Improving Concrete Overlay Construction
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Improving Concrete Overlay Construction
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Author :
language : en
Publisher:
Release Date : 2010
Improving Concrete Overlay Construction written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Pavements categories.
As the US Highway system ages and available funding diminishes, transportation agencies are looking for effective methods for preserving and extending the life of existing pavements. These agencies are also being encouraged to minimize construction times and reduce the impact to the traveling public. Currently, the most common method of rehabilitating an existing roadway surface is through an HMA overlay; however, high oil prices have caused designers and agencies to consider other methods. One alternative to the traditional HMA overlay is a concrete overlay. The Iowa Department of Transportation (Iowa DOT) and Iowa counties and cities have completed about 1,000 miles of concrete overlays that are in use and are serving the traveling public today. Despite the completion of hundreds of projects, some agencies are reluctant to use concrete overlays, believing that they are expensive, difficult to build, and have limited application. To address these concerns, the National Concrete Pavement Technology Center at Iowa State University developed a guide document to assist engineers in concrete overlay design and construction. The Guide to Concrete Overlays was published in September 2008 and includes detailed information on evaluating existing pavements as concrete overlay candidates, selecting and designing the appropriate type of concrete overlay, and guidance on concrete overlay construction. Since the publication of this guide, the need has arisen to develop methods to improve concrete overlay efficiency utilizing current technology, investigate innovative materials for use as bond breakers, and reduce the inconvenience to the public with improved methods of traffic control and increased opening time.
Concrete Overlay Field Application Program
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Author : Gary Fick
language : en
Publisher:
Release Date : 2012
Concrete Overlay Field Application Program written by Gary Fick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Pavements categories.
The National Concrete Pavement Technology Center (CP Tech Center) at Iowa State University conducted a four-year, multi-state concrete overlay construction program to demonstrate and document the concept and benefits of various concrete overlay applications and provide real-world lessons. Teams of CP Tech Center I FHWA experts completed 26 field site visits in 18 states and provided workshops or technical assistance on overlay projects in six additional states. The site visits included four open house demonstration projects. A report with recommendations was prepared for each of the site visits. As a result of the site visits and recommendations, concrete overlays were either constructed or scheduled for construction in nine states, and the teams provided additional advice and assistance as requested during the course of these projects. During the site visits, workshops, project planning, and construction, the teams recognized opportunities to improve concrete overlay projects for a variety of applications, and the final report includes an overview of these lessons learned. Volume I of this final report outlines the field applications program purpose, activities, and results/lessons learned. Volume II includes copies of all documents prepared during the course of the program.
Improving Concrete Overlay Construction
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Author :
language : en
Publisher:
Release Date : 2010
Improving Concrete Overlay Construction written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Geotextiles categories.
With improved concrete overlay construction methods, transportation agencies can improve mobility, safety, and access to property.
Bonded Cement Based Material Overlays For The Repair The Lining Or The Strengthening Of Slabs Or Pavements
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Author : Benoît Bissonnette
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-03-16
Bonded Cement Based Material Overlays For The Repair The Lining Or The Strengthening Of Slabs Or Pavements written by Benoît Bissonnette and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-03-16 with Technology & Engineering categories.
Among different approaches that can be considered for concrete rehabilitation, bonded overlays are often the most economical alternative. The primary purpose of overlays is to extend the life of the candidate structures, either by restoring the quality and integrity of the surface and/or the re-establishing or improving the load-carrying capacity. Nevertheless, the durability of bonded overlay systems still draws concerns in the technical community because of bond sustainability problems encountered in a number of cases. At this time, there is still no accepted design approach or methodology that can warrant the practitioner a successful outcome of the repair. This State-of-Art report summarizes the findings with respect to all aspects involved in the overlaying process.
Improved Design Of Overlay Treatments To Concrete Pavements
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Author : C.. Coley
language : en
Publisher:
Release Date : 2006
Improved Design Of Overlay Treatments To Concrete Pavements written by C.. Coley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Pavements categories.
Resurfacing With Portland Cement Concrete
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Author : Ronald L. Hutchinson
language : en
Publisher: Transportation Research Board National Research
Release Date : 1982
Resurfacing With Portland Cement Concrete written by Ronald L. Hutchinson and has been published by Transportation Research Board National Research this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Technology & Engineering categories.
"This synthesis report will be of special interest to pavement designers, materials engineers, and other seeking information on portland cement concrete overlays placed over both concrete and asphalt pavements. Detailed information is presented on design, construction, and performance of such overlays."--Avant-propos.
