Download or read book Evaluation of Composite Pavement Unbonded Overlays written by James K. Cable and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, thin whitetopping has evolved as a viable rehabilitation technique for deteriorated asphalt cement concrete (ACC) pavements. Numerous projects have been constructed and tested; these projects allow researchers to identify the important elements contributing to the projects' successes. These elements include surface preparation, overlay thickness, synthetic fiber reinforcement usage, joint spacing, and joint sealing. Although the main factors affecting thin whitetopping performance have been identified by previous research, questions still existed as to the optimum design incorporating these variables. The objective of this research is to investigate the interaction between these variables over time. Laboratory testing and field-testing were planned in order to accomplish the research objective. Laboratory testing involved shear testing of the bond between the portland cement concrete (PCC) overlay and the ACC surface. Field-testing involved falling weight deflectometer deflection responses, measurement of joint faulting and joint opening, and visual distress surveys on the 9.6-mile project. The project was located on Iowa Highway 13 extending north from the city of Manchester, Iowa, to Iowa Highway 3 in Delaware County. Variables investigated included ACC surface preparation, PCC thickness, synthetic fiber reinforcement usage, and joint spacing. This report documents the planning, equipment selection, construction, field changes, and construction concerns of the project built in 2002. The data from this research could be combined with historical data to develop a design specification for the construction of thin, unbonded overlays.
Download or read book Evaluation of Composite Pavement Unbonded Overlays written by James K. Cable and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, thin whitetopping has evolved as a viable rehabilitation technique for deteriorated asphalt cement concrete (ACC) pavements. Numerous projects have been constructed and tested, allowing researchers to identify the important elements contributing to the projects' successes. These elements include surface preparation, overlay thickness, synthetic fiber reinforcement usage, joint spacing, and joint sealing. Although the main factors affecting thin whitetopping performance have been identified by previous research, questions still existed as to the optimum design incorporating these variables. The objective of this research is to investigate the interaction between these variables over time. Laboratory testing and field testing were conducted to achieve the research objectives. Laboratory testing involved shear testing of the bond between the portland cement concrete (PCC) overlay and the ACC surface. Field testing involved falling weight deflectometer deflection responses, measurement of joint faulting and joint opening, and visual distress surveys on the 9.6 mile project. The project was located on Iowa Highway 13 extending north from the city of Manchester, Iowa to Iowa Highway 3 in Delaware County. Variables investigated include ACC surface preparation, PCC thickness, slab size, synthetic fiber reinforcement usage, and joint spacing. This report documents the planning, construction, and performance of each variable in the time period from summer 2002 through spring 2006. The project has performed well with only minor distress identification since its construction.
Download or read book Review of ODOT s Overlay Design Procedures HMA overlays of existing HMA and composite pavements written by and published by . This book was released on 2008 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: ODOT initiated this research study to determine (1) the impact of milling off portions of the existing pavement on the structural capacity of the remaining pavement and (2) whether currently recommended HMA structural coefficients adequately reflect the structural properties of new HMA overlay materials. The study mainly focused on the impact of milling on the design of HMA overlays over existing flexible pavements and composite pavements. Volume I of the report deals with this main study focus area. During the course of the study, an additional focus area was added to the project to investigate the impact of completely milling off existing HMA layers in composite pavement systems on unbonded overlay design. Volume II of this report deals with impact of milling on unbonded overlays. Volume I describes the structural evaluation of individual flexible and composite pavement projects located at different sites throughout Ohio, as well as an analysis of the evaluation results to develop enhancements to the ODOT HMA overlay design procedure as needed. The report presents detailed descriptions of the projects evaluated, field testing procedures employed, procedures adopted for analyzing field testing data and other data collected, structural evaluation results, analysis of results, and recommendations for improvements of the current ODOT overlay design procedure. Volume II presents descriptions of the data collected, data analysis, observations, and recommendations for improvements of the current ODOT overlay design procedure.
Download or read book Evaluating Unbonded Concrete Overlay for Usage on Ontario Residential Streets written by Rahanuma S. Wafa and published by . This book was released on 2018 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite pavements have become increasingly common in North America, these pavements usually result from the rehabilitation of Portland cement concrete (PCC) pavements. When a PCC pavement reaches close to the end of its service life, a layer of Hot-Mix Asphalt (HMA) is placed to increase service life. However, with time, increasing traffic loads and other environmental factors, the composite pavements are experiencing heavy distresses. This research focused on developing a solution that would allow long-term pavement performance; concrete overlays have been deemed successful in many parts of North America, mainly on highways. This study looks at the design, construction, testing and monitoring of a concrete overlay on a residential road, the first of its kind in Ontario, Canada.
