The Economic Impact of Implementing Nondestructive Testing of Reinforced Concrete Bridge Decks in Indiana - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Economic Impact of Implementing Nondestructive Testing of Reinforced Concrete Bridge Decks in Indiana write by Benjamin Taylor. This book was released on 2016-12-31. The Economic Impact of Implementing Nondestructive Testing of Reinforced Concrete Bridge Decks in Indiana available in PDF, EPUB and Kindle. 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.
Nondestructive Testing to Identify Concrete Bridge Deck Deterioration
Nondestructive Testing to Identify Concrete Bridge Deck Deterioration - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Nondestructive Testing to Identify Concrete Bridge Deck Deterioration write by . This book was released on 2013. Nondestructive Testing to Identify Concrete Bridge Deck Deterioration available in PDF, EPUB and Kindle. " 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.
Evaluating Concrete Damage in Bridge Decks with and Without Overlays Using Nondestructive Testing Procedures
Evaluating Concrete Damage in Bridge Decks with and Without Overlays Using Nondestructive Testing Procedures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Evaluating Concrete Damage in Bridge Decks with and Without Overlays Using Nondestructive Testing Procedures write by Tyler W. Robison. This book was released on 2020. Evaluating Concrete Damage in Bridge Decks with and Without Overlays Using Nondestructive Testing Procedures available in PDF, EPUB and Kindle. 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.
Nondestructive Testing of Concrete Bridge Decks Using Ground-penetrating Radar and the Chain Drag Method
Nondestructive Testing of Concrete Bridge Decks Using Ground-penetrating Radar and the Chain Drag Method - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Nondestructive Testing of Concrete Bridge Decks Using Ground-penetrating Radar and the Chain Drag Method write by Jerry J. Scheff. This book was released on 1998. Nondestructive Testing of Concrete Bridge Decks Using Ground-penetrating Radar and the Chain Drag Method available in PDF, EPUB and Kindle.
Nondestructive Corrosion Evaluation of Reinforced Concrete Bridge Decks with Overlays
Nondestructive Corrosion Evaluation of Reinforced Concrete Bridge Decks with Overlays - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Nondestructive Corrosion Evaluation of Reinforced Concrete Bridge Decks with Overlays write by Dewei Meng. This book was released on 2020. Nondestructive Corrosion Evaluation of Reinforced Concrete Bridge Decks with Overlays available in PDF, EPUB and Kindle. Concrete corrosion induced by deicing agents can decrease the durability of concrete bridge decks by causing cross-sectional loss of reinforcement, concrete delamination, and spalling owing to the expansion of corroded reinforcement. The installation of overlays can extend the service life of the deteriorated decks. However, overlays present challenges in the evaluation of the corrosion condition of the underlying decks. This laboratory study employed three nondestructive testing (NDT) methods to assess the effects of seven types of overlays on corrosion evaluation for concrete bridge decks. The NDT methods were electrical resistivity (ER), ground-penetrating radar (GPR), and half-cell potential (HCP). The ER method could not evaluate the corrosive environment in the concrete decks through the overlays. The GPR method could detect the corrosive environment through four of the seven overlays. The HCP method could detect the decrease of electrical potential over the actively corroded reinforcement for all seven specimens; however, only two of the seven specimens could be identified as having active corrosion per ASTM C876-15, Standard Test Method for Corrosion Potentials of Uncoated Reinforcing Steel in Concrete . Overlay debonding did not affect GPR and HCP testing results in this study.
