Download or read book Status of Thin bonded Concrete Overlays written by Robert H. Gausman and published by . This book was released on 1986 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Demonstration Projects Division of the Federal Highway Administration has been involved in the evaluation of a number of thin-bonded overlays since 1979. This report presents the status of those projects and includes a summary of some of the more important findings to date.

Download or read book Evaluation of Bonded Concrete Overlays on Asphalt Pavements written by Linda M. Pierce and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of thin bonded concrete overlays on asphalt (BCOAs) as a rehabilitation treatment first gained momentum in the 1990s. Since the first documented thin BCOA application in the United States, in Louisville, Kentucky, in 1991, BCOAs have seen a dramatic increase in popularity. The TRB National Cooperative Highway Research Program's NCHRP Research Report 1007: Evaluation of Bonded Concrete Overlays on Asphalt Pavements documents BCOA practices through a literature review and agency survey; documents performance through site investigations that assessed in-service design, construction, performance, preservation, and rehabilitation; and compares the results of current design methods with actual performance. Supplemental to the report is NCHRP Web-Only Document 329: Bonded Concrete Overlays on Asphalt Pavements: Resources for Evaluation, which provides Appendices A through G of the contractor's final report.

Download or read book Bonded Concrete Overlays on Asphalt Pavements written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 329: Bonded Concrete Overlays on Asphalt Pavements: Resources for Evaluation provides Appendices A through G of the contractor’s final report, which detail survey responses from transportation agencies on bonded concrete overlays on asphalt pavements as well as agency plans and projects. The document is supplemental to NCHRP Research Report 1007: Evaluation of Bonded Concrete Overlays on Asphalt Pavements.

Download or read book Field Evaluation of Bonded Concrete Overlays written by Shiraz D. Tayabji and published by . This book was released on 1986 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field load testing was conducted by CTL at five sites in Iowa during April 1986. This report presents the results of field testing, analysis of results, and recommendations to incorporate study results in Iowa's design procedure for bonded concrete overlays.

Download or read book Techniques and Procedures for Bonded Concrete Overlays written by Manuel Treviño and published by . This book was released on 2004 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Portland Cement Concrete Overlays written by Kurt D. Smith and published by . This book was released on 2002 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Guide to Concrete Overlays written by Dale S. Harrington and published by . This book was released on 2008 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Concrete Pavement Overlays on U S 58 in Virginia written by Michael Sprinkel and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt overlays are typically used to extend the life of continuously reinforced concrete pavement (CRCP) because they can be placed in one or more layers while traffic uses the adjacent lane and can be opened to traffic in a short time. Hydraulic cement concrete overlays have also been used to extend the life of CRCP but have often not been considered an alternative to asphalt because of the higher cost and longer curing time. In 2012, the Virginia Department of Transportation rehabilitated a 4.8-mi section of the westbound lanes of a CRCP on U.S. 58 in Southampton County using a 4-in-thick bonded concrete overlay and a 7-in-thick unbonded concrete overlay with a 1-in asphalt separation layer. The four-lane, divided primary highway is an 8-in-thick CRCP placed over a 6-in cement-treated aggregate layer. Saw cutting was used to form joints at 6 ft by 6 ft panels for an unbonded overlay, and tie bars were used along the centerline of the pavement and along both shoulders. A concrete overlay was placed on the shoulders of the unbonded overlay, and asphalt was placed on the shoulders of the bonded overlay. Two layers of asphalt with a total thickness of 5 in were placed on a 9.75-mi section of the eastbound lane of U.S. 58, which provided cost information that was used to compare the alternatives. Since traffic management was very different for the two projects, definitive conclusions on the total cost of asphalt versus concrete overlays could not be drawn. On the basis of material costs alone, concrete and asphalt can be competitive options for extending the service life of CRCP. Construction of the concrete overlays was successfully executed on time. The concrete was of high quality with good strength and low permeability. The bonded overlay is well bonded. The ride quality was much better than for the original pavement. Using the initial cost of materials in-place, the cost of the bonded and unbonded overlays was approximately the same, at an average of 3 dollars 6 to 3 dollars 8 per square yard. The unit cost of patching concrete pavements is approximately 6 times the cost of the bonded concrete overlay and approximately 4 times the cost of an unbonded overlay. VDOTs Materials Division should consider the use of bonded concrete overlays to extend the life of CRCPs that are in good condition and need little patching (

