Isolated Or Coupled Oxidative Moisture And Freeze Thaw Effects On Warm Mix Asphalt
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Isolated Or Coupled Oxidative Moisture And Freeze Thaw Effects On Warm Mix Asphalt
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Author : Carl Pittman
language : en
Publisher:
Release Date : 2018
Isolated Or Coupled Oxidative Moisture And Freeze Thaw Effects On Warm Mix Asphalt written by Carl Pittman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
This thesis aims to contribute to the growing body of warm mix asphalt (WMA) research by evaluating the differences in behavioral properties of three WMA mixtures, representing the three warm mix technology (WMT) categories (foaming, chemical additives, and organic waxes), relative to a control hot mix asphalt (HMA) in a specific set of conditions which is not well documented in literature. These conditions are: plant produced mixtures with all virgin aggregates and binder (i.e. no recycled materials) and no additives other than the warm mix technology. These mixtures were evaluated at low, intermediate, and high testing temperatures before and after a set of conditioning protocols (CPs), which utilized varying levels of isolated and combined oxidative, moisture, and freeze-thaw damage. A key feature of this thesis is that damage induced by these CPs has been benchmarked relative to measured field aging effects through studies which evaluated the three WMA mixtures and one HMA mixture used to obtain the results presented here, along with additional mixtures not considered in this thesis.
Isolated Or Coupled Oxidative Moisture And Freeze Thaw Effects On Warm Mix Asphalt
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Author :
language : en
Publisher:
Release Date : 2018
Isolated Or Coupled Oxidative Moisture And Freeze Thaw Effects On Warm Mix Asphalt written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
This thesis aims to contribute to the growing body of warm mix asphalt (WMA) research by evaluating the differences in behavioral properties of three WMA mixtures, representing the three warm mix technology (WMT) categories (foaming, chemical additives, and organic waxes), relative to a control hot mix asphalt (HMA) in a specific set of conditions which is not well documented in literature. These conditions are: plant produced mixtures with all virgin aggregates and binder (i.e. no recycled materials) and no additives other than the warm mix technology. These mixtures were evaluated at low, intermediate, and high testing temperatures before and after a set of conditioning protocols (CPs), which utilized varying levels of isolated and combined oxidative, moisture, and freeze-thaw damage. A key feature of this thesis is that damage induced by these CPs has been benchmarked relative to measured field aging effects through studies which evaluated the three WMA mixtures and one HMA mixture used to obtain the results presented here, along with additional mixtures not considered in this thesis.
Capturing Individual Or Combined Environmental Effects From Longer Term Field Aging Of Asphalt Mixtures
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Author : Rabeea Waheed Bazuhair
language : en
Publisher:
Release Date : 2019
Capturing Individual Or Combined Environmental Effects From Longer Term Field Aging Of Asphalt Mixtures written by Rabeea Waheed Bazuhair and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Nowadays, asphalt mixtures can be complex and have many ingredients to meet economic, performance, and/or environmental requirements. Economic and environmental factors have been driving performance in the positive direction for rutting, but the negative direction for brittleness, cracking, and overall durability. Recent research has also shown that two of the national standards to assess aging or effects of environmental factors (AASHTO T283 and R30) do not always simulate the amount of aging or behaviors mentioned in the documents. Also, these methods generally view one environmental effect at a time, and do not consider simultaneous environmental effects on aging (e.g. oxidation, moisture, freeze-thaw effects). However, pavements are exposed to combined environmental effects. As such, there is a lack of understanding of the combined environmental effects on asphalt pavement, and improve methods are needed for laboratory settings, resulting in less than optimal design and materials selection protocols. This dissertation focuses on investigating combined environmental effects of oxidation, moisture, and freeze-thaw. The dissertation includes four years of field aging of plant mixed asphalt mixtures containing no recycled materials and three different warm mix technologies that were also exposed to eight laboratory conditioning protocols including individual and combined environmental effects of oxidation, moisture and freeze-thaw to investigate mixture properties measured at high, intermediate, and low temperatures with several mixture tests that were complimented with tests on recovered binder. Major findings are summarized below: • Cantabro mass loss captured individual and combined effects damage in laboratory and field conditions better than other mixture testing utilized herein and was recommended for mixture assessment. • Laboratory conditioning protocols with combined effects were the only ones able to consistently represent four or more years of field aging in the Mississippi climate. • Field aging of laboratory compacted specimens in PVC sleeves did not fully represent field aging of field placed pavement. Temperature and moisture conditions varied between the two cases. • Use of Cantabro mass loss and laboratory conditioning consisting of hot air, hot water, and freeze-thaw conditions was shown to provide combined effects improvements relative to at least some typical practices. Guidance was provided on how to use these tools to assess combined effects.
