Damage Identification, Progression, and Condition Rating of Bridge Decks Using Multi-modal Non-destructive Testing - 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 Damage Identification, Progression, and Condition Rating of Bridge Decks Using Multi-modal Non-destructive Testing write by Brian M. Pailes. This book was released on 2014. Damage Identification, Progression, and Condition Rating of Bridge Decks Using Multi-modal Non-destructive Testing available in PDF, EPUB and Kindle.
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.
Development of a Condition Assessment Method of Deteriorated Bridge Decks Based on GPR Data and Structural Response
Development of a Condition Assessment Method of Deteriorated Bridge Decks Based on GPR Data and Structural Response - 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 Development of a Condition Assessment Method of Deteriorated Bridge Decks Based on GPR Data and Structural Response write by Dipesh Donda. This book was released on 2021. Development of a Condition Assessment Method of Deteriorated Bridge Decks Based on GPR Data and Structural Response available in PDF, EPUB and Kindle. Bridges are at the heart of transportation systems connecting the roads to and between the mainlands. Thus, bridges are an integral part of the economic growth of any country. They are subjected to dynamic loads of the vehicles and the environmental effects. These loads cause stress and strain cycles causing its deterioration by initiating microcracking. The deterioration is then accelerated due to the chloride attack which causes the corrosion of the steel reinforcement resulting in cracking and delamination of concrete and ultimately leads to failure. It is essential to analyze the bridge with its actual condition which is difficult with a visual inspection. This analysis can help in determining the degree of repairs needed and an approximate idea about its service life. The development of the Non-Destructive Test (NDT) methods helps assess the condition of the bridge without any kind of damage to the original structure. In the past few decades, the Non-Destructive Evaluation (NDE) with the help of Ground Penetration Radar (GPR) has gained popularity due to its ease in the evaluation of the larger areas such as bridge deck and parking lot in a shorter amount of time with sufficient training. The NDE using GPR for Structural Health Monitoring (SHM) has been still evolving with new improvements in its technology as well as the development of new methods for the analysis of its data. A positive step towards detecting the subsurface materials present in the cracks has been undertaken in this study. A methodology to detect the subsurface cracks/gaps in concrete using GPR has been developed here by preparing three concrete samples of dimensions 50 x 25 x 5 cm3, 50 x 25 x 10 cm3, and 50 x 25 x 20 cm3 in the laboratory. The detection of reinforcement of 6 mm, 10 mm, 18 mm, 20 mm diameter, as well as a 21.8 mm Fiber Reinforcement Polymer (FRP) bar, are studied along with the detection of the air gap, water gap, and gap with the salt solutions of thickness 3 mm, 4 mm, 4.8 mm, 5.8 mm and 8.8 mm under the depth of 5 cm, 10 cm, and 15 cm. The amplitude values of these parameters are studied, and a comparison is made to check the ability of GPR to detect this material in cracks and/or delamination with changes in depths. This will be helpful in analyzing the GPR data with more reliability. Along with this, a non-linear finite element model (FEM) of a bridge superstructure using a fiber element is developed. The FE model of the bridge deck is updated and analyzed using a GPR defect map. This procedure of model updating is less tedious than the previous method available in the literature and proves to be time-saving. This model updating procedure will prove to be helpful in estimating the capacity of the bridge and make a prediction for future deterioration with the help of NDE methods (here GPR).
Condition Analysis of Concrete Bridge Decks in Utah
Condition Analysis of Concrete Bridge Decks in Utah - 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 Condition Analysis of Concrete Bridge Decks in Utah write by Robert S. Tuttle. This book was released on 2005. Condition Analysis of Concrete Bridge Decks in Utah available in PDF, EPUB and Kindle. Several evaluation techniques were employed to assess concrete bridge deck condition, including visual inspection, hammer sounding and chaining, dielectric measurements, ground-penetrating radar imaging, resistivity testing, half-cell potential testing, and chloride concentration testing. The condition assessment testing confirmed that chloride-induced corrosion of reinforcing steel is the primary mechanism of deck deterioration and that inadequate cover over the upper steel mat facilitated accelerated corrosion damage in many instances. The bridge deck condition analyses produced from the results of non-destructive testing were compared to the visual inspection ratings assigned to each deck by UDOT.
The Economic Impact of Implementing Nondestructive Testing of Reinforced Concrete Bridge Decks in Indiana
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.
