Moving Pavement Deflection Testing Devices: State-of-the-Technology and Best Uses
Pavement management systems (PMS) have historically relied on distress (e.g., cracking, and rutting) and roughness (e.g., International Roughness Index or IRI) as key pavement performance indicators in the decisions-making process. Both are important indicators that merit emphasis within the PMS process, but they are not the only ones. Structural adequacy, for example, is another important pavement performance indicator that is critical to making rational pavement rehabilitation decisions. And indeed, more and more highway agencies in the USA are incorporating deflection testing as part of their routine PMS activities. Deflection testing for the structural evaluation of pavements has been around for decades. Falling Weight Deflectometers (FWDs) represent the state-of-the-practice in pavement deflection testing; however, FWD testing is a stop-and-go operation that requires lane closures (hence can cause traffic disruptions and create a safety hazard) and that has limited production rates. To overcome these shortcomings, a number of organizations have developed moving pavement deflection testing devices. Recognizing the potential benefits of these devices, the Federal Highway Administration commissioned Fugro Consultants, Inc., to undertake a study to determine whether the current devices can be put to good practical use and, if so, how best to utilize the devices. This paper presents the results of the study. Highlights from a state-of-the-technology review into moving pavement deflection measurements are presented; three devices were identified as viable. Findings and conclusions from a technology assessment of the three viable devices are also presented, including the best uses for these devices.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9789561412309
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Supplemental Notes:
- The local host for the conference is Pontificia Universidad Catolica de Chile; the international host is the Transportation Research Board of the National Research Council, USA.
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Corporate Authors:
Pontificia Universidad Catolica de Chile
College of Engineering
Avenida Vicuna Mackenna 4860, Macul
Santiago, Chile -
Authors:
- Rada, Gonzalo
- Nazarian, Soheil
- Daleiden, Jerry
- Yu, Tom
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Conference:
- Eighth International Conference on Managing Pavement Assets
- Location: Santiago , Chile
- Date: 2011-11-15 to 2011-11-19
- Publication Date: 2011
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; Photos; References; Tables;
- Pagination: 14p
- Monograph Title: 8th International Conference on Managing Pavement Assets, November 15-19, 2011, Santiago, Chile: "Fulfilling the Social, Economic and Environmental Responsibility for Sustainable, Well Managed, Better Roads"
Subject/Index Terms
- TRT Terms: Decision making; Deflection tests; Deflectometers; Pavement management systems; Rehabilitation; Structural analysis; Technology assessment
- Uncontrolled Terms: Rolling dynamic deflectometers; Rolling wheel deflectometers
- Subject Areas: Highways; Maintenance and Preservation; Pavements; I60: Maintenance;
Filing Info
- Accession Number: 01367431
- Record Type: Publication
- ISBN: 9789561412309
- Report/Paper Numbers: ICMPA082
- Files: TRIS
- Created Date: Apr 9 2012 4:45PM