Evaluation of Performance and Design of Ultra-Thin Whitetopping (Bonded Concrete Resurfacing) Using Large-Scale Accelerated Pavement Testing

Newbolds, Scott

doi:10.5703/1288284314322

Cited by 7 publications

(4 citation statements)

References 5 publications

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“…(showed as discrete points) considering a value of k of 400 lb/in 3 (Newbolds & Olek, 2008). The experimental values of s I estimated in this section considered a prescribed traffic load of 9000 lb.…”

Section: 6mentioning

confidence: 99%

Removing Obstacles for Pavement Cost Reduction by Examining Early Age Opening Requirements: Material Properties

Antico¹,

Esmaeeli²,

Varga³

et al. 2015

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JOINT TRANSPORTATION RESEARCH PROGRAMThe Joint Transportation Research Program serves as a vehicle for INDOT collaboration with higher education institutions and industry in Indiana to facilitate innovation that results in continuous improvement in the planning, design, construction, operation, management and economic efficiency of the Indiana transportation infrastructure. https://engineering.purdue.edu/JTRP/index_html Published reports of the Joint Transportation Research Program are available at: http://docs.lib.purdue.edu/jtrp/ NOTICEThe contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views and policies of the Indiana Department of Transportation or the Federal Highway Administration. The report does not constitute a standard, specification, or regulation. COPYRIGHT AbstractThe risk of cracking in a concrete pavement that is opened to traffic at early ages is related to the maximum tensile stress, I , that develops in the pavement and its relationship to the measured, age dependent, flexural strength of a beam, r f . The stress that develops in the pavement is due to several factors including traffic loading and restrained volume change caused by thermal or hygral variations. The stress that develops is also dependent on the time-dependent mechanical properties, pavement thickness, and subgrade stiffness. There is a strong incentive to open many pavements to traffic as early as possible to allow construction traffic or traffic from the traveling public to use the pavement. However, if the pavement is opened to traffic too early, cracking may occur that may compromise the service life of the pavement. The purpose of this report is two-fold: 1) to examine the current opening strength requirements for concrete pavements (typically a flexural strength from beams, r f ) and 2) to propose a criterion based on the timedependent changes of r I f  which accounts for pavement thickness and subgrade stiffness without adding unnecessary risk for premature cracking. An Accelerated Pavement Testing, APT, facility was used to test concrete pavements that are opened to traffic at an early age to provide data that can be compared with an analytical model to determine the effective r I f  based on the relevant features of the concrete pavement, the subgrade, and the traffic load. It is anticipated that this type of opening criteria can help the decision makers in two ways: 1) it can open pavement sections earlier thereby reducing construction time and 2) it may help to minimize the use of materials with overly accelerated strength gain that are suspected to be more susceptible to develop damage at early ages than materials that gain strength more slowly. Key Wordsaccelerated pavement testing, concrete pavement, cracking, early age concrete, opening criteria Distribution StatementNo restrictions. This document is available to the public through the National Technical Information Se...

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Section: 6mentioning

confidence: 99%

Removing Obstacles for Pavement Cost Reduction by Examining Early Age Opening Requirements: Material Properties

Antico¹,

Esmaeeli²,

Varga³

et al. 2015

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“…A recently conducted APT experiment in California indicated that a well designed BCOA on top of an AC layer could provide 20 years of service life on most of California’s roadways ( 9 ). Investigations have also been carried out to find the variation in performance between plain concrete and concrete with admixture and fiber ( 10 , 11 ). Several studies also confirm that a good bond within the interface of the concrete and AC layer is essential for the overall performance of the BCOA ( 2 , 7 ).…”

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confidence: 99%

Evaluation of Bonded Concrete Overlay of Asphalt under Accelerated Loading

Mahdi

Rupnow

2020

Transportation Research Record

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Bonded concrete overlay of asphalt (BCOA), previously known as ultra-thin whitetopping (UTW), has been widely used to repair aged asphalt concrete (AC) pavements with moderate distresses. Because of the increasing costs of roadway maintenance, Louisiana has a great interest in determining whether thin BCOA (usually 2–6 in.) is a suitable and cost-effective alternative to the current practice of roadway maintenance. The objective of the study was to evaluate the performance of BCOA pavement and to identify the influence of in-situ interface bond strength on the performance of BCOA pavements. Three full-scale BCOA test sections with thicknesses of 6 in., 4 in., and 2 in. of Portland cement concrete (PCC) over an aged asphalt pavement were tested under accelerated pavement test (APT) loading under typical pavement conditions in southern Louisiana. Each section was trafficking-loaded to a failure (i.e., all the slabs in the loading path were cracked) under alternating load magnitudes of 9 kips and 16 kips of the ATLaS dual-tire wheel load. A falling weight deflectometer (FWD) backcalculated the effective thickness, a trench-cutting investigation was undertaken, and in-situ pull-off test revealed that a good bond was established initially between the PCC and AC layer. Several non-destructive test (NDT) methods indicated that the distresses of a BCOA slab could be coupled with a possible debonding at the PCC-asphalt interface. This paper mainly focuses on the APT results and the performance of BCOA test sections with different overlay thickness.

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“…Other studies used a layered-elastic-analysis backcalculation process to determine layer modulus values of a BCOA airport runway in Tennessee (14) and a state highway in Iowa (15). Finally, the radius of relative stiffness was backcalculated with the AASHTO 1998 method for an accelerated pavement test section of BCOA with established values for both the thickness and modulus of the asphalt and concrete layers (16). Because BCOA projects have finite-sized slabs and variable joint load transfer efficiency (LTE), backcalculations that use layered elastic theory or plate theory with infinite slab dimensions are not expected to give accurate results.…”

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confidence: 99%

Backcalculation Procedure for Bonded Concrete Overlays of Asphalt Pavement

King

Roesler

2014

Transportation Research Record

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Bonded concrete overlays of asphalt (BCOA), previously known as ultra-thin whitetopping, have become increasingly common in Illinois in the past 15 years. No methods exist for assessing in situ properties under loading for this type of overlay. A procedure to backcalculate layer properties from falling weight deflectometer tests does exist for concrete slabs on grade with infinite dimensions, but this method is not applicable to finite-sized BCOA slabs with multiple layers and interfaces. Based on two-dimensional finite element modeling of BCOA pavements, a backcalculation procedure was derived for a range of expected slab sizes, effective concrete pavement thicknesses, joint load transfer efficiencies, and foundation layer stiffnesses. The backcalculated effective concrete thickness quantifies the load-carrying capacity of the BCOA pavement, variation of the structural capacity as a function of distance along the roadway, and potentially the condition of the concrete–asphalt bond interface and the underlying asphalt concrete layer. Application of the BCOA backcalculation procedure to falling weight deflectometer data collected from several projects in Illinois confirmed the reasonableness of the procedure through observed performance and estimated layer thicknesses from construction.

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Evaluation of Performance and Design of Ultra-Thin Whitetopping (Bonded Concrete Resurfacing) Using Large-Scale Accelerated Pavement Testing

Cited by 7 publications

References 5 publications

Removing Obstacles for Pavement Cost Reduction by Examining Early Age Opening Requirements: Material Properties

Removing Obstacles for Pavement Cost Reduction by Examining Early Age Opening Requirements: Material Properties

Evaluation of Bonded Concrete Overlay of Asphalt under Accelerated Loading

Backcalculation Procedure for Bonded Concrete Overlays of Asphalt Pavement

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