Modeling And Design Of Flexible Pavements And Materials
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Author : Dallas N. Little
language : en
Publisher: Springer
Release Date : 2017-09-25
Modeling And Design Of Flexible Pavements And Materials written by Dallas N. Little and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-25 with Technology & Engineering categories.
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.
Impact Of Airport Pavement Deicing Products On Aircraft And Airfield Infrastructure
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Author : Xianming Shi
language : en
Publisher: Transportation Research Board
Release Date : 2008
Impact Of Airport Pavement Deicing Products On Aircraft And Airfield Infrastructure written by Xianming Shi 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 2008 with Deicing chemicals categories.
"TRB's Airport Cooperative Research Program (ACRP) Synthesis 6: Impact of Airport Pavement Deicing Products on Aircraft and Airfield Infrastructure explores how airports chemically treat their airport pavements to mitigate snow and ice, and the chemicals used. The report also examines the effects of pavement deicing products on aircraft and airfield infrastructure, and highlights knowledge gaps in the subject"--Publisher's description.
Advances In Asphalt Materials
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Author : Shin-Che Huang
language : en
Publisher: Woodhead Publishing
Release Date : 2015-04-08
Advances In Asphalt Materials written by Shin-Che Huang and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-04-08 with Technology & Engineering categories.
The urgent need for infrastructure rehabilitation and maintenance has led to a rise in the levels of research into bituminous materials. Breakthroughs in sustainable and environmentally friendly bituminous materials are certain to have a significant impact on national economies and energy sustainability. This book will provide a comprehensive review on recent advances in research and technological developments in bituminous materials. Opening with an introductory chapter on asphalt materials and a section on the perspective of bituminous binder specifications, Part One covers the physiochemical characterisation and analysis of asphalt materials. Part Two reviews the range of distress (damage) mechanisms in asphalt materials, with chapters covering cracking, deformation, fatigue cracking and healing of asphalt mixtures, as well as moisture damage and the multiscale oxidative aging modelling approach for asphalt concrete. The final section of this book investigates alternative asphalt materials. Chapters within this section review such aspects as alternative binders for asphalt pavements such as bio binders and RAP, paving with asphalt emulsions and aggregate grading optimization. Provides an insight into advances and techniques for bituminous materials Comprehensively reviews the physicochemical characteristics of bituminous materials Investigate asphalt materials on the nano-scale, including how RAP/RAS materials can be recycled and how asphalt materials can self-heal and rejuvenator selection
The Adsorption Of Gases And Vapors
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Author : Stephen Brunauer
language : en
Publisher:
Release Date : 1943
The Adsorption Of Gases And Vapors written by Stephen Brunauer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1943 with Gases categories.
Backpacker
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Author :
language : en
Publisher:
Release Date : 2007-09
Backpacker written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-09 with categories.
Backpacker brings the outdoors straight to the reader's doorstep, inspiring and enabling them to go more places and enjoy nature more often. The authority on active adventure, Backpacker is the world's first GPS-enabled magazine, and the only magazine whose editors personally test the hiking trails, camping gear, and survival tips they publish. Backpacker's Editors' Choice Awards, an industry honor recognizing design, feature and product innovation, has become the gold standard against which all other outdoor-industry awards are measured.
Cumulated Index Medicus
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Author :
language : en
Publisher:
Release Date : 2000
Cumulated Index Medicus 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 Medicine categories.
Cellulose And Cellulose Derivatives In The Food Industry
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Author : Tanja Wuestenberg
language : en
Publisher: John Wiley & Sons
Release Date : 2014-07-28
Cellulose And Cellulose Derivatives In The Food Industry written by Tanja Wuestenberg 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 2014-07-28 with Science categories.
Cellulose and its derivatives can be found in many forms in nature and is a valuable material for all manner of applications in industry. This book is authored by an expert with many years of experience as an application engineer at renowned cellulose processing companies in the food industry. All the conventional and latest knowledge available on cellulose and its derivatives is presented. The necessary details are elucidated from a theoretical and practical viewpoint, while retaining the focus on food applications. This book is an essential source of information and includes recommendations and instructions of a general nature to assist readers in the exploration of possible applications of cellulose and its derivatives, as well as providing food for thought for the generation of new ideas for product development. Topics include gelling and rheological properties, synergistic effects with other hydrocolloids, as well as nutritional and legal aspects. The resulting compilation covers all the information and advice needed for the successful development, implementation, and handling of cellulose-containing products.