Download or read book Nondestructive Testing to Identify Concrete Bridge Deck Deterioration written by and published by Transportation Research Board. This book was released on 2013 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: " TRB's second Strategic Highway Research Program (SHRP 2) Report S2-R06A-RR-1: Nondestructive Testing to Identify Concrete Bridge Deck Deterioration identifies nondestructive testing technologies for detecting and characterizing common forms of deterioration in concrete bridge decks.The report also documents the validation of promising technologies, and grades and ranks the technologies based on results of the validations.The main product of this project will be an electronic repository for practitioners, known as the NDToolbox, which will provide information regarding recommended technologies for the detection of a particular deterioration. " -- publisher's description.
Download or read book Nondestructive Evaluation of Bridge Decks written by Bernard H. Hertlein and published by CRC Press. This book was released on 2016-07-01 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference details the core test methods for the nondestructive evaluation of bridge decks and overlays, and gives a balanced comment on their strengths and limitations. It covers visual, acoustic, low strain, electro-chemical, and invasive methods, and also looks at novel and emerging methods as wll as the general question of quality control. It also gives guidance on which test methods to specify for various site conditions or needs and on adherence to internationally recognized norms or standards where these exist.
Download or read book Nondestructive Evaluation of MoDOT Bridge Decks N Phase 2 written by Lesley Sneed and published by . This book was released on 2014 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research has examined the use of nondestructive techniques for concrete bridge deck condition assessments. The primary nondestructive testing/evaluation (NDT/NDE) technique utilized in this research was ground-coupled ground penetrating radar (GPR). The objectives of this research were to examine the utility of the nondestructive techniques in evaluating the condition of MoDOT bridge decks to enable faster, better, and more cost-effective bridge deck assessments, and to determine the accuracy of the information provided.
Download or read book Evaluation of Bridge Decks Using Non destructive Evaluation NDE at Near Highway Speeds for Effective Asset Management written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Remote sensing technologies allow for the condition evaluation of bridge decks at near highway speed. Data collection at near highway speed for assessment of the top of the concrete deck and proof of concept testing for the underside of the deck was conducted for surface and subsurface evaluation. 3-D photogrammetry was combined with passive thermography to detect spalls, cracks and delaminations for the top of the concrete bridge deck, while active thermography was investigated for bottom deck surface condition assessment. Successful field demonstrations validated results comparable to MDOT inspections. Recommendations for immediate implementation for condition assessment of the top of a concrete deck are included for introducing the BridgeViewer Remote Camera System into current bridge inspections to provide a photo inventory of the bridge deck captured at 45mph and above using GoPro cameras. The combined optical photogrammetry (3DOBS) and passive thermography technologies provide an objective analysis of spalls, cracks and suspected delaminations while traveling at near highways speed. Using the same 3DOBS technology with higher resolution cameras and slower speeds, cracks can be detected as small as 1/32 in. Laboratory and field demonstrations show active thermography would benefit from further development as a remote sensing technology for condition assessment on the underside of the bridge deck.
Download or read book The Economic Impact of Implementing Nondestructive Testing of Reinforced Concrete Bridge Decks in Indiana written by Benjamin Taylor and published by . This book was released on 2016-12-31 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The deck is among the most expensive components of a bridge over its lifetime because of the frequent and costly maintenance and rehabilitation required. Currently, the Indiana Department of Transportation (INDOT) performs visual inspections of a bridge deck as the principal means of determining its condition, which enables the inspector to definitively document the surface condition while the unseen condition below the deck surface is left to the inspector's expert judgement. To compensate for this lack of data, INDOT supplements visual inspections with programmatic scheduling for major work actions, which is very effective for INDOT but costly. In this continuing era of funding shortfalls, INDOT commissioned this study to investigate nondestructive testing (NDT) methods to fill their data gap to inform its work action decision. The NDT methods have been shown to accurately locate corrosion and delamination and are a cost-effective alternative. A project level comparison between the NDT methods was performed to show which method, as well as which combination of methods, were the best choices from a cost perspective. A project level analysis of 30 bridge decks was performed, and those costs were compared to the costs of the current INDOT programmatic schedules. Finally, the analysis was expanded to the network level, which included the entire bridge inventory in Indiana. The results of this study indicate that implementing the NDT methods is cost-effective for INDOT at both the project and network levels.
