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Simplified Techniques For Evaluation And Interpretation Of Pavement Deflections For Network Level Analysis
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Author :U.s. Department of Transportation Publisher :Createspace Independent Publishing Platform ISBN 13 :9781723459320 Total Pages :202 pages Book Rating :4.4/5 (593 download)
Book Synopsis Simplified Techniques for Evaluation and Interpretation of Pavement Deflections for Network-level Analysis by : U.s. Department of Transportation
Download or read book Simplified Techniques for Evaluation and Interpretation of Pavement Deflections for Network-level Analysis written by U.s. Department of Transportation and published by Createspace Independent Publishing Platform. This book was released on 2018-07-23 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simplified techniques for evaluation and interpretation of pavement deflections for network-level analysis /
Book Synopsis Simplified Techniques for Evaluation and Interpretation of Pavement Deflections for Network-level Analysis by :
Download or read book Simplified Techniques for Evaluation and Interpretation of Pavement Deflections for Network-level Analysis written by and published by . This book was released on 2012 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to develop an approach for incorporating techniques to interpret and evaluate deflection data for network-level pavement management system (PMS) applications. The first part of this research focused on identifying and evaluating existing techniques, seeking out those that were simple, reliable, and easy to incorporate into current PMS practices, as well as those that produced consistent results. The second part of the research detailed the development of guidelines for the application of recommended techniques and procedures for determining optimum falling weight deflectometer (FWD) test spacing and data collection frequency. While there are many viable techniques available for evaluating the structural capacity of pavements that use FWD for project-level analysis, many of these techniques are time consuming and require an experienced analyst. As a result, using pavement deflection testing for network-level analysis has been limited to date. This guide provides information for the assessment of pavement structural performance for PMS applications. It reflects the general findings presented in the accompanying final report, Simplified Techniques for Evaluation and Interpretation of Pavement Deflections for Network-Level Analysis (FHWA-HRT-12-023).
Book Synopsis Simplified Techniques for Evaluation and Interpretation of Pavement Deflections for Network-level Analysis by : Régis Luis Carvalho
Download or read book Simplified Techniques for Evaluation and Interpretation of Pavement Deflections for Network-level Analysis written by Régis Luis Carvalho and published by . This book was released on 2012 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simplified Techniques for Evaluation and Interpretation of Pavement Deflections for Network-level Analysis by : Régis Luis Carvalho
Download or read book Simplified Techniques for Evaluation and Interpretation of Pavement Deflections for Network-level Analysis written by Régis Luis Carvalho and published by . This book was released on 2012 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transportation Research by : Dharamveer Singh
Download or read book Transportation Research written by Dharamveer Singh and published by Springer Nature. This book was released on 2024-01-22 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of selected research papers from the 14th conference of the Transportation Planning and Implementation Methodologies for Developing Countries (TPMDC). It covers the broad area of transportation planning and policy, pavement design and engineering, emerging technologies in transportation, traffic management, operations, and safety, and sustainable mobility in transportation. The book aims to provide deeper understanding of the transportation issues, solutions, and learnings from the implemented solutions. This book will be of best interest for academicians, researchers, policy makers, and practitioners.
Book Synopsis Network Level Testing for Pavement Structural Evaluation Using a Rolling Wheel Deflectometer by : Daba S. Gedafa
Download or read book Network Level Testing for Pavement Structural Evaluation Using a Rolling Wheel Deflectometer written by Daba S. Gedafa and published by . This book was released on 2010 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural evaluation can be very useful at the network level of pavement management for project prioritization purposes. However, due to expenses involved in data collection and analysis, pavements are not tested for structural capacity at the network level. Rolling wheel deflectometer (RWD), which measures surface deflections at highway speed, is an alternate, faster method of pavement deflection testing for network level data collection. This study was initiated to assess the feasibility of using RWD for network level pavement deflection measurements. RWD deflection data was collected under an 80-kN axle load and at about highway speed on non-interstate highways in northeast Kansas in July 2006. Falling-wheel deflectometer (FWD) data on these roads, collected from 1998 to 2006, were also used for comparison. The computed effective structural numbers from both FWD and RWD deflection data were compared. The results show that the deflections measured by RWD and the center (first sensor) deflections from FWD are statistically similar. The effective structural numbers computed from the FWD and RWD deflection measurements are also statistically similar. Thus RWD appears to be a valuable tool for structural capacity evaluation of pavements at the network level.
