Pavement Characterization Using Ground Penetrating Radar PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Pavement Characterization Using Ground Penetrating Radar PDF full book. Access full book title Pavement Characterization Using Ground Penetrating Radar by KR. Maser. Download full books in PDF and EPUB format.
Author: KR. Maser
Publisher:
ISBN:
Category : Delamination
Languages : en
Pages : 14
Get Book Here
Book Description
Over the past 10 years the application of Ground Penetrating Radar (GPR) to pavement layer characterization has undergone significant developments. Current GPR technology is applied using non-contact equipment operating at normal driving speeds for data collection, and automated data processing software. Applications include determination of pavement layer thickness, identifying changes in pavement structure, and detection of pavement deterioration. The paper provides an overview of these applications, including: a synopsis of related research studies and results, expected levels of accuracy, requirements for ground truth, and availability of equipment and software. The paper also presents project case studies illustrating the key features of each current GPR application. Finally, the paper provides an update on current and in-progress specifications and standards for the application of GPR to pavement characterization.
Author: KR. Maser
Publisher:
ISBN:
Category : Delamination
Languages : en
Pages : 14
Get Book Here
Book Description
Over the past 10 years the application of Ground Penetrating Radar (GPR) to pavement layer characterization has undergone significant developments. Current GPR technology is applied using non-contact equipment operating at normal driving speeds for data collection, and automated data processing software. Applications include determination of pavement layer thickness, identifying changes in pavement structure, and detection of pavement deterioration. The paper provides an overview of these applications, including: a synopsis of related research studies and results, expected levels of accuracy, requirements for ground truth, and availability of equipment and software. The paper also presents project case studies illustrating the key features of each current GPR application. Finally, the paper provides an update on current and in-progress specifications and standards for the application of GPR to pavement characterization.
Author:
Publisher:
ISBN: 9781895102574
Category :
Languages : en
Pages : 18
Get Book Here
Book Description
A new ground penetrating radar (GPR) technology called Road Radar determines both the signal travel time and the velocity in the pavement layers at every measurement point thus making it self-calibrating by accounting for varying material properties. The system uses multiple antennas that permit layer thickness measurements from 50 mm to greater than two metres with accuracies of five percent. The system uses proprietary software to process and interpret the data. The first part of this paper is devoted to describing some of the innovations which have been incorporated into the Road Radar. the second part of this paper is for the purpose of describing field testing of the new technology. A significant period in 1993 was devoted to performing site demonstrations of the technology, and of performing data collection operations at a substantial number of locations in North America and Europe. A number of specific projects, involving pavement structures in Canada, United States and Finland, have been selected for inclusion in this paper, and are described hearafter. For the covering abstract of this conference, see IRRD number 863140.
Author: Rexford M. Morey
Publisher: Transportation Research Board
ISBN: 9780309061100
Category : Technology & Engineering
Languages : en
Pages : 48
Get Book Here
Book Description
This synthesis will be of interest to state Department of Transportation (DOT) geotechnical, bridge, and pavement engineers, engineering geologists, consultants involved with ground penetrating radar (GPR) investigations for state DOTs, and researchers. It describes the current state of the practice of using GPR for evaluating subsurface conditions for transportation facilities. This was accomplished by conducting a literature search and review and an extensive survey of U.S. and Canadian transportation agencies and practitioners, as well as limited international information collection. GPR is a noninvasive nondestructive tool used in transportation applications such as evaluation and characterization of pavement systems, soils, and environmental problems. This report of the Transportation Research Board presents information on the principles, equipment, logistics, applications, and limitations of GPR pertaining to transportation applications. Selected case studies for which ground truth information is available are presented. In addition, an extensive bibliography and glossary are provided as well as appending information about GPR manufacturers from their literature.