Download or read book Structural Overlay Strategies for Jointed Concrete Pavements written by and published by . This book was released on 1990 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to Thin Concrete Pavement Overlays for Professional Engineers written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2023-02-12 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil engineers and construction managers interested in thin concrete overlays for street and highway pavements. Here is what is discussed: 1. INTRODUCTION, 2. OVERVIEW OF THIN CONCRETE OVERLAYS, 3. DESIGN OF THIN CONCRETE OVERLAYS, 4. CONSTRUCTION OF THIN CONCRETE OVERLAYS, 5. COST, 6. CASE STUDIES, 7. SUMMARY.

Download or read book Delamination of Bonded Concrete Overlays at Early Ages written by James Ray Lundy and published by . This book was released on 1991 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: A procedure is developed by which the likelihood of delamination of bonded concrete overlays on continuously reinforced concrete pavements is reduced. The procedure compares the early age interface stress to the expected interface bond strength for a variety of environmental conditions. When the calculated stress exceeds the expected strength, it is recommended that overlay placement be curtailed until the possibility of debonding is reduced. A finite element method program is used to determine the early age stresses resulting from temperature and shrinkage induced volume changes. Stresses were determined for a variety of environmental and material combinations and overlay thicknesses. Analyses show that a significant reduction in stress results from the use of overlay materials which have a lower modulus and thermal coefficient than those of the existing slab. The stresses for a given combination of materials and environmental conditions are compared to the interface bond strength at early ages. Early age interface shear and tensile strengths are estimated from 7-day strength test results. The estimated strength, together with the variability of the interface strength, are used to calculate the likelihood of delamination for a given type of overlay and time of placement. This likelihood can be reduced through the selection of a different overlay material or time of placement.

Download or read book Guide to Concrete Overlay Solutions written by and published by . This book was released on 2007 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide will help readers understand concrete overlays and develop confidence in their application. The guide provides the key elements of the six major types of concrete overlays along with specifics on materials, typical sections, and important construction elements.

Download or read book Guide to the Design of Concrete Overlays Using Existing Methodologies written by Helga N. Torres and published by . This book was released on 2012 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Guide to the Design of Concrete Overlays using existing methodologies is a product of the National Concrete Pavement Technology Center at Iowa State University's Institute for Transportation. The guide provides decision makers and practitioners with straightforward, simple guidance for the design off concrete overlays using existing methodologies. The guide focuses on four commonly used methods: The method described i the 1993 American Association of State Highway and Transportation Officials (AASHTO) Guide for Design of Pavement Structures, 4th edition; The method described in the AASHTO Mechanistic-Empirical Pavement Design Guide, Interim Edition: a Manual of Practice; The American Concrete Pavement Association (ACPA) modified method for bonded concrete overlays of asphalt pavements; The Colorado Department of Transportation method for bonded concrete overlays of asphalt pavements. The guide discusses specific design assumptions, deficiencies, and strengths inherent in each method, as well as step-by-step design examples for typical pavement sections. This guide is intended to be used in conjunction with the corresponding design procedures' documentation/references, such as the 1993 AASHTO Guide for Design of Pavement Structures and/or computer software for the AASHTO Mechanistic-Empirical Pavement Design Guide and ACPA methods.

Download or read book Using Existing Pavement in Place and Achieving Long Life written by Newton Jackson, Jason Puccinelli, and Joe Mahoney and published by Transportation Research Board. This book was released on with total page 300 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, focuses on improving the ability of highway agencies to design and construct long-lasting highway projects with minimal disruption to the traveling public.

Download or read book Performance of Thin Bonded Concrete Overlays in Illinois written by Tessa H. Volle and published by . This book was released on 2000 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidelines for Bonded Concrete Overlays written by American Concrete Pavement Association and published by . This book was released on 1990 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Construction of Bonded Concrete Overlays written by and published by . This book was released on 1991 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: