Bonded concrete overlay of asphalt mechanical-empirical design procedure

Vandenbossche, Julie M.; Dufalla, Nicole; Li, Zichang

doi:10.1080/10298436.2016.1141410

Cited by 20 publications

(14 citation statements)

References 5 publications

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“…The parameters used for the validation sections can be seen in Table 2. The parameters for the MnROAD sections were obtained from construction reports and research summary publications ( 8,17–21 ). The asphalt stiffness at the time of the FWD testing was established using a mastercurve derived using laboratory data and temperatures measured from thermocouples embedded at mid-depth in the asphalt layer.…”

Section: Model Validationmentioning

confidence: 99%

“…Performing a computational analysis of all loading configurations and environmental conditions for all analysis periods for developing and utilizing a faulting prediction model is computationally prohibitive. Therefore, ANNs are used to produce responses rapidly, similar to the methodology employed in Pavement ME and linear regression stress prediction models in the BCOA-ME ( 6,8,9,22 ).…”

Section: Predictive Modelmentioning

confidence: 99%

“…The ANNs can very accurately reproduce the same deflections as the computational model, given a certain set of required inputs. These ANNs can then be used to develop predictive equations to rapidly estimate the response of the BCOA for use in a faulting model, similar to those within Pavement Mechanistic-Empirical (ME) for JPCP faulting and stress prediction in the BCOA-ME ( 6–9 ).…”

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confidence: 99%

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Development of Artificial Neural Networks for Predicting the Response of Bonded Concrete Overlays of Asphalt for Use in a Faulting Prediction Model

DeSantis

Vandenbossche

Alland

et al. 2018

Transportation Research Record: Journal of the Transportation R

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Transverse joint faulting is a common distress in bonded concrete overlays of asphalt pavements (BCOAs), also known as whitetopping. However, to date, there is no predictive faulting model available for these structures. To account for conditions unique to BCOA, a computational model was developed using a three-dimensional finite element program, ABAQUS, to predict the response of these structures. The model was validated with falling weight deflectometer (FWD) data from existing field sections at the Minnesota Road Research Facility (MnROAD) as well as at the University of California Pavement Research Center (UCPRC). A large database of analyses was then developed using a fractional factorial design. The database is used to develop predictive models, based on artificial neural networks (ANNs), to rapidly estimate the structural response at the joint in BCOA to environmental and traffic loads. The structural response will be related to damage using the differential energy concept. Future work includes the implementation of the developed ANNs in this study into a faulting prediction model for designing BCOA.

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Section: Model Validationmentioning

confidence: 99%

Section: Predictive Modelmentioning

confidence: 99%

mentioning

confidence: 99%

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Development of Artificial Neural Networks for Predicting the Response of Bonded Concrete Overlays of Asphalt for Use in a Faulting Prediction Model

DeSantis

Vandenbossche

Alland

et al. 2018

Transportation Research Record: Journal of the Transportation R

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“…Many methods for the BCOA design have also been proposed in recent decades ( 14 – 18 ). As pavement design has evolved from empirical design to mechanistic-empirical design in recent years, Vandenbossche et al ( 19 ) developed a mechanistic-empirical design procedure which has been recently implemented in the AASHTOWare Pavement ME software ( 4 ).…”

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confidence: 99%

Evaluation of Bonded Concrete Overlay of Asphalt under Accelerated Loading

Mahdi

Rupnow

2020

Transportation Research Record: Journal of the Transportation R

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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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“…As long-term performance data became available, the failure mechanisms for these structures were re-evaluated. The newly defined failure modes, along with the performance data available for calibration were used to develop a mechanistic-empirical (ME) design procedure, BCOA-ME, under the FWHA-sponsored Pooled Fund Study TPF-5-165 ( 6 ). Some of the failure modes within the BCOA-ME design procedure were then incorporated into the American Association of State Highway Transportation Officials (AASHTO) Pavement ME design procedure in the short jointed plain concrete pavement (SJPCP) module ( 7 ).…”

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confidence: 99%

Comparing the Bonded Concrete Overlays of Asphalt-Mechanistic Empirical Design Procedure and the Short Jointed Plain Concrete Pavement Module in the Pavement Mechanistic Empirical Design Procedure

Alland

Vandenbossche

DeSantis

et al. 2018

Transportation Research Record: Journal of the Transportation R

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Bonded concrete overlays of asphalt pavements (BCOA) consist of a concrete overlay placed on an existing asphalt or composite pavement. This technique is intended as a cost-effective rehabilitation solution for marginally distressed in-service asphalt or composite pavements. BCOA with panel sizes between 4.5 ft and 8.5 ft have become popular as they reduce curling stresses while keeping the longitudinal joints out of the wheelpath. The BCOA-ME (mechanistic empirical) design procedure and Pavement ME short jointed plain concrete pavement (SJPCP) module can both be used to design BCOA with mid-size panels. However, these design procedures differ in the assumptions used to develop the mechanistic computational model, fatigue models used to predict failure, treatment of environmental conditions, estimate of asphalt stiffness, consideration of structural fibers, the application of traffic loading, and the calibration process. This results in the procedures producing different overlay thicknesses and predicted distresses. The strengths and limitations of each procedure are evaluated and comparisons are made between the design thicknesses obtained from them.

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Bonded concrete overlay of asphalt mechanical-empirical design procedure

Cited by 20 publications

References 5 publications

Development of Artificial Neural Networks for Predicting the Response of Bonded Concrete Overlays of Asphalt for Use in a Faulting Prediction Model

Development of Artificial Neural Networks for Predicting the Response of Bonded Concrete Overlays of Asphalt for Use in a Faulting Prediction Model

Evaluation of Bonded Concrete Overlay of Asphalt under Accelerated Loading

Comparing the Bonded Concrete Overlays of Asphalt-Mechanistic Empirical Design Procedure and the Short Jointed Plain Concrete Pavement Module in the Pavement Mechanistic Empirical Design Procedure

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