Measurements Of Surface Energy And Its Relationship To Moisture Damage

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Measurements of Surface Energy and Its Relationship to Moisture Damage

Author :
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.3/5 (555 download)

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Book Synopsis Measurements of Surface Energy and Its Relationship to Moisture Damage by :

Download or read book Measurements of Surface Energy and Its Relationship to Moisture Damage written by and published by . This book was released on 2005 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Moisture damage in asphalt mixes can be defined as loss of strength and durability due to the presence of moisture at the binder-aggregate interface (adhesive failure) or within the binder (cohesive failure). This research focuses on the evaluation of the susceptibility of aggregates and asphalts to moisture damage through understanding the micro-mechanisms that influence adhesive bond between aggregates and asphalt and the cohesive strength and durability of the binder. Moisture damage susceptibility is assessed using surface energy measurements and Dynamic Mechanical Analysis (DMA). Surface energy is defined as the energy needed to create a new unit surface area of material in vacuum condition. Surface energy measurements are used to compute the adhesive bond strength between the aggregates and asphalt and cohesive bond strength in the binder. DMA testing evaluates the rate of damage accumulation in asphalt binders and mastics. The DMA apparatus applies a cyclic, torsional strain-controlled loading to cylindrical asphalt mastics until failure. DMA results are analyzed using continuum damage mechanics that focus on separating the energy expended in damaging the material from that associated with viscoelastic deformation. This report presents a new approach developed to analyze DMA results and calculate the rate of damage. The developed approach is used to evaluate six asphalt mixtures that have performed either well or poorly in the field. The resistance of the field mixes to moisture damage is shown to be related to the calculations of bind energies and the accumulated damage in DMA.

Application of Surface Energy Measurements to Evaluate Moisture Susceptibility of Asphalt and Aggregates

Author : Corey James Zollinger
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (622 download)

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Book Synopsis Application of Surface Energy Measurements to Evaluate Moisture Susceptibility of Asphalt and Aggregates by : Corey James Zollinger

Download or read book Application of Surface Energy Measurements to Evaluate Moisture Susceptibility of Asphalt and Aggregates written by Corey James Zollinger and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Moisture damage in asphalt mixes can be defined as loss of strength and durability due to the presence of moisture at the binder-aggregate interface (adhesive failure) or within the binder (cohesive failure). This research focuses on the evaluation of the susceptibility of aggregates and asphalts to moisture damage through understanding the micro-mechanisms that influence the adhesive bond between aggregates and asphalt and the cohesive strength and durability of the binder. Moisture damage susceptibility is assessed using surface energy measurements and dynamic mechanical analysis (DMA). Surface energy is defined as the energy needed to create a new unit surface area of material in vacuum condition. Surface energy measurements are used to compute the adhesive bond strength between the aggregates and asphalt and cohesive bond strength in the binder. DMA testing is used to evaluate the rate of damage accumulation in asphalt binders and mastics. The DMA applies a cyclic, torsional strain controlled loading to cylindrical asphalt mastics until failure. The DMA results are analyzed using continuum damage mechanics that focuses on separating the energy expended in damaging the material from that associated with viscoelastic deformation. A new approach is developed to analyze the DMA results and calculate the rate of damage. The developed approach is used to evaluate six asphalt mixtures which have performed either well or poorly in the field. The resistance of the field mixes to moisture damage is shown to be related to the calculations of bind energies and the accumulated damage in the DMA.

Electrical Measuring Instruments and Measurements

Author : S.C. Bhargava
Publisher : CRC Press
ISBN 13 : 0415621356
Total Pages : 218 pages
Book Rating : 4.4/5 (156 download)

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Book Synopsis Electrical Measuring Instruments and Measurements by : S.C. Bhargava