Author: Yuejian Cao
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 102
Get Book Here
Book Description
The objective of this project was to develop an efficient and accurate algorithm for the back analysis of pavement conditions measured by ground penetrating radar (GPR). In particular, more reliable information about the thickness of the asphalt concrete (AC) layer and the dielectric constants of the AC and base layers were obtained from the electromagnetic field measurements performed on roads using GPR. A brief introduction to the existing methodology for interpreting GPR images is reviewed, and the theory associated with electromagnetic wave propagation in layered structures is described. Utilizing the full waveform solution, algorithms for back analysis of pavement conditions were developed based on the artificial neural network approach and the frequency response function concept. Software called ''GopherGPR'' uses the GPR signal from one antenna to interpret the characteristics of the AC layer with no assumptions on material properties. Thus, the new technique has the capability of providing information not previously available.
Author: Shiraz D. Tayabji
Publisher: ASTM International
ISBN: 0803128584
Category : Materials
Languages : en
Pages : 534
Get Book Here
Book Description
As with the previous two symposia, the 32 papers from the June/July, 1999, Seattle symposium present advances in the nondestructive testing of pavements using conventional falling weight deflectometer techniques and other promising techniques such as ground penetrating radar, rolling weight deflecto
Author:
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages :
Get Book Here
Book Description
Author: Lev Khazanovich
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 81
Get Book Here
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: Imad L. Al-Qadi
Publisher:
ISBN:
Category : Ground penetrating radar
Languages : en
Pages : 72
Get Book Here
Book Description
A ground-penetrating radar (GPR) system was used to collect data over the different pavement sections of the Virginia Smart Road from June 1999 until December 2002. Three antennae at different frequencies were used for this research. The collected data were successfully used to evaluate the physical GPR detection limitations, to evaluate the GPR accuracy for pavement layer thickness determination, to control the installation of three different types of reinforcing meshes installed within the pavement, and to estimate the in-situ complex dielectric constant of several types of hot-mix asphalt (HMA). The data analysis results were verified by the well-documented structure and composition of each section of the road, in addition to the embedment of 35 copper plates (perfect electromagnetic reflectors) at the different layer interfaces during construction of the pavement. It was found that GPR is a feasible nondestructive tool to estimate the layer thicknesses of bound and unbound aggregate layers, HMA layers, and concrete slabs. However, interface detection can be altered if the layers have comparable dielectric constants. A technique was developed to estimate the frequency-dependent in-situ complex dielectric constant of HMA materials. Results have shown that the effect of the variations of the dielectric properties within the GPR bandwidth is insignificant vis-à-vis the accuracy of thickness estimation. The use of GPR as a quality control tool to verify the success of steel reinforcing mesh installation was also found to be feasible. Given the success of using GPR for the aforementioned applications in the Virginia Smart Road, it is recommended that the Virginia Department of Transportation use GPR more frequently as a quality control tool during new pavement construction projects and as an assessment tool prior to project rehabilitation and as part of Virginia's pavement management system.
Author: Andrea Benedetto
Publisher: Springer
ISBN: 3319048139
Category : Science
Languages : en
Pages : 373
Get Book Here
Book Description
This book, based on Transport and Urban Development COST Action TU1208, presents the most advanced applications of ground penetrating radar (GPR) in a civil engineering context, with documentation of instrumentation, methods and results. It explains clearly how GPR can be employed for the surveying of critical transport infrastructure, such as roads, pavements, bridges and tunnels and for the sensing and mapping of underground utilities and voids. Detailed attention is also devoted to use of GPR in the inspection of geological structures and of construction materials and structures, including reinforced concrete, steel reinforcing bars and pre/post-tensioned stressing ducts. Advanced methods for solution of electromagnetic scattering problems and new data processing techniques are also presented. Readers will come to appreciate that GPR is a safe, advanced, non destructive and noninvasive imaging technique that can be effectively used for the inspection of composite structures and the performance of diagnostics relevant to the entire life cycle of civil engineering works.
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: Transportation Research Board
ISBN: 0309273404
Category : Social Science
Languages : en
Pages : 774
Get Book Here
Book Description
This report from the second Strategic Highway Research Program (SHRP 2), which is administered by the Transportation Research Board of the National Academies, describes development of nondestructive testing techniques that are capable of detecting and quantifying delaminations in HMA pavements. This NDT technique is applicable to construction, project design, and network-level assessments. This e-book contains 5 different volumes, the last 4 involving more technical descriptions of the project.