Download or read book Evaluation of Unbonded Portland Cement Concrete Overlays written by and published by . This book was released on 1999 with total page 92 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 Review of ODOT s Overlay Design Procedures written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ODOT initiated this research study to determine (1) the impact of milling off portions of the existing pavement on the structural capacity of the remaining pavement and (2) whether currently recommended HMA structural coefficients adequately reflect the structural properties of new HMA overlay materials. The study mainly focused on the impact of milling on the design of HMA overlays over existing flexible pavements and composite pavements. Volume I of the report deals with this main study focus area. During the course of the study, an additional focus area was added to the project to investigate the impact of completely milling off existing HMA layers in composite pavement systems on unbonded overlay design. Volume II of this report deals with impact of milling on unbonded overlays. Volume I describes the structural evaluation of individual flexible and composite pavement projects located at different sites throughout Ohio, as well as an analysis of the evaluation results to develop enhancements to the ODOT HMA overlay design procedure as needed. The report presents detailed descriptions of the projects evaluated, field testing procedures employed, procedures adopted for analyzing field testing data and other data collected, structural evaluation results, analysis of results, and recommendations for improvements of the current ODOT overlay design procedure. Volume II presents descriptions of the data collected, data analysis, observations, and recommendations for improvements of the current ODOT overlay design procedure.
Download or read book Performance Evaluation of Concrete Overlays written by David L. Lippert and published by . This book was released on 1988 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Fiber reinforced Unbonded Overlay written by Tim Chojnacki and published by . This book was released on 2000 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Planning Design and Construction of an Unbonded Concrete Overlay written by Amy F. McNeal and published by . This book was released on 1996 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation Using Nondestructive Testing and Overlay Design written by Hisao Tomita and published by . This book was released on 1983 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HVS Evaluation of Flexible Overlays on Composite Pavement written by Yusuf A. Mehta and published by . This book was released on 2018 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Unbonded Portland Cement Concrete Overlays written by and published by . This book was released on 1999 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains the findings of a study that was performed to evaluate existing methods for rehabilitating portland cement concrete pavements with unbonded concrete overlays and to develop guidelines for their use. The report provides a comprehensive description of the research and includes detailed guidelines for the design and construction on unbonded portland cement concrete overlays.
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 Rehabilitation of Rutted Asphalt Pavements written by Ahmad Ardani and published by . This book was released on 1993 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation for Implementation of the Mechanistic empirical Pavement Design Guide in Michigan written by Neeraj J. Buch and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objectives of Task 2 of the project were to determine the impact of various input variables on the predicted pavement performance for the selected rehabilitation design alternatives in the MEPDG/DARWin-ME, and to verify the pavement performance models for MDOT rehabilitation design practice. In general, for HMA over HMA, the overlay thickness and HMA volumetrics are the most significant inputs for the overlay layer while the existing thickness and pavement condition rating have a significant effect on pavement performance among the inputs related to the existing pavement. For composite pavements, overlay thickness and HMA air voids are significant inputs for the overlay layer. In addition, among the inputs related to the existing intact PCC pavement, the existing thickness and PCC layer modulus have a significant effect on pavement performance. For rubblized pavements, the HMA air voids and effective binder content are the most significant inputs for the overlay layer. Furthermore, for longitudinal cracking and IRI, existing PCC thickness is more important as compared to the existing PCC layer modulus. However, existing PCC layer modulus is more significant for alligator cracking and rutting. For unbonded overlays, all overlay related inputs significantly impact the cracking performance while the PCC elastic modulus is the most important among inputs related to existing layers. The interaction between overlay air voids and existing pavement thickness significantly impacts all performance measures among HMA rehabilitation options. The interaction between overlay thickness and existing PCC layer modulus is the most significant effect on unbonded overlay performance. It should be noted that all analyses were conducted using the inputs ranges reflecting Michigan practices. The verification of the performance prediction models based on the selected projects for different rehabilitation options show the need for local calibration.
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:
