Evaluation of Application of Thin HMA Overlay on the Existing Flexible Pavement for High-Traffic-Volume Rural Highways

Koohmishi, Mehdi; Palassi, Massoud

doi:10.3311/ppci.7128

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…A system of triggers that comprise various distress threshold values, including IRI and rutting, were then used to determine proper rehabilitation methods based on the rating results. Koohmishi and Palassi employed the MEPDG software to determine the appropriate time for application of thin asphalt overlay layer for typical flexible pavements that can service for 10 years without a necessity of structural overlay and then applied overlay layers on the existing pavement surface to investigate the overlay serviceability life ( 23 ). The results showed that the thin asphalt overlay layer extended the pavement service life significantly.…”

Section: Literature Reviewmentioning

confidence: 99%

Performance Evaluation and Prediction of Preservation Asphalt Overlay in Louisiana

Moon

Mahdi

et al. 2022

Transportation Research Record: Journal of the Transportation R

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The Louisiana Department of Transportation and Development (LaDOTD) has been using thin asphalt overlay (2 in.) as a preservation technique for asphalt-surface pavements. Although LaDOTD has specified the triggers for its application, it was not always applied on the recommended timing. It is unclear how the application timing affects the overlay performance. Additionally, no studies have been conducted to determine optimal application timing for the overlay and predict its performance using the available tools such as AASHTOWare Pavement Mechanistic-empirical design (Pavement ME) software. The objectives of the study are (1) to evaluate field performance of the preservation asphalt overlay and develop performance prediction models, (2) to determine optimal application timing for the overlay, and (3) to investigate if Pavement ME models are able to predict performance of the overlay by modifying model coefficients. To achieve the objectives, 33 preservation asphalt overlay projects were selected, and their performance was evaluated and predicted, then the optimal application timing was investigated based on the benefit and cost analysis. The results indicate that 58% of the preservation asphalt overlays had 10–20 years’ service life, and 42% had 7–10 years’ service life in relation to Pavement Condition Index threshold of 70. Additionally, good precondition or flexible base (asphalt concrete or unbounded base) can result in a longer service life in the overlay. It is also found that an average value of optimal timing of the next overlay application is the 9th year after construction. Finally, the rehabilitation models of asphalt overlay in Pavement ME software could be used for preservation asphalt overlay by modifying model coefficients.

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Section: Literature Reviewmentioning

confidence: 99%

Performance Evaluation and Prediction of Preservation Asphalt Overlay in Louisiana

Moon

Mahdi

et al. 2022

Transportation Research Record: Journal of the Transportation R

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“…Pavement repairing and maintenance are important works in road engineering. As the service time of the roads increases, problems such as insufficient friction, surface cracking, performance degradation, and appearance defects might occur to road surface, so targeted solutions are required for solving these issues [1]. Thin-layer overlays have received extensive attention ever since their inception.…”

Section: Introductionmentioning

confidence: 99%

Road Performance of an Overlay Material Improved by Rubber Powder Dry-Processing Method in Cold Regions

Liu¹,

Liu²,

Qiu³

et al. 2022

EESRJ

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This paper studied a thin-layer overlay material used in cold regions, aiming to solve the contradiction between the low-temperature crack resistance and skid resistance of asphalt mixture. At first, this paper adopted a dry-processing method to solve the possible segregation problem of Rubber Powder (RP)-modified asphalt in real engineering practice, the proportion of minerals in the proposed material was adjusted within the grading range of Stone Mastic Asphalt (SMA)-10 for the purpose of attaining asphalt mixture that has satisfactory strength and usability. Then, the proposed material was subject to low-temperature splitting test and Cantabro raveling test to verify its lowtemperature cracking resistance and disintegration resistance, and two parameters British Pendulum Number (BPN) and Mean Profile Depth (MPD) were applied to evaluate the skid resistance of the proposed thin-layer overlay material, and the test results showed that, the proposed RP-modified asphalt processed by the dry method had very good lowtemperature performance, the medium-coarse SMA-10 gradation can well balance the strength and skid resistance of the material, and enhance the applicability of thin-layer overlay material in cold regions.

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Preparation Process and Performance of Polyurethane-Modified Bitumen for Ultrathin Asphalt Layers

Jiang

Huang

Cui

et al. 2023

J. Mater. Civ. Eng.

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Evaluation of Application of Thin HMA Overlay on the Existing Flexible Pavement for High-Traffic-Volume Rural Highways

Abstract: Thin hot mix asphalt (HMA)

Cited by 3 publications

References 10 publications

Performance Evaluation and Prediction of Preservation Asphalt Overlay in Louisiana

Performance Evaluation and Prediction of Preservation Asphalt Overlay in Louisiana

Road Performance of an Overlay Material Improved by Rubber Powder Dry-Processing Method in Cold Regions

Preparation Process and Performance of Polyurethane-Modified Bitumen for Ultrathin Asphalt Layers

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