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Download or read book NCHRP Report 555 written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Eyad Masad
Publisher : Transportation Research Board
ISBN 13 : 0309098823
Total Pages : 94 pages
Book Rating : 4.3/5 (9 download)
Download or read book Test Methods for Characterizing Aggregate Shape, Texture, and Angularity written by Eyad Masad and published by Transportation Research Board. This book was released on 2007 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Report 555: Test Methods for Characterizing Aggregate Shape, Texture, and Angularity examines a methodology for classifying aggregates based on the distribution of shape, texture, and angularity characteristics. The report also explores a test method that it is appropriate for use in central and field laboratories, which measures shape, texture, and angularity characteristics of aggregates used in hot-mix asphalt, hydraulic cement concrete, and unbound base and subbase layers of pavements. Appendixes for the report were published as NCHRP Web-Only Document 80"--Publisher's description.
Download or read book Appendixes to NCHRP Report 555 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This document contains appendixes B through E of NCHRP Report 555. The appendixes are as follows: (B) Review of Aggregate Characteristics Affecting Pavement Performance; (C) Image Analysis Methods for Characterizing Aggregate Shape Properties; (D) Test Methods for Measuring Aggregate Characteristics; and (E) Photographs of Aggregate Samples.
Author : Brian D. Prowell
Publisher : Transportation Research Board
ISBN 13 : 0309088259
Total Pages : 101 pages
Book Rating : 4.3/5 (9 download)
Download or read book Aggregate Properties and the Performance of Superpave-designed Hot Mix Asphalt written by Brian D. Prowell and published by Transportation Research Board. This book was released on 2005 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Aggregate Shape Properties Using a Computer Automated System written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Shape, texture, and angularity are among the properties of aggregates that have a significant effect on the performance of hot-mix asphalt, hydraulic cement concrete, and unbound base and subbase layers. Consequently, there is a need to develop methods that can quantify aggregate shape properties rapidly and accurately. In this study, an improved version of the Aggregate Imaging System (AIMS) was developed to measure the shape characteristics of both fine and coarse aggregates. Improvements were made in the design of the hardware and software components of AIMS to enhance its operational characteristics, reduce human errors, and enhance the automation of test procedure. AIMS was compared against other test methods that have been used for measuring aggregate shape characteristics. The comparison was conducted based on statistical analysis of the accuracy, repeatability, reproducibility, cost, and operational characteristics (e.g. ease of use and interpretation of the results) of these tests. Aggregates that represent a wide range of geographic locations, rock type, and shape characteristics were used in this evaluation. The comparative analysis among the different test methods was conducted using the comparative analysis among the different test methods was conducted using the Analytical Hierarchy Process (AHP). AHP is a process of developing a numerical score to rank test methods based on how each method meets certain criteria of desirable characteristics. The outcomes of the AHP analysis clearly demonstrated the advantages of AIMS over other test methods as a unified system for measuring the shape characteristics of both fine and coarse aggregates. A new aggregate classification methodology based on the distribution of their shape characteristics was developed in this study. This methodology offers several advantages over current methods used in practice. It is based on the distribution of shape characteristics rather than average indices of these characteristics. The coarse aggregate form is determined based on three-dimensional analysis of particles. The fundamental gradient and wavelet methods are used to quantify angularity and surface texture, respectively. The classification methodology can be used for the development of aggregate shape specifications.
Author : Maurizio Crispino
Publisher : CRC Press
ISBN 13 : 0429555253
Total Pages : 824 pages
Book Rating : 4.4/5 (295 download)
Download or read book Pavement and Asset Management written by Maurizio Crispino and published by CRC Press. This book was released on 2019-02-21 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pavement and Asset Management contains contributions from the World Conference on Pavement and Asset Management (WCPAM 2017, Baveno, Italy, 12-16 June 2017). For the first time, the European Pavement and Asset Management Conference (EPAM) and the International Conference on Managing Pavement Assets (ICMPA) were joining forces for a global event that aimed not only at academics and researchers, but also at practitioners, engineers and technicians dealing with everyday tasks and responsibilities related to transport infrastructures pavement and asset management. Pavement and Asset Management covers a wide range of topics, from emerging research to engineering practice, and is grouped under the following themes: - Data quality and monitoring - Economics, political and environmental management, strategies - Deterioration models - Key performance indicators - PMS-case studies - Design and materials - M&R treatments - LCA & LCCA - Risk and safety - Bridge and tunnel management - Smart infrastructure and IT Pavement and Asset Management will be valuable to academics and professionals interested and/or involved in issues related to transport infrastructures pavement and asset management.