Book Synopsis Manual on Pavement Evaluation Techniques by : Satish Chandra
Download or read book Manual on Pavement Evaluation Techniques written by Satish Chandra and published by . This book was released on 2021-08-23 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pavement evaluation techniques which involve the use of state-of-art technologies and tools for functional and structural evaluation of pavements have become necessity today for health monitoring of road infrastructure and to take appropriate decisions for maintenance, planning and budgeting of road network based on scientific tools. The state-of-art infrastructure facilities available at CSIR-Central Road Research Institute motivates us to write this manual which concisely covers all the major equipment of pavement evaluation, so that the students and field practitioners understand the methodology and follow the correct procedure for functional and structural evaluation of pavement for various purposes. The first chapter of the manual deals with the evaluation of pavement surface roughness for rating the roads as per riding quality criteria. Apart from the methodology for roughness measurement using various equipment, this chapter will help the readers for deciding the appropriate technology depending upon the location and type of the road under study. Second chapter of the manual is related to the micro and macro level assessment of pavement surface characteristics which are related to the measurement of pavement surface texture, skid resistance and polish stone value, to ensure the safe riding pavement surface. Third chapter covers the details about distresses observed on flexible pavements and their measurement techniques. Details of most dominating distresses along with illustrating photographs and severity levels are also given in this chapter. Fourth chapter gives details of axle load surveys using static and weigh-in-motion systems which are required to know the current loading pattern on the project roads for their upgradation and various maintenance needs. Calculation of vehicle damage factor with examples has also been included in this chapter. The fifth chapter deals with the structural health monitoring of roads using Benkelman Beam and Falling Weight Deflection techniques. The details of these two methods and their measurements techniques are given in details with example for estimating the overlay needs using Falling Weight Deflectometer Technique. The use of Network Survey vehicle has also become necessity for road asset and pavement condition monitoring for development of pavement maintenance management systems at network level. The details of a typical network survey vehicle system including its calibration and validation details are given in chapter six. This chapter also includes the tentative specifications of Network Survey Vehicle System to meet the requirements of road asset management systems. We are hopeful that the readers will find the book useful as the procedures of pavement evaluation using equipment have been demonstrated in a simplified way. Suggestion and observations for further improvement of the manual are welcome.
Book Synopsis Simplified Deflection-based Probabilistic Technique for Network-level Pavement Analysis by : Larry Wiser
Download or read book Simplified Deflection-based Probabilistic Technique for Network-level Pavement Analysis written by Larry Wiser and published by . This book was released on 2012 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of a pavement management system (PMS) was developed following the successful AASHTO Road Test, in the 1950s, when pavement performance was characterized as "the necessary information to compare design alternatives and expectations over the service life of both flexible and rigid pavement structures." A link was established between performance and the activities of planning, designing, constructing, and maintaining pavements, and the concept of a "PMS" was defined accordingly. Currently, surface distress and roughness measurements are the main components in determining a pavement's existing condition in a PMS. The structural condition, although capable of providing important information on how the pavement will perform in the future (rate of deterioration, types and severity of expected distresses, etc.), is not widely used. Reasons for this lack of presence in a system-wide PMS are mostly related to time-consuming analyses and the need for an experienced analyst. This paper presents the development of simplified, deflection-based analytical techniques that provide rapid, automated screening of pavement's structural capacity for inclusion in a network-level PMS. The approach is based on stochastic-logistic modeling commonly used in reliability engineering. Data from the Long-Term Pavement Performance database was used to develop appropriate models, which relate the expected future performance to deflection-based parameters extracted analytically from falling weight deflectometer deflection basins and site-specific conditions such as climate and traffic. It is of paramount importance to consider the existing structural capacity of pavements together with pavement distresses in order to predict future pavement conditions more accurately and thus successfully fulfill the overall goals of the original concept of "pavement management.".
Book Synopsis Bearing Capacity of Roads, Railways and Airfields by : Andreas Loizos
Download or read book Bearing Capacity of Roads, Railways and Airfields written by Andreas Loizos and published by CRC Press. This book was released on 2017-07-20 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bearing Capacity of Roads, Railways and Airfields includes the contributions to the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017, 28-30 June 2017, Athens, Greece). The papers cover aspects related to materials, laboratory testing, design, construction, maintenance and management systems of transport infrastructure, and focus on roads, railways and airfields. Additional aspects that concern new materials and characterization, alternative rehabilitation techniques, technological advances as well as pavement and railway track substructure sustainability are included. The contributions discuss new concepts and innovative solutions, and are concentrated but not limited on the following topics: · Unbound aggregate materials and soil properties · Bound materials characteritics, mechanical properties and testing · Effect of traffic loading · In-situ measurements techniques and monitoring · Structural evaluation · Pavement serviceability condition · Rehabilitation and maintenance issues · Geophysical assessment · Stabilization and reinforcement · Performance modeling · Environmental challenges · Life cycle assessment and sustainability Bearing Capacity of Roads, Railways and Airfields is essential reading for academics and professionals involved or interested in transport infrastructure systems, in particular roads, railways and airfields.
