Evaluation of Automated Pavement Thickness Using Radar PDF Download

Author: W. M. Kim Roddis
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 60

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Author: W. M. Kim Roddis
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 46

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Book Description

Author: W. M. Kim Roddis
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Author: Lev Khazanovich
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 81

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Book Description
The objective of this research was to develop a procedure for nondestructive assessment of pavement thickness using 3D ground penetrating radar (3D GPR). The software developed in this study can analyze the data sets collected with either 27- or 121- transmitting and receiving pair configurations. It uses two approaches to determine asphalt thickness: analysis of individual pairs of antennas time histories along with the user-provided dielectric constant for the asphalt layer; and analysis of groups of signals from transmitting and receiving antennas with various spacing but with a common mid-point using the Modified Extended Common Mid-Point (MXCMP) method. The MXCMP method is a generalization of the Extended Common Mid-Point (MXCMP) method for analysis of more than two antenna pair signals with the same mid-point.

Author: E. Fernando
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 18

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Pavement layer thickness data required for network and project level pavement management is often not available due to the cost, time, and traffic disruption involved in taking cores. A non-destructive, non-contact method for thickness measurement is available and can be implemented from a survey vehicle moving at highway speed. The technology incorporates horn antenna radar equipment coupled with customized processing software. The reported work represents evaluations of the method on 46 different pavement sections located in 12 different states. The processed radar data has been correlated with results from over 300 cores, showing an expected accuracy of +/-7.5% (typically +/- 0.5 inches or 12.7 mm) for asphalt thickness. Results from borings and test pits show an expected accuracy of +/- 12% (+/- 1 inch or 25.4 mm) for base thickness. The radar data has also been successfully utilized to identify changes in pavement section.

Author: Frazier Parker
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 132

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Author: Kenneth R. Maser
Publisher:
ISBN:
Category :
Languages : en
Pages : 13

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Author: David Allen Willett
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 58

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Author: Kenneth Maser
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 68

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Author: ASTM Committee D-18 on Soil and Rock. Subcommittee D-4 on Road and Paving Materials
Publisher: ASTM International
ISBN: 0803118651
Category : Fatigue
Languages : en
Pages : 528

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Book Description
The proceedings of June 1993 international symposium held in Atlanta, Georgia, called specifically to develop and standardized evaluation procedures for non-destructive methods of testing pavements. The 29 papers discuss analytical models and techniques, measurement and calculation techniques in the field and laboratory, problems and errors associated with backcalculation methods and design parameters, and testing for other pavement uses. Also includes a history of the quest for a standard and the status of that effort. Reproduced from typescripts. Annotation copyright by Book News, Inc., Portland, OR