01121590

Component

https://doi.org/10.3141/2087-08

http://scholar.google.com...tton&publication_year=2008

The ground-penetrating radar (GPR) technique has been successfully used to identify some subsurface problems on highway projects. However, the technique (especially techniques that use ground-coupled GPR systems) has not been fully developed or widely applied to concrete pavement rehabilitation work because of the data quality and data interpretation associated with the use of GPR systems for such work, which are only fair. Hence, a study was undertaken to explore the feasibility and potential of using the ground-coupled GPR technique for the detection of shallow delamination in continuously reinforced concrete (CRC) pavements. This paper proposes a three-step analysis protocol for the detection of field delamination with improved quality and improved accuracy of data interpretation on the basis of field-collected GPR data and graphic output. The three steps of this protocol include (a) a preliminary evaluation, (b) the development of a site-calibration algorithm based on the GPR return waveforms, and (c) the establishment of a threshold amplitude difference. This approach was preliminarily evaluated through further testing in the field, and it was identified as a potentially promising and useful tool for assessment of the delamination of CRC pavements.

01121592

English

pp 68-77

2008

Transportation Research Record: Journal of the Transportation Research Board

9780309126007

Print

Figures; Photos; References (44)

Accuracy; Algorithms; Computer graphics; Concrete pavements; Continuously reinforced concrete pavements; Data quality; Delamination; Field tests; Ground penetrating radar; Waveform analysis

Data interpretation

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

TRIS, TRB, ATRI

Feb 5 2009 9:14AM

• Accuracy of Current Complex Modulus Selection Procedure from Vehicular Load Pulse: NCHRP Project 1-37A Mechanistic–Empirical Pavement Design Guide
• Adaptation of Mechanistic–Empirical Pavement Design Guide for Design of Minnesota Low-Volume Portland Cement Concrete Pavements
• Benefits of the Minnesota Road Research Project
• Calibration of Mechanistic–Empirical Models for Flexible Pavements Using California Heavy Vehicle Simulators
• Coefficient of Thermal Expansion of Concrete Materials: Characterization to Support Implementation of the Mechanistic–Empirical Pavement Design Guide
• Conversion of Testing Frequency to Loading Time Applied to the Mechanistic–Empirical Pavement Design Guide
• Database Support for the New Mechanistic–Empirical Pavement Design Guide
• Dynamic Analysis and In-Situ Validation of Perpetual Pavement Response to Vehicular Loading
• Effect of Traffic Load Measurement Bias on Pavement Life Prediction: A Mechanistic-Empirical Perspective
• Local Calibration of Mechanistic–Empirical Pavement Design Guide for Flexible Pavement Design
• Pavement Rutting Performance Prediction by Integrated Weibull Approach
• Repeatability of Asphalt Strain Measurements Under Full-Scale Dynamic Loading
• Strain and Pulse Duration Considerations for Extended-Life Hot-Mix Asphalt Pavement Design