Download or read book Determination of Bridge Deck Subsurface Anomalies by Infrared Thermography and Ground Penetrating Radar written by David G. Alt and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to evaluate the use of infrared (IR) thermography and ground penetrating radar (GPR) to find subsurface anomalies, delaminations and de-bonding, on asphalt concrete overlaid concrete bridge decks. The traditional "chaining" method is a less effective option for finding subsurface defects after an overlay is in place. An IR thermographic and GPR (IR/GPR) evaluation was conducted on the I-70 Polk-Quincy viaduct in 1993. The results were compared to other studies conducted to check for subsurface anomalies.
Download or read book Determination of Bridge Deck Subsurface Anomalies by Infrared Thermography and Ground Penetrating Radar written by David G. Alt and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detection of Subsurface Anomalies in Composite Bridge Decks Using Infrared Thermography written by Hasan Alqennah and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Non Destructive Assessment of Concrete Structures Reliability and Limits of Single and Combined Techniques written by Denys Breysse and published by Springer Science & Business Media. This book was released on 2012-01-20 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives information on non destructive techniques for assessment of concrete structures. It synthesizes the best of international knowledge about what techniques can be used for assessing material properties (strength) and structural properties (geometry, defects...). It describes how the techniques can be used so as to answer a series of usual questions, highlighting their capabilities and limits, and providing advices for a better use of techniques. It also focuses on possible combinations of techniques so as to improve the assessment. It is based on many illustrative examples and give in each case references to standards and guidelines.
Download or read book Handbook on Nondestructive Testing of Concrete written by V. M. Malhotra and published by CRC Press. This book was released on 2004 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Civil engineers will value this resource that examines the tools and techniques used to estimate the in-place strength on concrete, permeation properties that relate to potential durability, and the methods used to assess the internal condition of concrete and the corrosion activity of steel reinforcement.
Download or read book Detection of Sub surface Anomalies in Concrete Bridge Decks Using Ground Penetrating Radar written by Vasudev A. Bhandarkar and published by . This book was released on 1993 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Procedure for the Detection of Subsurface Defects in Bridge Deck Joint Armor Using Ground Penetrating Radar and Seismic Properties Analysis written by Larry Lance Rickard and published by . This book was released on 2011 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seeks to extend the use of three non-destructive testing and evaluation (NDT/E) techniques, high-density surveying, ground penetrating radar, and seismic properties analysis, to the detection and quantification of subsurface defects and anomalies in and around bridge deck armor. Investigates and documents any challenges peculiar to these techniques with regard to armored deck joints, as well as their potential as alternatives or adjuncts to conventional NDT/E techniques.
Download or read book Ground Penetrating Radar Bridge Deck Investigations Using Computational Modeling written by and published by . This book was released on 2008 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrastructure in the United States is failing. According to a 2005 study by the American Society of Civil Engineers over a quarter of the bridges are structurally deficient or functionally obsolete. Condition assessment without the assistance of subsurface sensing techniques leads to poor detection and quantification of damage because much of the damage and precursors to damage is hidden beneath the surface. Ground Penetrating Radar (GPR) a popular choice for bridge deck assessment, depends on a subjective process, which is the trained eye of a technician. The ability to simulate a GPR investigation provides insight into the response from bridge deck elements, as well as the interaction among the elements and changes due to the presence of an anomaly and supports defect detection. A subsurface modeling tool is developed with physical modeling components available for general applications but extended to meet specific requirements for geometric modeling of civil infrastructure. The simulation component implements the 2-dimensional Finite Difference Time Domain (FDTD) method for electromagnetic modeling. Comparisons between 2D and 3D simulations show that, for bridge deck analysis, 2D modeling is adequate for condition assessment. A model-based assessment augments the conventional approach to analysis by using iterative computational models to reconstruct the bridge deck in a healthy condition. To identify areas of suspect condition, the response from the computed healthy deck can be compared to the response collected in the field. The effect of the presence of rebars on the scattering from an anomaly can be significant, and is not easily removed from GPR data. In the computational model, the strong scattering rebars are replaced with an excitation source that results in wave propagation equivalent to the scattering from the rebar. This technique makes the GPR bridge deck problem better suited to the traditional inversion algorithms that are often complicated by strong scatterers. Through experimentation, the GPR antenna can be characterized to determine a virtual sensor for the 2D FDTD model. The resulting sensor allows for a significantly smaller geometry, which saves time and computational resources while reducing differences in propagation associated with using a 2-dimensional instead of 3-dimensional model.
Download or read book LTBP News written by and published by . This book was released on 2016 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Assessing the condition of bridge deck surfaces using ground penetrating radar (GPR), using electromagnetic pulses to text, characterize, or detect subsurface anomalies.
Download or read book Using Ground Penetrating Radar and Infrared Thermography to Evaluate Concrete Bridge Decks written by Malcolm Kaytiong Lim and published by . This book was released on 1989 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nondestructive Testing to Identify Delaminations between HMA Layers written by National Academies of Sciences, Engineering, and Medicine and published by Transportation Research Board. This book was released on 2022 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Evaluation of Ground Penetrating Radar and Infrared Thermography for Concrete Pavement and Bridge Decks in Delaware written by David Rodman Mills and published by . This book was released on 1989 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Fourth International Conference on Ground Penetrating Radar written by Pauli Hänninen and published by . This book was released on 1992 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Detection of Common Concrete Bridge Deck Defects Using Thermography Impact Echo and Ground Penetrating Radar written by Saleh Z. Nabulsi and published by . This book was released on 2005 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Research Record written by and published by . This book was released on 1974 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DESIGN OF BRIDGE STRUCTURES Third Edition written by JAGADEESH, T. R. and published by PHI Learning Pvt. Ltd.. This book was released on 2020-03-01 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated third edition of the textbook on design of bridge structures continues to provide comprehensive coverage of both theory and design practice within a single capsule. It is intended for undergraduate and postgraduate students of civil engineering. It is also considered useful for practicing civil engineers and designers who need a ready reckoner on important design aspects on bridges. This third edition comes with three recent topics in bridge engineering. Chapters on limit state method design of concrete bridges, flyovers, and smart structural health monitoring of bridges, have been appended. The most distinguishing features of this edition comprise: • Design of concrete bridges based on both working stress and limit state methods • Detailed design drawings of bridges • Detailed overview of flyovers • Exposition to smart structural health monitoring of bridges • Computer programs in C on bridge design TARGET AUDIENCE • BE/BTech Civil Engineering • ME/MTech Civil Engineering
