic importance of rural areas, systematic upgrades are essential to address degradation and yield profound economic benefits [7], fostering development and enhancing the quality of life for these communities [8]. Upgrading rural pavements is not just a technical necessity but a pivotal step towards sustainable development, ensuring the resilience and vitality of these transportation networks [9].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Rural Pavements with SBS-Modified Asphalt Binders and Petroleum Resin

Kim,

2024

Buildings

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This study addresses the imperative for enhancing asphalt mixtures tailored for rural pavements, focusing on optimizing RAP mixtures with styrene–butadiene–styrene (SBS)-modified asphalt binders incorporating petroleum resin and oil. Through systematic investigation, the study examines the impact of varying RAP content (25% and 50%) and two SBS-modified asphalt binder types (Type 1 and Type 2) on mechanical properties and sustainability. Laboratory tests reveal that the mix of 25% RAP + 75% Type 1 exhibits exceptional flexibility, evidenced by a high ductility value of 880 mm at 25 °C, enhancing pavement resilience. Conversely, the 50% RAP + 50% Type 2 mixture displays vulnerability to fatigue cracking, while 25% RAP + 75% Type 1 demonstrates superior resistance, with a fatigue vulnerability value of 1524 kPa. The Hamburg Wheel Tracking test highlights the influence of RAP content on rut depth, with the mix of 50% RAP + 50% Type 1 achieving the lowest rutting at 3.9 mm. Overlay test results show the mix of 25% RAP + 75% Type 2’s resilience, with the lowest load reduction at 64.5%, while the mix of 50% RAP + 50% Type 1 exhibits substantial load reduction at 82.1%. Field tests unveil differences in pavement bearing capacities, with the mix of 25% RAP + 75% Type 2 demonstrating a remarkable elastic modulus of 58.5 MPa, indicating heightened bearing capacity. The investigation underscores the significant role of SBS-modified asphalt binders with incorporated petroleum resin and oil in enhancing fatigue resistance for sustainable rural pavements.

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“…Zhao et al [25] investigated the impact of crumb rubber and reclaimed asphalt pavement on the viscoelastic properties of asphalt mixtures. Additionally, recent research [26][27][28][29][30] has conducted various studies on green pavements, rejuvenating agents, and rubberized asphalt mixtures. These studies collectively contribute significantly to advancing research into asphalt pavement, addressing aspects of performance, sustainability, and material innovation.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Viability of Waste Plastic Aggregate in Stone-Modified Asphalt Concrete Mix for Bus Rapid Transit Pavement Maintenance

Ohm,

Kim,

Kim

et al. 2023

Buildings

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This research takes on a scientific problem originating from the pervasive deterioration observed in the pavements of Bus Rapid Transit (BRT) systems, which presents formidable challenges to their durability and imposes significant financial burdens on BRT organizations. While wear and tear on BRT pavements is a widely recognized concern, there exists a pronounced deficiency in sustainable solutions to address this issue comprehensively. This study endeavored to bridge this scientific gap by exploring the option of incorporating waste plastic aggregate (WPA) and recycled asphalt pavement (RAP) into the pavement material. The series of comprehensive investigations commenced with an assessment of modified binders. We identified a 25% extracted RAP binder as the most suitable candidate. Our research next determined that a 4% WPA content offers optimal results when used as an aggregate replacement in a stone-modified asphalt concrete mix, which is further refined with a 13 mm nominal maximum aggregate size (NMAS) gradation, resulting in superior performance. Under double-load conditions of the Hamburg Wheel Tracking test, rutting in the 10 mm NMAS mixture rapidly increased to 9 mm after 12,400 HWT cycles, while the 13 mm NMAS mixture showed a more gradual ascent to the same critical rutting level after 20,000 HWT cycles (a 61% increase). Real-world application at a designated BRT station area in Seoul reinforced the findings, revealing that the use of 13 mm NMAS with 4% WPA and RAP significantly improved performance, reducing rutting to 75 µm and enhancing pavement resilience. This configuration increased Road Bearing Capacity (RBC) to 5400 MPa at the center zone, showcasing superior load-bearing capability. Conversely, the 10 mm NMAS mixture without RAP and WPA experienced severe rutting (220 µm) and a 76% reduction in RBC to 1300 MPa, indicating diminished pavement durability. In general, this research highlights the need for innovative solutions to address BRT pavement maintenance challenges and offers a novel, environmentally friendly, and high-performance alternative to traditional methods.

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Design and performance evaluation of a new green pavement: 100% recycled asphalt pavement and 100% industrial solid waste

Cited by 8 publications

References 51 publications

Laboratory Investigation and Machine Learning Modeling of Road Pavement Asphalt Mixtures Prepared with Construction and Demolition Waste and RAP

Laboratory Investigation and Machine Learning Modeling of Road Pavement Asphalt Mixtures Prepared with Construction and Demolition Waste and RAP

Optimizing Rural Pavements with SBS-Modified Asphalt Binders and Petroleum Resin

Assessing the Viability of Waste Plastic Aggregate in Stone-Modified Asphalt Concrete Mix for Bus Rapid Transit Pavement Maintenance

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