Hydraulic and environmental impacts of using recycled asphalt pavement on highway shoulders

Mijic, Zorana; Dayioğlu, Asli Y.; Hatipoğlu, Mustafa; Aydilek, Ahmet H.

doi:10.1016/j.conbuildmat.2019.117226

Cited by 18 publications

(6 citation statements)

References 65 publications

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“…Ten of the eleven articles reviewed had information about the methodology used to collect the RAP. In 3 investigations, plant recycling was used [20][21][22], and in the remaining 7, the milling technique was used [23][24][25][26][27][28][29].…”

Section: Ways To Collect Characterize and Incorporate Rap In The Prep...mentioning

confidence: 99%

Theoretical analysis of waste cooking oil rejuvenator in reclaimed asphalt for sustainable hot asphalt mix preparation at the Área Metropolitana de Bucaramanga

Peñaloza

Vásquez²,

Valdivieso³

et al. 2022

DYNA

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Reusing reclaimed asphalt pavements (RAPs) provides economic, social, and environmental benefits. To improve the performance of these materials, rejuvenating agents such as waste cooking oil (WCO) have been implemented. The annual amounts of RAP and WCO available in the Área Metropolitana de Bucaramanga (AMB) were calculated to be 32 thousand and 22 thousand tons per year, respectively. Subsequently, international standards were reviewed and compared with Colombian regulations to establish a methodology to determine the appropriate percentage of WCO to add to RAP for hot asphalt mix preparation. The authors suggest investigating WCO levels from 3% to 6% and selecting the percentage that reestablishes the penetration grade (INV-E-706-13), softening point (INV-E-712-13), and viscosity (INV-E-717 -13) of asphalt binder. For hot asphalt mix preparation, the authors propose using the Marshall method and determining the appropriate percentage of asphalt according to stability and flow tests (INV-E-748-13), percent air voids (INV-E-736-13), and bulk density (INV-E-733-13).3).

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Section: Ways To Collect Characterize and Incorporate Rap In The Prep...mentioning

confidence: 99%

Theoretical analysis of waste cooking oil rejuvenator in reclaimed asphalt for sustainable hot asphalt mix preparation at the Área Metropolitana de Bucaramanga

Peñaloza

Vásquez²,

Valdivieso³

et al. 2022

DYNA

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show abstract

“…Considering that one kilometer of road with a width of 10 m and a thickness of 150 mm requires 3750 tons of hot-mix asphalt (HMA), millions of tons of recycled asphalt pavement (RAP) are produced annually during road maintenance [7]. The amount of RAP stored in the world's developed countries amounts to one billion tons, of which only 47% has been used in the construction of new pavements [8][9][10]. However, using RAP in asphalt mixtures can significantly reduce carbon footprints and increase economic efficiency [4].…”

Section: Introductionmentioning

confidence: 99%

Carbon Sequestration via Bituminous Composites Containing Recycled High-Density Polyethylene

Sadeghi,

Goli,

Fini

2024

J. Compos. Sci.

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This paper presents an innovative bituminous composite containing recycled high-density polyethylene (HDPE) as a means of carbon sequestration. To prepare the composite, rejuvenators and recycled HDPE were introduced to reclaimed asphalt pavement (RAP), separately and in combination. To evaluate efficacy of rejuvenators, this study used the following three rejuvenators: waste engine oil (WEO), oleic acid (OA), and vacuum bottom (VB). The performance of the bituminous composite containing HDPE and rejuvenators was evaluated using the indirect tensile fatigue test, the rutting resistance test, the resilient modulus test, and the semi-circular bending test. Results showed that applying a combination of rejuvenators and recycled HDPE improved the resistance to fatigue, rutting, and cracking. Particularly, in terms of improving resistance to cracking, OA proved to be the most effective rejuvenator, followed by WEO and VB. In all bituminous composites studied here, the hybrid application of HDPE and rejuvenator proved to be more effective than the rejuvenator or HDPE alone.

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“…Empirical tests, conducted both in laboratories and in field conditions, offer valuable insights, for instance, the mixed-method [1] investigation of Nam et al into the impact of test conditions on the hydraulic conductivity of natural coarse-grained soils. However, the accuracy of such empirical tests is susceptible to factors like specimen preparation and boundary conditions [2][3][4][5][6][7][8], which demand rigorous operational protocols and equipment. In contrast, numerical simulations leverage finite or discrete elements to model real-world coarse-grained soils [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Deep-Learning-Enhanced CT Image Analysis for Predicting Hydraulic Conductivity of Coarse-Grained Soils

Peng

Shen

Zhang

et al. 2023

Water

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Permeability characteristics in coarse-grained soil is pivotal for enhancing the understanding of its seepage behavior and effectively managing it, directly impacting the design, construction, and operational safety of embankment dams. Furthermore, these insights bridge diverse disciplines, including hydrogeology, civil engineering, and environmental science, broadening their application and relevance. In this novel research, we leverage a Convolutional Neural Network (CNN) model to achieve the accurate segmentation of coarse-grained soil CT images, surpassing traditional methods in precision and opening new avenues in soil granulometric analysis. The three-dimensional (3D) models reconstructed from the segmented images attest to the effectiveness of our CNN model, highlighting its potential for automation and precision in soil-particle analysis. Our study uncovers and validates new empirical formulae for the ideal particle size and the discount factor in coarse-grained soils. The robust linear correlation underlying these formulae deepens our understanding of soil granulometric characteristics and predicts their hydraulic behavior under varying gradients. This advancement holds immense value for soil-related engineering and hydraulic applications. Furthermore, our findings underscore the significant influence of granular composition, particularly the concentration of fine particles, on the tortuosity of water-flow paths and the discount factor. The practical implications extend to multiple fields, including water conservancy and geotechnical engineering. Altogether, our research represents a significant step in soil hydrodynamics research, where the CNN model’s application unveils key insights into soil granulometry and hydraulic conductivity, laying a strong foundation for future research and applications.

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Hydraulic and environmental impacts of using recycled asphalt pavement on highway shoulders

Cited by 18 publications

References 65 publications

Theoretical analysis of waste cooking oil rejuvenator in reclaimed asphalt for sustainable hot asphalt mix preparation at the Área Metropolitana de Bucaramanga

Theoretical analysis of waste cooking oil rejuvenator in reclaimed asphalt for sustainable hot asphalt mix preparation at the Área Metropolitana de Bucaramanga

Carbon Sequestration via Bituminous Composites Containing Recycled High-Density Polyethylene

Deep-Learning-Enhanced CT Image Analysis for Predicting Hydraulic Conductivity of Coarse-Grained Soils

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