Book Synopsis Network-Level Pavement Deflection Testing and Structural Evaluation by : M. Hossain
Download or read book Network-Level Pavement Deflection Testing and Structural Evaluation written by M. Hossain and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural evaluation provides valuable information about the expected behavior of pavements and can be very useful at the network level of pavement management for project prioritization purposes. However, due to the expense involved in data collection and analysis, structural capacity is usually not determined at the network level. In Kansas, due to limited resources and the large size of the network (10 971 miles), annual network-level structural data collection at the same rate (five to ten tests per mile) as the project level is not realistic. This study was initiated to determine the sample size (% mileage) at the network level as well as the test intervals and frequency that can be used as guides for network-level deflection testing and structural evaluation of pavements.
Book Synopsis Pavement Structural Evaluation at the Network Level by :
Download or read book Pavement Structural Evaluation at the Network Level written by and published by . This book was released on 2016 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pavement Structural Evaluation at the Network Level by : Gonzalo R. Rada
Download or read book Pavement Structural Evaluation at the Network Level written by Gonzalo R. Rada and published by . This book was released on 2016 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: As State transportation departments consider structural adequacy as part of their routine pavement management system (PMS) activities by incorporating deflection testing, it is important to advance their practices from measuring deflection using falling weight deflectometers, which involves a slow, stop-and-go operation and requires lane closures, to a more viable alternative for network-level pavement management applications. The development of moving deflection testing devices that can measure pavement responses at traffic speeds represents this more viable alternative. The modern versions of the moving deflection testing devices that are actively used today include the Traffic Speed Deflectometer (TSD) and a Rolling Wheel Deflectometer (RWD). The goal of this project was to establish a reliable measure of the structural condition of bound pavement layers above the unbound base layer as it deteriorates over time under traffic and environmental loading based on moving pavement deflection technology measuring at traffic speeds. Moreover, this measure needed to be robust enough in capturing the structural condition or deterioration of the pavement layer notwithstanding the seasonal and spatial variation in base and subgrade layers. As part of the project, a literature review was conducted, and questionnaires were developed for device manufacturers, owners, and users, which were then followed up by interviews. Both the TSD and RWD were found to be potentially viable devices. Based on this finding, a work plan was developed and implemented to evaluate if the two devices met a minimum set of specifications related to the structural evaluation of pavements at the network level including accuracy and precision of deflection measurements, monitoring applied load, operating speed, and distance between deflection measurements. Field evaluations and validation analyses were completed in accordance with the work plan. Ultimately, analysis methodologies and processes were developed for incorporating pavement structural information within highway agencies' PMS applications.
Book Synopsis Surface Deflections and Pavement Evaluation by : William G. Whitcomb
Download or read book Surface Deflections and Pavement Evaluation written by William G. Whitcomb and published by . This book was released on 1982 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanistic Interpretation of Nondestructive Pavement Testing Deflections by : Mario S. Hoffman
Download or read book Mechanistic Interpretation of Nondestructive Pavement Testing Deflections written by Mario S. Hoffman and published by . This book was released on 1981 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pavement Evaluation by Deflection by :
Download or read book Pavement Evaluation by Deflection written by and published by . This book was released on 1974 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Mechanistic Analysis of Pavement Deflections on Subgrades Varying in Stiffness with Depth by : Gustav Theodor Rohde
Download or read book The Mechanistic Analysis of Pavement Deflections on Subgrades Varying in Stiffness with Depth written by Gustav Theodor Rohde and published by . This book was released on 1990 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface Deflections of Perpetual Pavement Sections by : Douglas A. Steele
Download or read book Surface Deflections of Perpetual Pavement Sections written by Douglas A. Steele and published by . This book was released on 2012 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural evaluation provides valuable information at the network level of pavement management for project evaluation and prioritization purposes. However, due to the expenses involved in data collection and analysis, structural capacity is usually not evaluated at the network level. A rolling-wheel deflectometer (RWD), which measures surface deflections at highway speed, can be an alternate, faster method of pavement deflection evaluation for network-level data collection. This study was initiated in order to assess the feasibility of using an RWD for network-level pavement deflection measurements. RWD deflection data were collected under an 80 kN axle load and at a highway speed of about 88 km/h on four perpetual pavement sections in Kansas. Falling-weight deflectometer (FWD) data were also collected concurrently. The FWD first-sensor deflections were normalized to a load of 40 kN and then corrected to a temperature of 20° C. The RWD deflections were also corrected for temperature. FWD and RWD center deflections were then compared statistically. The results show that the deflections measured by RWD and the center (first sensor) deflections from the FWD are statistically similar. Furthermore, there is a linear relationship between FWD and RWD center deflections for all sections.
