Download or read book Plate and Tube Bridge Deck Evaluation in the Deck Test Bed of the Troutville Virginia Weigh Station written by Thomas E. Cousins and published by . This book was released on 2004 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report addresses the laboratory and field performance of multi-cellular fiber-reinforced polymer (FRP) composite bridge deck systems. We focus specifically on FRP decks produced from adhesively bonded pultrusions where the core of the deck possesses a square geometry running transversely to traffic. In laboratory tests, two schemes of loading patches were designed: a steel patch dimensioned according to the American Association of State Highway and Transportation Officials (AASHTO) Bridge Design Specifications, and a simulated tire patch constructed from an actual truck tire reinforced with silicon rubber. The stiffness, strength, and failure characteristics of the cellular FRP decks were examined using both loading patches. Our research shows that the effects of the stiffness and contact conditions of loading patches are significant. The simulated tire loading develops greater deflections given the same static load. The failure mode is localized and dominated by transverse bending failure of the composites under the simulated tire loading as compared to punching shear for the AASHTO recommended patch load. A field testing facility was designed and constructed in which FRP decks were installed, tested, and monitored to study the decks' in-service field performance. No significant loss of deck capacity was observed after field service. However, the long-term field monitoring and testing results showed that the unsupported edges (or free edges) are undesirable

Download or read book Perspectives in Civil Engineering written by Jeffrey S. Russell and published by ASCE Publications. This book was released on 2003-01-01 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains 27 papers that serve as a testament to the state-of-the-art of civil engineering at the outset of the 21st century, as well as to commemorate the ASCE's Sesquicentennial. Written by the leading practitioners, educators, and researchers of civil engineering, each of these peer-reviewed papers explores a particular aspect of civil engineering knowledge and practice. Each paper explores the development of a particular civil engineering specialty, including milestones and future barriers, constraints, and opportunities. The papers celebrate the history, heritage, and accomplishments of the profession in all facets of practice, including construction facilities, special structures, engineering mechanics, surveying and mapping, irrigation and water quality, forensics, computing, materials, geotechnical engineering, hydraulic engineering, and transportation engineering. While each paper is unique, collectively they provide a snapshot of the profession while offering thoughtful predictions of likely developments in the years to come. Together the papers illuminate the mounting complexity facing civil engineering stemming from rapid growth in scientific knowledge, technological development, and human populations, especially in the last 50 years. An overarching theme is the need for systems-level approaches and consideration from undergraduate education through advanced engineering materials, processes, technologies, and design methods and tools. These papers speak to the need for civil engineers of all specialties to recognize and embrace the growing interconnectedness of the global infrastructure, economy, society, and the need to work for more sustainable, life-cycle-oriented solutions. While embracing the past and the present, the papers collected here clearly have an eye on the future needs of ASCE and the civil engineering profession.

Download or read book Development of a Steel free FRP concrete Slab on grider Modular Bridge System written by Lijuan Cheng and published by . This book was released on 2005 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sandwich Plate System Bridge Deck Tests written by James David Martin and published by . This book was released on 2005 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Deck Evaluation Using Nondestructive Test Methods written by Tyler W. Robison and published by . This book was released on 2012 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Development of a Post to deck Connection for a TL 4 Steel tube Bridge Rail written by Pascual Mauricio and published by . This book was released on 2020 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new post-to-deck connection was designed for mounting an upcoming Manual for Assessing Safety Hardware, Second Edition (MASH 2016) Test Level 4 (TL-4) steel-tube bridge rail to the side of the bridge deck to limit the impact load transferred to the deck and to minimize the propensity for deck damage during impacts. With preference for the bridge rail system to be compatible for use on all deck configurations, the Illinois and Ohio Departments of Transportation desired the new system to attach to bridge decks comprised of concrete slabs or precast prestressed, concrete box-beam girders. A new post-to-deck connection for a new MASH 2016 TL-4 steel-tube bridge rail was developed and tested. The connection featured a W6x15 steel post to be side-mounted to bridge decks. A post-to-deck connection concept was developed and optimized through dynamic component testing. Lateral impacts were conducted on the design concepts, side-mounted to a concrete box-beam girder. For the dynamic component testing, post-to-deck connection configurations varied on the type of welded post assembly connecting to longitudinal tubes, which in turn mounted to various anchors cast within the box-beam girder. The resulting damage from each test varied from plastic deformation of the post between two plate attachments on the post assembly or post bending above one plate attachment due to the development of a plastic hinge near the surface of the deck. The post-to-deck connection featuring a singular plate attachment was recommended for use based on the post bending near the surface of the deck, as intended.