Download or read book Use of Vertical Electrical Impedance for Nondestructive Evaluation of Concrete Bridge Decks written by Enoch Thomas Boekweg and published by . This book was released on 2021 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: An additional study was performed on a newly constructed bridge deck in Midvale, Utah, that was subject to an unexpected rainstorm during construction. Several forms of nondestructive testing, including VEI testing, were performed on the deck. Statistical analysis of the tests permitted assessment of the bridge deck. Comparing VEI testing with these other NDT methods has not been done before, and the results of this work will assist those who are unfamiliar with VEI with interpretation of VEI data in the context of other, more typical NDT techniques.
Download or read book Nondestructive Evaluation of Concrete Bridge Decks with Overlays written by Shibin Lin and published by . This book was released on 2021 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete bridge deck overlays have been used in the United States since 1960 to extend the service life of deteriorated concrete bridge decks and improve reliability. Concrete bridge decks with overlays suffer various types of deterioration, so it is necessary to identify and assess the effectiveness of different nondestructive evaluation (NDE) technologies in the laboratory under controlled conditions and in the field under actual conditions. This report provides an overview of seven types of widely used overlays: asphalt with a liquid membrane, asphalt with a fabric membrane, asphalt without a membrane, silica fume-modified concrete, latex-modified concrete (LMC), epoxy polymer concrete, and polyester polymer concrete. This report identifies and ranks available and promising NDE technologies to assess the performance of different types of overlays and concrete bridge decks. This report describes laboratory validation on overlays for nine commonly used NDE technologies. The nine NDE technologies are: sounding, ultrasonic surface waves (USW), impact echo (IE), ultrasonic tomography (UT), impulse response (IR), ground-penetrating radar (GPR), electrical resistivity (ER), half-cell potential (HCP), and infrared thermography (IRT). This report details the results of laboratory tests validating the NDE technologies for the seven different types of overlays. Field validation using the RABITTM bridge deck assessment tool and manual testing equipment was also performed. Results from the study on which this report is based indicated that GPR was the most effective method for detecting defects in underlying concrete specimens through both bonded and debonded overlays; however, GPR could not detect overlay debonding. Results also showed that USW, IE, and UT were effective stress-wave-based methods for detecting defects under bonded overlays but not asphalt overlays. Researchers found that asphalt overlays at low temperatures (i.e., 32°F or below) improved the applicability of
Download or read book Evaluation of Bridge Decks Using Non destructive Evaluation NDE at Near Highway Speeds for Effective Asset Management Pilot Project written by Theresa M. Ahlborn and published by . This book was released on 2016 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project piloted the findings from an initial research and development project pertaining to the detection, quantification, and visualization of bridge deck distresses through the use of remote sensing techniques, specifically combining optical and thermal imagery, and expanded by increasing the rate of data collection to near-highway speed (speeds of at least 45 mph). Specifically, six large deck bridges (>90,000 sf) were assessed, without closing lanes to traffic, and are presented. Top deck concrete surfaces were evaluated for spalls and delaminations, and were recapped in map-based and table-based element level summaries with percentage and area by condition state and by span. Personnel and computing times were documented, and costs were estimated for a similar future bridge deck condition assessment for a large deck bridge. Additionally, this pilot project conducted a 3-D Optical Bridge-evaluation System (3DOBS) accuracy assessment, and provided training and demonstration sessions to help MDOT personnel understand and implement these technologies. By identifying element level condition states of concrete decks through innovative methods of data collection and advanced data processing, implementation of these combined remote sensing technologies has the potential to become a standard MDOT business practice.
