Planning Design And Construction Of An Unbonded Concrete Overlay
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Planning Design And Construction Of An Unbonded Concrete Overlay
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Author : Amy F. McNeal
language : en
Publisher:
Release Date : 1996
Planning Design And Construction Of An Unbonded Concrete Overlay written by Amy F. McNeal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Pavements categories.
Bonded And Unbonded Concrete Overlay Design And Construction
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Author : Gerald F. Voigt
language : en
Publisher:
Release Date : 1987
Bonded And Unbonded Concrete Overlay Design And Construction written by Gerald F. Voigt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Design And Performance Of Unbonded Concrete Overlays On Concrete Pavement A Synthesis
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Author : Joseph Korzilius
language : en
Publisher:
Release Date : 2020
Design And Performance Of Unbonded Concrete Overlays On Concrete Pavement A Synthesis written by Joseph Korzilius and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Pavements categories.
Due to increased traffic congestion and reduced budgets, National Road Research Alliance (NRRA) states are seeking effective rehabilitation techniques for older concrete pavements. Unbonded concrete overlays have a successful history as a rehabilitation option, and there is interest by NRRA member states to assemble information on best practices for the design, construction, and maintenance that relate to field performance. The goal of this project is to produce a brief technical document synthesizing the design, construction, maintenance, best practices, and performance observations of unbonded concrete overlays in NRRA member states.
Construction Report For A Thin Unbonded Concrete Overlay On Minnesota Trunk Highway 53
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Author : Mark Watson
language : en
Publisher:
Release Date : 2010
Construction Report For A Thin Unbonded Concrete Overlay On Minnesota Trunk Highway 53 written by Mark Watson 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.
Unbonded concrete overlays are generally used to rehabilitate pavements by restoring lost ride and structural capacity. Historically, their design has been conservative (thick) due to the lack of a rational design method. In the summer of 2008, TH 53 near Duluth, MN, was rehabilitated with a thin (5-inch thick) unbonded concrete overlay. The Minnesota Department of Transportation (Mn/DOT) included the TH 53 overlay as part of a research project on thin unbonded concrete overlays. Falling weight deflectometer (FWD) measurements were taken both before and after construction. A short section of the project was instrumented with electronic sensors designed to collect environmental and load response data. The TH 53 test section is currently undergoing thorough evaluations and rigorous testing in accordance with the research project work plan. This report presents the initial baseline testing results, which include: distress survey and mapping, ride quality measurements, and structural testing. A visual distress survey, conducted in April 2009, revealed that approximately 40 transverse cracks have formed in the overlay over the nearly nine mile project length. FWD measurements indicate that the new pavement is providing good structural support.
Evaluation Of Unbonded Portland Cement Concrete Overlays
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Author :
language : en
Publisher:
Release Date : 1999
Evaluation Of Unbonded Portland Cement Concrete Overlays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Technology & Engineering categories.
Performance Of An Unbonded Concrete Overlay On I 74
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Author : Laura B. Heckel
language : en
Publisher:
Release Date : 2002
Performance Of An Unbonded Concrete Overlay On I 74 written by Laura B. Heckel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Pavements categories.
Development Of An Improved Design Procedure For Unbonded Concrete Overlays
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Author : Lev Khazanovich
language : en
Publisher:
Release Date : 2020
Development Of An Improved Design Procedure For Unbonded Concrete Overlays written by Lev Khazanovich and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Pavements categories.
An unbonded portland cement concrete overlay of concrete pavements (UBOL) is a rehabilitation technique in which the new overlay is isolated from the existing distressed pavement using a separator layer. Typically, a 1-to 2-in asphalt separator layer (or interlayer) is used. Recent innovations in the unbonded overlay technology have led to the adoption of new types of interlayers, such as non-woven geotextile fabric, as well as the use of overlays with joint spacings and layouts that are much shorter than conventional joint spacings. The effect of these design alternatives on the performance of the UBOL cannot be accounted for using currently available design procedures. This report documents the development of a new mechanistic-empirical design procedure for UBOL. It presents the results of laboratory and field studies; the calibration of an advanced structural (Totski) model that better captures the effects of the interlayer and separation between the overlay and the existing pavement; and the development of cracking and faulting performance prediction models for UBOL. The performance prediction models were incorporated into a rudimentary software tool, Pitt UBOL-ME, that can be used for the design and analysis of UBOL. Unlike prior UBOL design procedures, Pitt UBOL-ME can be used to quantify the effect of the performance of the interlayer on the performance of the UBOL and can be used for both conventional and short joint spacings.
Design And Construction Of Bonded Concrete Overlays
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Author :
language : en
Publisher:
Release Date : 1991
Design And Construction Of Bonded Concrete Overlays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Pavements, Concrete categories.
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.
Portland Cement Concrete Overlays
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Author : Kurt D. Smith
language : en
Publisher:
Release Date : 2002
Portland Cement Concrete Overlays written by Kurt D. Smith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Pavements categories.
This report presents the latest information on the design, construction and performance of portland cement concrete (PCC) overlays. It describes the four types of PCC overlays that are commonly used in highway pavement applications: bonded PCC overlays, unbonded PCC overlays, conventional whitetopping and ultra-thin whitetopping. Recommended applications, critical design elements, current overlay design methodologies, recommended construction practices, and performance highlights are described for each overlay type. Information is also provided on the selection of PCC overlays as possible rehabilitation alternatives for existing pavements. Taken together, this document addresses the current "state of the technology" of PCC overlays placed on both existing PCC pavements and on existing hot-mix asphalt pavements.