Download or read book Electrical Measuring Instruments and Measurements written by S.C. Bhargava and published by CRC Press. This book was released on 2012-12-27 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, written for the benefit of engineering students and practicing engineers alike, is the culmination of the author's four decades of experience related to the subject of electrical measurements, comprising nearly 30 years of experimental research and more than 15 years of teaching at several engineering institutions. The unique feature of this book, apart from covering the syllabi of various universities, is the style of presentation of all important aspects and features of electrical measurements, with neatly and clearly drawn figures, diagrams and colour and b/w photos that illustrate details of instruments among other things, making the text easy to follow and comprehend. Enhancing the chapters are interspersed explanatory comments and, where necessary, footnotes to help better understanding of the chapter contents. Also, each chapter begins with a "recall" to link the subject matter with the related science or phenomenon and fundamental background. The first few chapters of the book comprise "Units, Dimensions and Standards"; "Electricity, Magnetism and Electromagnetism" and "Network Analysis". These topics form the basics of electrical measurements and provide a better understanding of the main topics discussed in later chapters. The last two chapters represent valuable assets of the book, and relate to (a) "Magnetic Measurements", describing many unique features not easily available elsewhere, a good study of which is essential for the design and development of most electric equipment – from motors to transformers and alternators, and (b) "Measurement of Non-electrical Quantities", dealing extensively with the measuring techniques of a number of variables that constitute an important requirement of engineering measurement practices. The book is supplemented by ten appendices covering various aspects dealing with the art and science of electrical measurement and of relevance to some of the topics in main chapters. Other useful features of the book include an elaborate chapter-by-chapter list of symbols, worked examples, exercises and quiz questions at the end of each chapter, and extensive authors' and subject index. This book will be of interest to all students taking courses in electrical measurements as a part of a B.Tech. in electrical engineering. Professionals in the field of electrical engineering will also find the book of use.

Advanced Asphalt Materials and Paving Technologies

Author : Zhanping You
Publisher : MDPI
ISBN 13 : 3038428892
Total Pages : 431 pages
Book Rating : 4.0/5 (384 download)

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Book Synopsis Advanced Asphalt Materials and Paving Technologies by : Zhanping You

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

Proceedings of the RILEM International Symposium on Bituminous Materials

Author : Hervé Di Benedetto
Publisher : Springer Nature
ISBN 13 : 3030464555
Total Pages : 1806 pages
Book Rating : 4.0/5 (34 download)

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Book Synopsis Proceedings of the RILEM International Symposium on Bituminous Materials by : Hervé Di Benedetto

Download or read book Proceedings of the RILEM International Symposium on Bituminous Materials written by Hervé Di Benedetto and published by Springer Nature. This book was released on 2021-09-25 with total page 1806 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume highlights the latest advances, innovations, and applications in bituminous materials and structures and asphalt pavement technology, as presented by leading international researchers and engineers at the RILEM International Symposium on Bituminous Materials (ISBM), held in Lyon, France on December 14-16, 2020. The symposium represents a joint effort of three RILEM Technical Committees from Cluster F: 264-RAP “Asphalt Pavement Recycling”, 272-PIM “Phase and Interphase Behaviour of Bituminous Materials”, and 278-CHA “Crack-Healing of Asphalt Pavement Materials”. It covers a diverse range of topics concerning bituminous materials (bitumen, mastics, mixtures) and road, railway and airport pavement structures, including: recycling, phase and interphase behaviour, cracking and healing, modification and innovative materials, durability and environmental aspects, testing and modelling, multi-scale properties, surface characteristics, structure performance, modelling and design, non-destructive testing, back-analysis, and Life Cycle Assessment. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster new multidisciplinary collaborations.

Test Method to Determine Aggregate/asphalt Adhesion Properties and Potential Moisture Damage

Author : Andrew Hanz
Publisher :
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Test Method to Determine Aggregate/asphalt Adhesion Properties and Potential Moisture Damage by : Andrew Hanz

Download or read book Test Method to Determine Aggregate/asphalt Adhesion Properties and Potential Moisture Damage written by Andrew Hanz and published by . This book was released on 2007 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Kinzoku kankei gaku kyokai tohoku shibu rengo shinpojiumu // Tohoku shibu.Kinzoku kankei gaku kyokai ; 18

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (258 download)

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Book Synopsis Kinzoku kankei gaku kyokai tohoku shibu rengo shinpojiumu // Tohoku shibu.*Kinzoku kankei gaku kyokai* ; 18 by :

Download or read book Kinzoku kankei gaku kyokai tohoku shibu rengo shinpojiumu // Tohoku shibu.*Kinzoku kankei gaku kyokai* ; 18 written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advances in Asphalt Materials

Author : Shin-Che Huang
Publisher : Woodhead Publishing
ISBN 13 : 0081002718
Total Pages : 493 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Advances in Asphalt Materials by : Shin-Che Huang

Download or read book Advances in Asphalt Materials written by Shin-Che Huang and published by Woodhead Publishing. This book was released on 2015-04-08 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Analytical Methods in Petroleum Upstream Applications

Author : Cesar Ovalles
Publisher : CRC Press
ISBN 13 : 1138001481
Total Pages : 2054 pages
Book Rating : 4.1/5 (38 download)