Download or read book ACI 546R 14 Guide to Concrete Repair written by American Concrete Institute and published by . This book was released on 2014 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Strengthening of Reinforced Concrete Structures written by L C Hollaway and published by Elsevier. This book was released on 1999-03-05 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: The in situ rehabilitation or upgrading of reinforced concrete members using bonded steel plates is an effective, convenient and economic method of improving structural performance. However, disadvantages inherent in the use of steel have stimulated research into the possibility of using fibre reinforced polymer (FRP) materials in its place, providing a non-corrosive, more versatile strengthening system. This book presents a detailed study of the flexural strengthening of reinforced and prestressed concrete members using fibre reinforces polymer composite plates. It is based to a large extent on material developed or provided by the consortium which studied the technology of plate bonding to upgrade structural units using carbon fibre / polymer composite materials. The research and trial tests were undertaken as part of the ROBUST project, one of several ventures in the UK Government's DTI-LINK Structural Composites Programme. The book has been designed for practising structural and civil engineers seeking to understand the principles and design technology of plate bonding, and for final year undergraduate and postgraduate engineers studying the principles of highway and bridge engineering and structural engineering. Detailed study of the flexural strengthening of reinforced and prestressed concrete members using fibre reinforced polymer composites Contains in-depth case histories

Download or read book History of Clearfield County Pennsylvania written by Lewis Cass Aldrich and published by . This book was released on 1887 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corks and Curls written by and published by . This book was released on 1912 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fiber reinforced plastic FRP Reinforcement for Concrete Structures written by Antonio Nanni and published by Elsevier Publishing Company. This book was released on 1993 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of fiber reinforced plastic (FRP) composites for prestressed and non-prestressed concrete reinforcement has developed into a technology with serious and substantial claims for the advancement of construction materials and methods. Research and development is now occurring worldwide. The 20 papers in this volume make a further contribution in advancing knowledge and acceptance of FRP composites for concrete reinforcement. The articles are divided into three parts. Part I introduces FRP reinforcement for concrete structures and describes general material properties and manufacturing meth.

Download or read book Externally Bonded FRP Reinforcement for RC Structures written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2001-01-01 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: In December 1996, the then CEB established a Task Group with the main objective to elaborate design guidelines for the use of FRP reinforcement in accordance with the design format of the CEB-FIP Model Code and Eurocode2. With the merger of CEB and FIP into fib in 1998, this Task Group became fib TG 9.3 FRP Reinforcement for concrete structures in Commission 9 Reinforcing and Prestressing Materials and Systems. The Task Group consists of about 60 members, representing most European universities, research institutes and industrial companies working in the field of advanced composite reinforcement for concrete structures, as well as corresponding members from Canada, Japan and USA. Meetings are held twice a year and on the research level its work is supported by the EU TMR (European Union Training and Mobility of Researchers) Network "ConFibreCrete”. The work of fib TG 9.3 is performed by five working parties (WP): Material Testing and Characterization (MT&C) Reinforced Concrete (RC) Prestressed Concrete (PC) Externally Bonded Reinforcement (EBR) Marketing and Applications (M&A) This technical report constitutes the work conducted as of to date by the EBR party. This bulletin gives detailed design guidelines on the use of FRP EBR, the practical execution and the quality control, based on the current expertise and state-of-the-art knowledge of the task group members. It is regarded as a progress report since it is not the aim of this report to cover all aspects of RC strengthening with composites. Instead, it focuses on those aspects that form the majority of the design problems. several of the topics presented are subject of ongoing research and development, and the details of some modelling approaches may be subject to future revisions. as knowledge in this field is advancing rapidly, the work of the EBR WP will continue. Inspite of this limit in scope, considerable effort has been made to present a bulletin that is today’s state-of-art in the area of strengthening of concrete structures by means of externally bonded FRP reinforcement.

Download or read book The Cornell Alumni News written by and published by . This book was released on 1905 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Non Metallic FRP Reinforcement for Concrete Structures written by L. Taerwe and published by CRC Press. This book was released on 1995-08-03 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dealing with a wide range of non-metallic materials, this book opens up possibilities of lighter, more durable structures. With contributions from leading international researchers and design engineers, it provides a complete overview of current knowledge on the subject.

Download or read book Public private Partnerships written by Sidney M. Levy and published by Amer Society of Civil Engineers. This book was released on 2011 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Levy demystifies public-private partnerships as an innovative solution to the challenges of designing, financing, building, and operating major infrastructure projects.

Download or read book Design of Reinforced Masonry Structures written by Narendra Taly and published by McGraw Hill Professional. This book was released on 2010-06-05 with total page 753 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Definitive Guide to Designing Reinforced Masonry Structures Fully updated to the 2009 International Building Code (2009 IBC) and the 2008 Masonry Standards Joint Committee (MSJC-08), Design of Reinforced Masonry Structures, second edition, presents the latest methods for designing strong, safe, and economical structures with reinforced masonry. The book is packed with more than 425 illustrations and a wealth of new, detailed examples. This state-of-the-art guide features strength design philosophy for reinforced masonry structures based on ASCE 7-05 design loads for wind and seismic design. Written by an internationally acclaimed author, this essential professional tool takes you step-by-step through the art, science, and engineering of reinforced masonry structures. COVERAGE INCLUDES: Masonry units and their applications Materials of masonry construction Flexural analysis and design Columns Walls under gravity and transverse loads Shear walls Retaining and subterranean walls General design and construction considerations Anchorage to masonry Design aids and tables