Variability Of Ignition Furnace Correction Factors

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Variability Of Ignition Furnace Correction Factors

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Author : Carolina Rodezno
language : en
Publisher:
Release Date : 2017

Variability Of Ignition Furnace Correction Factors written by Carolina Rodezno and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Asphalt categories.

"Determining the Asphalt Binder Content of Hot Mix Asphalt (HMA) by the Ignition Method," requires determination of asphalt and aggregate correction factors for asphalt mix designs for each ignition furnace used to test a design. In some cases, where there are numerous asphalt mix designs or numerous ignition furnaces testing a particular mix design, correction factors may be shared between ignition furnaces, though this practice is not strictly permitted by AASHTO T 308 without supporting evidence. The objectives of this research were to (1) determine the significant influences that affect the variability of asphalt and aggregate correction factors for ignition furnaces; (2) develop guidelines for the installation, operation, and maintenance of ignition furnaces to minimize the variability in correction factors between furnaces; and (3) develop and document a statistically valid correction factor verification procedure to identify and troubleshoot causes for non-comparing, statistically different, or biased results of AASHTO T 308. The research was conducted in three parts: (1) a study of the sensitivity of asphalt and aggregate correction factors to variation in experimental factors such as furnace type, test temperature, asphalt content, and sample mass; (2) a round-robin study to identify correction factor outliers and determine the contributory cause(s); and (3) troubleshooting of outliers from the round-robin study. The research found that the primary factors affecting asphalt and aggregate correction factors determined by AASHTO T 308 are furnace type and test temperature. Conducting the test at 800°F appears to substantially reduce the magnitude and standard deviation of the correction factors for asphalt mixtures that do not contain lime. Sharing correction factors among different ignition furnaces appears acceptable for low correction factor aggregates (0.1% or less) but is problematic for aggregates with correction factors of 1.0% or greater. The current precision estimates in AASHTO T 308 appear applicable only to mixtures with low correction factor aggregates. The key product of this research is a Proposed Standard Practice for Installation, Operation, and Maintenance of Ignition Furnaces (Appendix I). Development of a verification procedure to identify causes for non-comparing, statistically different, or biased test results from ignition furnaces was found to be premature and further research is planned.

Transportation Research Record

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Author :
language : en
Publisher:
Release Date : 2003

Transportation Research Record written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Roads categories.

Construction 2000

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Author :
language : en
Publisher:
Release Date : 2000

Construction 2000 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Asphalt concrete categories.

Improved Mix Design Evaluation And Materials Management Practices For Hot Mix Asphalt With High Reclaimed Asphalt Pavement Content

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Author : Randy Clark West
language : en
Publisher: Transportation Research Board
Release Date : 2013

Improved Mix Design Evaluation And Materials Management Practices For Hot Mix Asphalt With High Reclaimed Asphalt Pavement Content written by Randy Clark West and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Pavements, Asphalt categories.

TRB's National Cooperative Highway Research Program (NCHRP) Report 752: Improved Mix Design, Evaluation, and Materials Management Practices for Hot Mix Asphalt with High Reclaimed Asphalt Pavement Content describes proposed revisions to the American Association of State Highway and Transportation Officials (AASHTO) R 35, Superpave Volumetric Design for Hot Mix Asphalt, and AASHTO M 323, Superpave Volumetric Mix Design, to accommodate the design of asphalt mixtures with high reclaimed asphalt pavement contents.

New Developments In Soil Characterization And Soil Stability

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Author : Wissem Frikha
language : en
Publisher: Springer
Release Date : 2018-07-18

New Developments In Soil Characterization And Soil Stability written by Wissem Frikha and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-18 with Science categories.

This book presents new studies dealing with the attempts made by the scientists and practitioners to address contemporary issues in geotechnical engineering such as characterization of soil, geomaterials, soil stability and some other geomechanics issues that are becoming quite relevant in today's world. Papers were selected from the 5th GeoChina International Conference on Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, held on July 23-25, 2018 in HangZhou, China.

Performance Of Bituminous And Hydraulic Materials In Pavements

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Author : S.F. Brown
language : en
Publisher: Routledge
Release Date : 2017-10-02

Performance Of Bituminous And Hydraulic Materials In Pavements written by S.F. Brown and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-02 with Technology & Engineering categories.

This volume contains contributions from international experts, reflecting the rapid advances in the design of new improved bitumen and hydraulic bound composites, the trends in the use of waste and recycled materials and up-to-date methods of testing and evaluation.

Determining Asphalt Content For Recycled Asphalt Pavement Rap Materials

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Author : Gary Thompson
language : en
Publisher:
Release Date : 2003

Determining Asphalt Content For Recycled Asphalt Pavement Rap Materials written by Gary Thompson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Asphalt concrete categories.

South African Journal Of Plant And Soil

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Author :
language : en
Publisher:
Release Date : 2002

South African Journal Of Plant And Soil written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Botany categories.

Asme Technical Papers

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Author :
language : en
Publisher:
Release Date :

Asme Technical Papers written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Mechanical engineering categories.

Handbook Of Archaeological Sciences

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Author : A. Mark Pollard
language : en
Publisher: John Wiley & Sons
Release Date : 2023-02-09

Handbook Of Archaeological Sciences written by A. Mark Pollard and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-02-09 with Technology & Engineering categories.

HANDBOOK OF ARCHAEOLOGICAL SCIENCES A modern and comprehensive introduction to methods and techniques in archaeology In the newly revised Second Edition of the Handbook of Archaeological Sciences, a team of more than 100 researchers delivers a comprehensive and accessible overview of modern methods used in the archaeological sciences. The book covers all relevant approaches to obtaining and analyzing archaeological data, including dating methods, quaternary paleoenvironments, human bioarchaeology, biomolecular archaeology and archaeogenetics, resource exploitation, archaeological prospection, and assessing the decay and conservation of specimens. Overview chapters introduce readers to the relevance of each area, followed by contributions from leading experts that provide detailed technical knowledge and application examples. Readers will also find: A thorough introduction to human bioarchaeology, including hominin evolution and paleopathology The use of biomolecular analysis to characterize past environments Novel approaches to the analysis of archaeological materials that shed new light on early human lifestyles and societies In-depth explorations of the statistical and computational methods relevant to archaeology Perfect for graduate and advanced undergraduate students of archaeology, the Handbook of Archaeological Sciences will also earn a prominent place in the libraries of researchers and professionals with an interest in the geological, biological, and genetic basis of archaeological studies.