Comparative mechanistic-empirical analysis for design of alternative cold recycled asphalt technologies with conventional pavement

Arimilli, Sravani; Nagabhushana, M.N.; Jain, Pramod Kumar

doi:10.1080/14680629.2017.1338187

Cited by 10 publications

(6 citation statements)

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“…For any particular traffic condition, KENPAVE underestimates the tensile strains, and EverStressFE underestimates the compressive strains; the design was carried out by considering the severity of the output strains in both software. This variation in the predicted strains was similar to the determination of strains by Arimilli et al [ 17 ], who used the ANSYS and KENPAVE software. Table 2 presents the comparison of target strains and design strains.…”

Section: Resultssupporting

confidence: 82%

“…Polymers 2022, 14, x FOR PEER REVIEW 12 The resilient modulus represents the stiffness of the material when subjected to c pressive loading. Numerical investigations revealed that the enhanced stiffness o treated soil is crucial in reducing the thickness of the subsequent layers above the grade soil [17,19]. For a particular traffic intensity, the reduction in elastic modulus o subgrade directly impacts the thicknesses of its upper layers [19].…”

Section: Design Thickness Catalogmentioning

confidence: 99%

“…Luo and Prozzi [ 16 ] studied the variation in critical threshold strains using CIRCLY software and found that increasing the asphalt layer thickness to 250 mm resulted in negligible tensile strains. Arimilli et al [ 17 ] used mechanistic-empirical design to examine traditional and recycled pavement courses using KENPAVE, IITPAVE, and ANSYS and declared that a reduction in strain took place at the bottom of the bituminous layer for cold recycled asphalt layers. Arshad [ 18 ] performed mechanistic design on stabilized sub-base layer and improved the its resistance against failure strains.…”

Section: Introductionmentioning

confidence: 99%

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β-Glucan as a Sustainable Alternative to Stabilize Pavement Subgrade

Vishweshwaran¹,

Sujatha²

2022

Polymers

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Beta glucan (β-Glucan), a polysaccharide biopolymer, is used to improve the subgrade strength of clayey soils in an attempt to advocate a sustainable, carbon-neutral, and eco-friendly stabilizer. A design thickness catalog was developed for a three-layered flexible pavement using 3D finite element analysis (FEA) and layered elastic analysis. The analyses were performed for β-glucan-treated fine-grained soils with varying traffic intensities based on a mechanistic design philosophy conforming to IRC: 37-2018. Genetic programming (GP) was employed to obtain equations governing the rutting and fatigue failure in pavements. Thirty-nine datasets were used in the determination and analysis of critical strains governing the failure of a flexible pavement. Energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Zetasizer analysis, and pH tests of the β-glucan-treated soil revealed the mechanism of strength improvement of the fine-grained soils. The savings in cost for a 1 km stretch of the pavement were estimated to be 14.3%.

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Section: Resultssupporting

confidence: 82%

Section: Design Thickness Catalogmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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β-Glucan as a Sustainable Alternative to Stabilize Pavement Subgrade

Vishweshwaran¹,

Sujatha²

2022

Polymers

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“…The essential element of modelling a pavement structure, whether using a layered elastic or finite element method, is that simulation should interpret the representations of the pavement behavior in the field. Current structural design computer algorithms also use the mechanistic-empirical approach [54]. However, some computer tools such as AASHTOWare, KENPAVE, IITPAVE, BISAR, ANSYS, ABAQUS, and EVERTRESS are professional programs that engineers use to compute critical pavement responses in the x, y and z directions of the pavement structure [28].…”

Section: Computer Algorithmsmentioning

confidence: 99%

Roadway Pavement Design Methods, Structural Approaches and Relevant Computer Algorithms: A Critical Review

Mensahn¹,

Wada²,

Lugeiyamu³

2022

IJTET

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Transport and international agencies invest millions of dollars on road projects to support countries develop their infrastructure; therefore, it is important to ensure longer service life and value for money. The primary function of the pavement structure is to keep distresses, including fatigue cracking and permanent deformation, to an acceptable limit so that the pavement can withstand applied vehicle load and repetitions during the service duration. Furthermore, the layered structure of the pavement is intended to ensure that the vehicle contact pressure is distributed in such a way that critical responses at the bottom layer of the pavement are low enough to avoid severe damage. Two typical procedures associated with roadway pavement design are empirical-based and structural analysis methods. However, the empirical-based methods have significant shortcomings, as predicting the mode and extent of pavement performance becomes a major challenge. Alternatively, the structural analysis methods have advanced extensively with computers since they consider crucial factors such as traffic loads, material characteristics and environmental conditions. The imputation of these parameters into the computer algorithm contributes to a better understanding of the mechanical performance of constituent pavement material responses. The predicted responses enable highway engineers to select appropriate pavement compositions that will deteriorate at a satisfactory level during the time of service. The most common structural analysis approaches are analytical modelling and numerical simulation. On the other hand, differences in analysis results generation using these approaches have been a notable concern. This review article presents a synopsis of typical pavement design methods and the problem connected with them; structural approaches to identify factors influencing their accuracy. Furthermore, computer algorithms use due to their usefulness, and the assumptions of layered theories employed in pavement structural design are discussed to uncover potential drawbacks for future upgrades.

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“…Interest in studying and implementing pavement recycling techniques has increased in recent years because of the documented good performance, cost advantages, and environmental benefits of using these processes (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11). This has coincided with an increased use and study of reclaimed asphalt pavement (RAP) in pavement construction and maintenance also because of its economic and environmental benefits (12).…”

mentioning

confidence: 99%

Structural Performance of an Asphalt Pavement Containing Cold Central Plant Recycling and Full-Depth Reclamation

Diefenderfer

Flintsch

Xue

et al. 2022

Transportation Research Record: Journal of the Transportation R

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Pavement recycling techniques are often perceived as only applicable to lower traffic volume roadways. However, recent studies have shown their potential for long service lives in higher traffic volume applications. This study documented the response of an asphalt pavement section, constructed using full-depth reclamation (FDR) and cold central plant recycling (CCPR), on a portion of I-64 in Virginia reconstructed between 2016 and 2019. The pavement section was instrumented and the response was compared with a similarly instrumented pavement section (Section S12) placed at the National Center for Asphalt Technology (NCAT) Test Track in 2012. Previous studies have shown that Section S12 is a long-life pavement and it carried 30 million equivalent single axle loads (ESALs) while showing no evidence of deterioration at the pavement surface or from installed instrumentation. The results from the I-64 Segment II project showed that it had much lower horizontal strain values at the bottom of the asphalt layers but slightly higher vertical pressure values on top of the subgrade when compared with NCAT Section S12. Despite the slightly higher values (about 1 pounds per square inch [psi] difference), the vertical pressure on top of the subgrade was very low for both pavement sections. The study confirmed that a recycled pavement section could be constructed and result in low strain and pressure values and is expected to have a long service life in a high traffic volume environment.

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Comparative mechanistic-empirical analysis for design of alternative cold recycled asphalt technologies with conventional pavement

Cited by 10 publications

References 0 publications

β-Glucan as a Sustainable Alternative to Stabilize Pavement Subgrade

β-Glucan as a Sustainable Alternative to Stabilize Pavement Subgrade

Roadway Pavement Design Methods, Structural Approaches and Relevant Computer Algorithms: A Critical Review

Structural Performance of an Asphalt Pavement Containing Cold Central Plant Recycling and Full-Depth Reclamation

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