Algorithm development for the application of ground-penetrating radar on asphalt pavement compaction monitoring

Shangguan, Pengcheng; Al-Qadi, Imad L.; Coenen, Aaron R.; Zhao, Shan

doi:10.1080/10298436.2014.973027

Cited by 57 publications

(24 citation statements)

References 23 publications

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“…Finite-difference time-domain (FDTD) method, a powerful tool for numerical modeling, is an appropriate tool for EM wave propagation simulation [ 9 ]. Although most of the research using the FDTD method has focused on the detection of underground objects, such as faults and caves, tunnel inspections, pipes, and landmines [ 10 , 11 , 12 , 13 ], this method has recently been applied to bridge assessment and inspection as well as pavement surface-moisture removal [ 14 , 15 , 16 ]. Microstructure and density of AC pavement research using the FDTD method, however, is still limited.…”

Section: Introductionmentioning

confidence: 99%

Development of a Numerical Model to Predict the Dielectric Properties of Heterogeneous Asphalt Concrete

Cao

Al-Qadi

2021

Sensors

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Ground-penetrating radar (GPR) has been used for asphalt concrete (AC) pavement density prediction for the past two decades. Recently, it has been considered as a method for pavement quality control and quality assurance. A numerical method to estimate asphalt pavement specific gravity from its dielectric properties was developed and validated. A three-phase numerical model considering aggregate, binder, and air void components was developed using an AC mixture generation algorithm. A take-and-add algorithm was used to generate the uneven air-void distribution in the three-phase model. The proposed three-phase model is capable of correlating pavement density and bulk and component dielectric properties. The model was validated using field data. Two methods were used to calculate the dielectric constant of the AC mixture, including reflection amplitude and two-way travel time methods. These were simulated and compared when vertical and longitudinal heterogeneity existed within the AC pavement layers. Results indicate that the reflection amplitude method is more sensitive to surface thin layers than the two-way travel time methods. Effect of air-void content, asphalt content, aggregate gradation, and aggregate dielectric constants on the GPR measurements were studied using the numerical model.

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Section: Introductionmentioning

confidence: 99%

Development of a Numerical Model to Predict the Dielectric Properties of Heterogeneous Asphalt Concrete

Cao

Al-Qadi

2021

Sensors

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“…This is typically referred to as 'thin layers problem'. The HMA layer thickness is a key parameter to consider in pavement design processes, and once the pavement is constructed, it covers a primary role in both quality control and quality assurance surveys, within the frame of effective road asset management plans [9,[36][37][38].…”

Section: Resolution Improvement Methodsmentioning

confidence: 99%

An overview of ground-penetrating radar signal processing techniques for road inspections

et al. 2017

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Ground-penetrating radar (GPR) was firstly used in traffic infrastructure surveys during the first half of the Seventies for testing in tunnel applications. From that time onwards, such non-destructive testing (NDT) technique has found exactly in the field of road engineering one of the application areas of major interest for its capability in performing accurate continuous profiles of pavement layers and detecting major causes of structural failure at traffic speed. This work provides an overview on the main signal processing techniques employed in road engineering, and theoretical insights and instructions on the proper use of the processing in relation to the quality of the data acquired and the purposes of the surveys

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“…But the ground penetrating radar can accurately test areas outside of the concrete base because of the concrete waterproof layer without reinforcing steel rebars. 46,47 The impactecho method, which is an effective nondestructive testing technique widely used for detecting certain defects inside concrete elements or structures based on the frequency spectrum analysis, 48,49 is introduced to detect the occurrence of mud pumping in the subgrade bed under the slab track structure, because there are different supporting conditions of the subgrade bed to the slab track structure under mud pumping occurring in the subgrade bed or not.…”

Section: Field Investigation On Mud Pumpingmentioning

confidence: 99%

Field investigation and full-scale model testing of mud pumping and its effect on the dynamic properties of the slab track–subgrade interface

Huang

Wang

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part F:

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Passenger comfort and safety are the most important aspects in the operation of high-speed railways. Mud pumping is a typical problem that occurs in the slab track and the subgrade interface, which influences passenger comfort and safety. In this paper, various field investigations and a full-scale model of the slab track and the subgrade are presented. The external and internal characteristics of mud pumping in the slab track–subgrade interface and the influence of mud pumping on the dynamic properties of the slab track–subgrade are analyzed. The results show that mud pumping only occurs at the expansion joints in the concrete base of the slab track structure. This happens due to the infiltration of rainwater into the subgrade bed through the cracks in the expansion joints. When the upper layer of the subgrade is kept saturated in the full-scale model, mud pumping is found to occur after 3.0 × 104 loading cycles. The vibration ratio of the subgrade surface to the concrete base gradually increases with continued cyclic loading. In addition, the cumulative settlement of the subgrade increased continuously. After 2.0 × 106 loading cycles, it was found that a large volume of slurry composed of water and fine particles was squeezed out of the subgrade bed, and mud pumping occurred on the surface of the subgrade bed leading to the formation of a mud layer between the concrete base and the subgrade bed, causing a loss of contact between the subgrade bed and the concrete base. This reduces the ability of the subgrade bed to support the slab track structure.

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Algorithm development for the application of ground-penetrating radar on asphalt pavement compaction monitoring

Cited by 57 publications

References 23 publications

Development of a Numerical Model to Predict the Dielectric Properties of Heterogeneous Asphalt Concrete

Development of a Numerical Model to Predict the Dielectric Properties of Heterogeneous Asphalt Concrete

An overview of ground-penetrating radar signal processing techniques for road inspections

Field investigation and full-scale model testing of mud pumping and its effect on the dynamic properties of the slab track–subgrade interface

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