Author : Andreas Loizos
Publisher : CRC Press
ISBN 13 : 1351585797
Total Pages : 364 pages
Book Rating : 4.3/5 (515 download)
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.
Author : F. Giligny
Publisher : Archaeopress Publishing Ltd
ISBN 13 : 1784911011
Total Pages : 664 pages
Book Rating : 4.7/5 (849 download)
Download or read book CAA2014: 21st Century Archaeology written by F. Giligny and published by Archaeopress Publishing Ltd. This book was released on 2015-03-31 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together a selection of papers proposed for the Proceedings of the 42nd Computer Applications and Quantitative Methods in Archaeology conference (CAA), hosted at Paris 1 Pantheon-Sorbonne University from 22nd to 25th April 2014.
Author : Dallas N. Little
Publisher : Springer
ISBN 13 : 331958443X
Total Pages : 702 pages
Book Rating : 4.3/5 (195 download)
Download or read book Modeling and Design of Flexible Pavements and Materials written by Dallas N. Little and published by Springer. This book was released on 2017-09-25 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook lays out the state of the art for modeling of asphalt concrete as the major structural component of flexible pavements. The text adopts a pedagogy in which a scientific approach, based on materials science and continuum mechanics, predicts the performance of any configuration of flexible roadways subjected to cyclic loadings. The authors incorporate state-of the-art computational mechanics to predict the evolution of material properties, stresses and strains, and roadway deterioration. Designed specifically for both students and practitioners, the book presents fundamentally complex concepts in a clear and concise way that aids the roadway design community to assimilate the tools for designing sustainable roadways using both traditional and innovative technologies.
Author : Frank Dellaert
Publisher : Springer
ISBN 13 : 3642340911
Total Pages : 452 pages
Book Rating : 4.6/5 (423 download)
Download or read book Outdoor and Large-Scale Real-World Scene Analysis written by Frank Dellaert and published by Springer. This book was released on 2012-09-22 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-proceedings of the 15th International Workshop on Theoretic Foundations of Computer Vision, held as a Dagstuhl Seminar in Dagstuhl Castle, Germany, in June/July 2011. The 19 revised full papers presented were carefully reviewed and selected after a blind peer-review process. The topic of this Workshop was Outdoor and Large-Scale Real-World Scene Analysis, which covers all aspects, applications and open problems regarding the performance or design of computer vision algorithms capable of working in outdoor setups and/or large-scale environments. Developing these methods is important for driver assistance, city modeling and reconstruction, virtual tourism, telepresence, and motion capture.
Author : A. T. Papagiannakis
Publisher : John Wiley & Sons
ISBN 13 : 1394150172
Total Pages : 660 pages
Book Rating : 4.3/5 (941 download)
Download or read book Pavement Design and Materials written by A. T. Papagiannakis and published by John Wiley & Sons. This book was released on 2024-07-18 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: PAVEMENT DESIGN AND MATERIALS Practical guide for all aspects of pavement engineering, updated with the latest techniques, standards, and software The newly revised and updated Second Edition of Pavement Design and Materials offers a comprehensive treatment of pavement materials, structural analysis, design, evaluation, and economic analysis of asphalt and portland concrete pavements. Written by two highly qualified engineering professors with a wealth of experience in the field, Pavement Design and Materials provides readers with: State-of-the-art techniques for material characterization, including a linear viscoelasticity primer Methods and software for the analysis of flexible and ridgid pavements including the AASHTOWare Pavement ME Design State-of-the-art pavement evaluation techniques including moduli backcalculation methods Pavement economic analysis techniques including the most up-to-date user cost relationships. The book companion website provides: Solved examples in each chapter and the electronic files associated with them An instructor solutions manual for the problems provided at the end of each chapter PowerPoint presentations by chapter to facilitate lecture delivery Pavement Design and Materials is an essential up-to-date textbook on the subject for upper-level undergraduate and graduate level courses on pavement materials and pavement design. It is also a valuable reference for practicing professional engineers involved in the various aspects of roadway pavement material selection and structural design.
