Development of a smartphone app and device to reduce tack coat tracking

Covey, David; Coleri, Erdem; Mahmoud, Aiman; Анисимова, Н. Ю.

doi:10.1080/14680629.2018.1438916

Cited by 4 publications

(6 citation statements)

References 7 publications

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“…The FPO software incorporates various MEMs and algorithms to simulate the behavior of flexible pavements under different loading and environmental conditions. It considers factors such as material properties, traffic characteristics, climate data, and pavement structure to estimate performance indicators including distresses, rutting, fatigue life, and roughness [76].…”

Section: Flexible Pavements Of Ohio (Fpo) Softwarementioning

confidence: 99%

An Appraisal of Mechanistic-Empirical Models (MEMs) in Pavement Deterioration

Tiza

2023

JANSET

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This research paper presents an appraisal of Mechanistic-Empirical Models (MEMs) in pavement deterioration assessment. The study examines various MEMs used in the analysis of flexible pavements, including Westergaard's Equation, Boussinesq's Equation, NCHRP 1-37A, AASHTO MEPDG, EICM, and FPO Software. The equations, parameters, limitations, and advantages of each model are thoroughly evaluated. The significance of MEMs in pavement deterioration assessment is highlighted, emphasizing their ability to provide a mechanistic understanding of pavement behavior and enable accurate predictions of performance. The paper offers recommendations for practitioners and researchers, including the adoption and implementation of MEMs, collaboration and data sharing, enhanced model inputs, standardized calibration protocols, continuous model improvement, and training and education. The conclusion emphasizes the value of MEMs in pavement engineering while acknowledging the need for further improvement and research. The findings of this study contribute to advancing the appraisal and utilization of MEMs in pavement deterioration assessment, ultimately leading to improved pavement designs, optimized maintenance strategies, and informed decision-making in the field of pavement engineering.

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Section: Flexible Pavements Of Ohio (Fpo) Softwarementioning

confidence: 99%

An Appraisal of Mechanistic-Empirical Models (MEMs) in Pavement Deterioration

Tiza

2023

JANSET

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“…Although sweeping/air blasting is done after milling, 100% cleanliness cannot be achieved during pavement construction projects ( 1 , 4 ). Tack coats applied to a dusty surface establish bond with the dust contaminants instead of the underlying layer, which affects the bonding between the new and existing pavement layers and the overall integrity and long-term performance of the pavement structure ( 1 , 5 , 6 ).…”

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confidence: 99%

Investigation of Tack Coat Bond Damage Mechanism in Asphalt Surfaced Pavements under Dynamic Truck Loads

Estaji

Coleri

Wruck

2020

Transportation Research Record

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Bonding created by the tack coat allows the pavement system to carry heavy truck loads as a monolithic structure and improves the structural integrity. In Oregon and throughout the U.S.A., CSS-1H is the most commonly used tack coat type. However, field observations have revealed that new engineered tack coats, although more expensive, outperform the conventional types in relation to shear resistance. In this study, the impact of these new engineered emulsions on in-situ bond performance was quantified by laboratory testing and numerical modeling. Bonding damage performance of all tack coats was experimentally determined by using direct shear tests. Full-scale moving truck load models were developed and calibrated using the load-displacement parameters obtained from the laboratory shear tests. The impact of adverse construction conditions, such as dust, rain, and tack coat coverage, on tack coat bond damage under heavy truck loads was determined. It was concluded that the presence of dust had relatively the lowest contribution to shear damage. Rain during construction had the highest impact on the damage behavior and tack coat application on a wet surface increases the potential for damage by 20.1%. A 50% coverage of tack coat during construction resulted in 12.8% higher damage levels compared with 100% tack coat coverage of the surface area. Moving load models for heavy trucks caused 2.44 times more bonding damage at the bonded interface compared with the damage created by smaller trucks (F450).

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“…Tack coat application rates should be varied according to site conditions such that an optimum amount of residual asphalt is obtained which will help avoid interlayer bond-related pavement failures ( 5 , 6 ). Slippage problems arise when an excessive amount of tack coat material is sprayed during construction, particularly with slow-setting emulsions ( 7 ). On the other hand, an inadequate amount of tack coat can result in debonding problems (especially in the wheel paths) over the design life of the pavement structure ( 8 ).…”

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confidence: 99%

“…This occurs mostly in the wheelpaths where interlayer bonding is most critical. The severity of tracking is determined mostly by the emulsion properties and the curing time allotted before construction ( 7 ). By avoiding construction vehicle traffic before the calculated curing time, tracking can be minimized.…”

mentioning

confidence: 99%

Developing Technologies and Procedures to Reduce Tracking and Achieve Uniform and Accurate Tack Coat Application

Coleri

Villarreal

Wruck

2020

Transportation Research Record

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The tack coat bond is known to affect the longevity of asphalt pavements. Proper interlayer bonding prevents successive pavement layers from acting independently of one another and creating non-uniform stress and strain profiles in the pavement structure. Poor bonding between pavement layers can result in various pavement failures such as slippage cracking, debonding, and early fatigue cracking, all of which contribute to a reduced pavement fatigue life. Tack coat application rate and uniformity (that can be achieved by uniform tack coat application and by avoiding/minimizing tracking) are two major factors that control the performance of the tack coat bonding and longevity of the pavement structure. In this study, a wireless scale system (OreTackRate) that can be controlled from a tablet computer was developed to measure tack coat application rate accuracy and uniformity. The developed wireless scale system was recommended to be implemented during construction to validate application rate accuracy and uniformity. In addition, a distributor truck certification process was developed and presented in this study. The developed scale system can also be used to determine whether the applied tack coat is cured at any time point during construction. Residual tack coat application rate can also be measured using OreTackRate during construction. Implementation of all these tests, procedures, and technologies is expected to improve the tack coat uniformity during construction and improve the overall longevity of the pavement structure.

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Development of a smartphone app and device to reduce tack coat tracking

Cited by 4 publications

References 7 publications

An Appraisal of Mechanistic-Empirical Models (MEMs) in Pavement Deterioration

An Appraisal of Mechanistic-Empirical Models (MEMs) in Pavement Deterioration

Investigation of Tack Coat Bond Damage Mechanism in Asphalt Surfaced Pavements under Dynamic Truck Loads

Developing Technologies and Procedures to Reduce Tracking and Achieve Uniform and Accurate Tack Coat Application

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