Field Evaluation and Cost-Effectiveness of Saw and Seal Method to Control Reflection Cracking in Composite Pavements

Elseifi, Mostafa A.; Bandaru, Rakesh; Zhang, Zhongjie; Ismail, Said

doi:10.3141/2227-04

Cited by 10 publications

(9 citation statements)

References 5 publications

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“…This suggests that saw and seal treatment used in the preservation asphalt overlay is effective to control reflection cracking. The similar finding was reported by Elseifi et al ( 27 ).…”

Section: Resultssupporting

confidence: 92%

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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“…This suggests that saw and seal treatment used in the preservation asphalt overlay is effective to control reflection cracking. The similar finding was reported by Elseifi et al ( 27 ).…”

Section: Resultssupporting

confidence: 92%

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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“…Saw cuts made in the HMA overlay were both transverse and longitudinal. The study found that the saw and seal method was an overall success in increasing the service life of the pavement [5]. Seven test sections indicated an increase in service life ranging from 4 to 12 years and six of the test sections indicated an increase in service life of 3 years, resulting in an expected average increase in service life of 4 years.…”

Section: Figurementioning

confidence: 94%

“…In Louisiana, the saw and seal method used on 15 composite pavements were evaluated for their cost-effectiveness and effectiveness in reducing reflective cracking [5]. The sections, monitored for a period of six or more years, experienced average annual daily traffic (AADT) ranging from 1,800 to 50,250, along with varying climate conditions.…”

Section: Figurementioning

confidence: 99%

Exploring the use of the saw and seal method for mitigation of reflective cracking in composite pavements

Arhin

Noel

Wright

et al. 2012

WIT Transactions on the Built Environment

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Reflective cracking, a common distress that affects composite highway pavements, is caused by cyclical movements of the underlying concrete base that is overlaid with hot-mix-asphalt in reaction to climatic and traffic conditions. A saw and seal method, which involves making saw cuts in the overlaying asphalt, (above the concrete joints) and sealing them with a compressible rubberized low modulus material, was studied for its effectiveness in mitigating reflective cracking in newly constructed pavements in Washington DC. In the 4½ year field study, the widths of the transverse and longitudinal saw-cuts made in the hot-mix-asphalt overlay were measured every three months at 22 saw-cut points. Multiple regression analyses and statistical tests of significance were conducted to determine the statistical relationship between the changes in mean daily air temperature, average daily traffic, pavement age and the variations of the sawcut widths. The interactions of changes in mean daily air temperature and ADT had a statistically significant impact on variations in transverse and longitudinal saw-cut widths, accounting for 95.7% and 91.4% of variations respectively. Pavement age also had a significant impact but was excluded due to multicollinearity with ADT. In conjunction with the statistical analyses, a visual condition comparison with a similar adjacent pavement section built without any saw-cut treatments showed that the saw and seal method effectively controlled reflective cracking in the composite pavement.

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“…Road segments were selected to represent different pavement conditions as described by the pavement condition index and with varying hot-mix asphalt thickness and base type. The pavement condition index varies from 95 to 100, 85 to 94, 65 to 84, 50 to 64, and 49 or less for very good, good, fair, poor, and very poor roads, respectively (12). Traffic volume widely varied in the selected sections, from an annual average daily traffic of 244 to 29,357; these traffic volumes ranged from low to heavy.…”

Section: Experimental Program Rwd Testingmentioning

confidence: 99%

Model to Estimate Pavement Structural Number at Network Level with Rolling Wheel Deflectometer Data

Abdelkhalek

Elseifi

Gaspard

et al. 2012

Transportation Research Record

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Nondestructive testing provides key information about the structural integrity and the capacity of in-service pavements. The rolling wheel deflectometer (RWD) was introduced to support existing nondestructive testing techniques by providing a screening tool for structurally deficient pavements at the network level. The objective of this study was to develop and validate a direct and simple model for determining the pavement structural number (SN) by using RWD deflection data. To achieve this objective, the relationship between the average RWD surface deflection and the peak falling weight deflectometer (FWD) deflection was investigated. The developed model correlated pavement SN with three RWD-measured properties: average and standard deviation of RWD deflection and RWD index. The developed model was fitted to RWD data collected in 16 road sections (each 1.5 mi long), referred to as research sites, in Louisiana. The model was then validated on the basis of data from the FWD and RWD collected on 52 road sections in Louisiana. Results showed agreement between SN calculations obtained from FWD and those from RWD deflection testing. Although the developed model is independent of pavement thickness and layer properties, it provides promising results as an indicator of pavement structural integrity at the network level. The fitting statistics support the use of the proposed model as a screening tool for identifying structurally deficient pavements at the network level.

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Field Evaluation and Cost-Effectiveness of Saw and Seal Method to Control Reflection Cracking in Composite Pavements

Cited by 10 publications

References 5 publications

Performance Evaluation and Prediction of Preservation Asphalt Overlay in Louisiana

Performance Evaluation and Prediction of Preservation Asphalt Overlay in Louisiana

Exploring the use of the saw and seal method for mitigation of reflective cracking in composite pavements

Model to Estimate Pavement Structural Number at Network Level with Rolling Wheel Deflectometer Data

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