Download or read book Non destructive Evaluation of Bridge Decks written by David Fernando Peralta and published by . This book was released on 1997 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nondestructive Evaluation of Bridges and Highways written by and published by . This book was released on 1996 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Bridge Inspection and Non destructive Evaluation of Concrete Bridge Decks written by Philip L. Westover and published by . This book was released on 1984 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluating Concrete Damage in Bridge Decks with and Without Overlays Using Nondestructive Testing Procedures written by Tyler W. Robison and published by . This book was released on 2020 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The state of Wyoming alone has 13.1 million square feet of bridge deck, and evaluation of those decks has become an important part of the Wyoming Department of Transportation's (WYDOT) management of bridge repairs. The authors believe that development and advancement of nondestructive evaluation methods over the past 25 years may provide a more efficient, standardized, and accurate method for evaluating bridge deck conditions compared with current practices. A study was performed on three bridge decks in Wyoming: the First Street Bridge in Casper, the Douglas I-25 Bridge, and the Remount I-80 Bridge. For each bridge, an investigation was done using standard WYDOT practices for chain dragging. In addition, the bridges were evaluated using impact echo, thermal imaging, and ground-penetrating radar (GPR) techniques. All three methods considered were successful, and the damage locations between the impact echo, thermal imaging, and GPR generally correlated well. Based on this study, a complete bridge deck evaluation should combine impact echo with GPR testing to provide the most accurate predictions of delamination and debonding in support of optimal maintenance decisions.
Download or read book Assessment of Nondestructive Testing Methods for Bridge Deck Evaluations written by Tyler W. Robison and published by . This book was released on 2010 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: The state of Wyoming has 13.1 million sq. ft of road bridges (FHWA 2009), and evaluations have become an important part of the Wyoming Department of Transportation's (WYDOT) management of bridge repairs. Nondestructive testing (NDT) methods developed in the past 20 years may provide an efficient, standardized, and accurate method for evaluating bridge deck conditions. This thesis presents the results of an exploratory study performed on three bridge decks in Wyoming: the First Street Bridge in Casper, the Douglas I-25 Bridge, and the Remount Bridge on I-80. The goal is to develop a practical solution that WYDOT can implement. In particular, the solution should capitalize on safety, efficiency and accuracy. The author evaluated each bridge using standard WYDOT practices for chain dragging and half cell potentials, along with newer technologies of impact echo, thermal imaging, and ground penetrating radar (GPR), which provides a comprehensive assessment of the NDT evaluation techniques. Cores removed from the bridges were compared to the results from the evaluation methods. Damage locations between impact echo, thermal imaging, and GPR generally correlated well and factors are presented in this thesis. This research suggests that a combination of impact echo with GPR testing provides the most accurate predictions of delamination, debonding, and active corrosion on bridge decks.
Download or read book Ground Penetrating Radar for Non destructive Evaluation of Concrete Bridge Decks written by Christopher S. Adam and published by . This book was released on 1997 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nondestructive Evaluation of Fiber Reinforced Polymer Bridge Decks Using Ground Penetrating Radar and Infrared Thermography written by Cheng Lok Hing and published by . This book was released on 2006 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies have focused on the development of Fiber Reinforcement Polymer (FRP) as an alternative construction material for highway bridge decks.
Download or read book Evaluation of Bridge Deck Delamination Investigation Methods written by Henrique L. M. dos Reis and published by . This book was released on 1998 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: An objective view of the relative advantages and limitations of the nondestructive testing and evaluation methods that are currently used in the inspection of bridge decks is presented and discussed. The three main nondestructive testing technologies that were evaluated are impact-echo, ground penetrating radar, and infrared thermography. Nondestructive testing and evaluation procedures, including methodology and equipment to evaluate concrete bridge decks with asphalt overlays, are also presented and discussed. Current results indicate that a combination of ground penetrating radar and infrared thermography would provide the best methodology for evaluating the structural integrity, e.g., delaminations, of concrete bridge decks with overlays. Furthermore, current results also indicate that the impact-echo method shows promising future development towards the nondestructive evaluation of bridge superstructures.
Download or read book Nondestructive Evaluation of Bridges and Highways III written by Steve B. Chase and published by SPIE-International Society for Optical Engineering. This book was released on 1999 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