Failure Distress And Repair Of Concrete Structures
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Author : Norb Delatte
language : en
Publisher: Elsevier
Release Date : 2009-10-26
Failure Distress And Repair Of Concrete Structures written by Norb Delatte and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-10-26 with Technology & Engineering categories.
Understanding and recognising failure mechanisms in concrete is a fundamental pre-requisite to determining the type of repair, or whether a repair is feasible. This title provides a review of concrete deterioration and damage, as well as looking at the problem of defects in concrete. It also discusses condition assessment and repair techniques. Part one discusses failure mechanisms in concrete and covers topics such as causes and mechanisms of deterioration in reinforced concrete, types of damage in concrete structures, types and causes of cracking and condition assessment of concrete structures. Part two reviews the repair of concrete structures with coverage of themes such as standards and guidelines for repairing concrete structures, methods of crack repair, repair materials, bonded concrete overlays, repairing and retrofitting concrete structures with fiber-reinforced polymers, patching deteriorated concrete structures and durability of repaired concrete. With its distinguished editor and international team of contributors, Failure and repair of concrete structures is a standard reference for civil engineers, architects and anyone working in the construction sector, as well as those concerned with ensuring the safety of concrete structures. Provides a review of concrete deterioration and damage Discusses condition assessment and repair techniques, standards and guidelines
Latex Modified Concrete Overlay Containing Type K Cement
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Author : Michael M. Sprinkel
language : en
Publisher:
Release Date : 2005
Latex Modified Concrete Overlay Containing Type K Cement written by Michael M. Sprinkel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Concrete bridges categories.
Hydraulic cement concrete overlays are usually placed on bridges to reduce the infiltration of water and chloride ions and to improve skid resistance, ride quality, and surface appearance. Constructed in accordance with prescription specifications, some overlays have performed well for more than 30 years whereas others have cracked and delaminated before the overlay was opened to traffic. Shrinkage of the concrete is the most common cause of cracking in overlays. The use of Type K (expansive) cement should increase the probability that concrete overlays with minimal cracks will be constructed. This report describes the Virginia Department of Transportation's first experience with the use of Type K cement for the construction of a latex-modified concrete overlay. One lane of the overlay was constructed with traditional Type I/II cement, and the other lane with Type K cement. With the exception of the cement, the requirements for the overlays were the same. The evaluation of the overlays included measurements for slump, temperature, air content, compressive strength, permeability to chloride ion, shrinkage, and bond strength. As expected, the shrinkage of the concrete containing Type K cement was much less than that of the concrete containing Type I/II cement. Other properties were similar. The use of Type K cement is estimated to increase the cost of the concrete approximately 2.6 percent, or about $1/yd2 for an overlay 1.5 in thick. This is much less than the cost to seal the shrinkage cracks in an overlay: $10/yd2. Greater savings can also come from the longer service life of a crack-free overlay. To gain more experience, the Virginia Department of Transportation should construct additional latex-modified concrete overlays using Type K cement.
Performance Specification For High Performance Concrete Overlays On Bridges
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Author : Michael M. Sprinkel
language : en
Publisher:
Release Date : 2004
Performance Specification For High Performance Concrete Overlays On Bridges written by Michael M. Sprinkel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Concrete bridges categories.
Hydraulic cement concrete overlays are usually placed on bridges to reduce the infiltration of water and chloride ions and to improve skid resistance, ride quality, and surface appearance. Constructed in accordance with prescription specifications, some overlays have performed well for more than 30 years whereas others have cracked and delaminated before the overlay was opened to traffic. The use of performance specifications should increase the probability that concrete overlays will be constructed with high bond strengths and minimal cracks and will perform well for many years. The report describes the Virginia Department of Transportation's (VDOT) first experience with the use of a performance specification for the construction and acceptance of a high performance concrete overlay. Acceptance and payment were based on measurements for air content, compressive strength, permeability to chloride ion, and bond strength. Target air contents, high compressive strengths, low permeability, and good bond strengths were maintained throughout the project. Performance specifications with adjustments to the compensation specified in the contract likely influenced decisions made by the contractor and material supplier, and VDOT obtained a better product. VDOT should use the performance specification developed for this project for future bridge overlay projects.
Guide To Concrete Overlays
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Author : Dale S. Harrington
language : en
Publisher:
Release Date : 2008
Guide To Concrete Overlays written by Dale S. Harrington and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Pavements categories.