Author :
Publisher : AASHTO
ISBN 13 : 1560514280
Total Pages : 87 pages
Book Rating : 4.5/5 (65 download)
Download or read book Guide for Pavement Friction written by and published by AASHTO. This book was released on 2008 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains guidelines and recommendations for managing and designing for friction on highway pavements. The contents of this report will be of interest to highway materials, construction, pavement management, safety, design, and research engineers, as well as others concerned with the friction and related surface characteristics of highway pavements.
Author : Zhanping You
Publisher : MDPI
ISBN 13 : 3038428892
Total Pages : 431 pages
Book Rating : 4.0/5 (384 download)
Download or read book Advanced Asphalt Materials and Paving Technologies written by Zhanping You and published by MDPI. This book was released on 2018-05-04 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Advanced Asphalt Materials and Paving Technologies" that was published in Applied Sciences
Author : Vincent C. Janoo
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (27 download)
Download or read book Quantification of Shape, Angularity, and Surface Texture of Base Course Materials written by Vincent C. Janoo and published by . This book was released on 1998 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 860 pages
Book Rating : 4.P/5 (25 download)
Download or read book Report written by and published by . This book was released on 2006 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 55 pages
Book Rating : 4.:/5 (212 download)
Download or read book Portable Image Analysis System for Characterizing Aggregate Morphology written by and published by . This book was released on 2008 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade, the application of image-based evaluation of particle shape, angularity and texture has been widely researched to characterize aggregate morphology. These efforts have been driven by the knowledge that the morphologic characteristics affect the properties and ultimate performance of aggregate mixtures in hot-mixed asphalt, hydraulic cement concrete and bound and unbound pavement layers, yet the lack of rapid, objective, and quantitative methods for assessment have inhibited their application in the engineering process. Developed systems for computer-based imaging and image analysis can cost up to $30-40,000 and are usually not portable to the field. However, recent advances in technology have produced pocket computers having as much processing power as was available in some desktop computers. This project takes advantage of these advances to develop an inexpensive portable image analysis system for characterizing aggregate morphology. The system was developed with an integral pocket computer-high resolution camera but can also use individual components consisting of a digital camera and lap- or desk-top computer. Digital images of aggregate particles are captured with the camera. These images are analyzed within the Matlab software program environment with a macro developed and written for this project that uses Fast Fourier Transform to characterize the particle morphology with respect to three parameters: shape, angularity and texture, based on the particle perimeter (outline or edge). By analyzing a number of particles from a source, it can be characterized with respect to these three parameters. Following development of the analysis program, 10 coarse aggregates from various Virginia sources were analyzed. Particles of each aggregate were randomly chosen so that each group contained the various shapes and textures representative of the source. Three images of each particle were obtained at distances of 2, 3, and 10 in to evaluate the resolution needed for adequate analysis. The reliability of the image processing was assessed by statistically analyzing the shape, angularity, and texture values to determine how the threshold parameter affects the particle edge acquisition. Asymptotic analysis was performed to determine the number of images needed to obtain a statistically stable value for each aggregate parameter. It was determined that images acquired at close range (2 or 3 in) were needed to provide sufficient resolution to adequately characterize the aggregate. It was also found that statistically valid values for aggregate shape, angularity, and texture can be obtained from fifteen particle images of random orientation. It can be concluded that the system can be successfully used to characterize coarse aggregate morphology. It is recommended that the Virginia Department of Transportation's Materials Division begin collecting images of aggregates used statewide and collaborate with the VTRC to perform the characterizations and build the database of aggregate morphologic characteristics. This information, coupled with performance testing of the materials, will provide the basis for incorporating the characterization parameters into specifications and guide material usage in the future.
Author : E. Tutumluer
Publisher :
ISBN 13 :
Total Pages : 262 pages
Book Rating : 4.:/5 (31 download)
Download or read book Investigation of Aggregate Shape Effects on Hot Mix Performance Using an Image Analysis Approach written by E. Tutumluer and published by . This book was released on 2004 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