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Book Synopsis Analytical Methods in Petroleum Upstream Applications by : Cesar Ovalles

Download or read book Analytical Methods in Petroleum Upstream Applications written by Cesar Ovalles and published by CRC Press. This book was released on 2015-04-02 with total page 2054 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effective measurement of the composition and properties of petroleum is essential for its exploration, production, and refining; however, new technologies and methodologies are not adequately documented in much of the current literature. Analytical Methods in Petroleum Upstream Applications explores advances in the analytical methods and instrumentation that allow more accurate determination of the components, classes of compounds, properties, and features of petroleum and its fractions. Recognized experts explore a host of topics, including: A petroleum molecular composition continuity model as a context for other analytical measurements A modern modular sampling system for use in the lab or the process area to collect and control samples for subsequent analysis The importance of oil-in-water measurements and monitoring The chemical and physical properties of heavy oils, their fractions, and products from their upgrading Analytical measurements using gas chromatography and nuclear magnetic resonance (NMR) applications Asphaltene and heavy ends analysis Chemometrics and modeling approaches for understanding petroleum composition and properties to improve upstream, midstream, and downstream operations Due to the renaissance of gas and oil production in North America, interest has grown in analytical methods for a wide range of applications. The understanding provided in this text is designed to help chemists, geologists, and chemical and petroleum engineers make more accurate estimates of the crude value to specific refinery configurations, providing insight into optimum development and extraction schemes.

Surface tension and surface energy and their influence on chemical phenomena

Author : Richard Smith Willows
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Surface tension and surface energy and their influence on chemical phenomena by : Richard Smith Willows

Download or read book Surface tension and surface energy and their influence on chemical phenomena written by Richard Smith Willows and published by . This book was released on 1915 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Surface Tension and Surface Energy and Their Influence on Chemical Phenomena

Author : Richard Smith Willows
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Surface Tension and Surface Energy and Their Influence on Chemical Phenomena by : Richard Smith Willows

Download or read book Surface Tension and Surface Energy and Their Influence on Chemical Phenomena written by Richard Smith Willows and published by . This book was released on 1919 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Comprehensive Study of Surface Energy

Author : Grace Young
Publisher : States Academic Press
ISBN 13 : 9781639890033
Total Pages : 247 pages
Book Rating : 4.8/5 (9 download)

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Book Synopsis A Comprehensive Study of Surface Energy by : Grace Young

Download or read book A Comprehensive Study of Surface Energy written by Grace Young and published by States Academic Press. This book was released on 2021-11-16 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface energy represents the excess energy that is present at the surface of a material as compared to the whole material. When a solid body is cut into two pieces, its bonds get disrupted and the surface area increases. As a result, the surface energy also increases. Surface energy can be determined by measuring it with contact angle experiments. In this method, the contact angle of liquids, such as water and diiodomethane, is measured with the surface and surface energy is calculated on the basis of surface tension and contact angle. Surface energy can also be determined by calculating the surface energy of a deformed solid and by calculating the surface formation energy of a crystalline solid. This book covers in detail some existent theories and innovative concepts revolving around surface energy. It is an upcoming field of science that has undergone rapid development over the past few decades. For someone with an interest and eye for detail, this book covers the most significant topics in the field of surface energy.

Effects of Air Void Size Distribution, Pore Pressure, and Bond Energy on Moisture Damage

Author : E. Masad
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Effects of Air Void Size Distribution, Pore Pressure, and Bond Energy on Moisture Damage by : E. Masad

Download or read book Effects of Air Void Size Distribution, Pore Pressure, and Bond Energy on Moisture Damage written by E. Masad and published by . This book was released on 2006 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The relationship between hot mix asphalt moisture damage, air void structure, pore pressure, and cohesive and adhesive bond energies was investigated in this study using mixes with two different aggregate types (limestone and granite). Each of the mixes was designed with varying gradations to obtain different air void distributions among specimens. Moisture damage was evaluated using parameters derived based on the principles of fracture mechanics. Air void distribution was analyzed using a probabilistic approach with the assistance of X-ray computed tomography and image analysis techniques. The cohesive and adhesive bond energies of the mix were calculated using experimental measurements of aggregate and asphalt surface energies. Permeability, which controls the ability of the water to infiltrate into and drain out of the mix, was expressed as a function of statistical parameters of the air void distribution. Ranges of air void distributions and permeability were identified for each of the limestone and granite mixes at which moisture damage was maximum. The difference in moisture damage between the granite and limestone mixes was explained based on air void distribution and cohesive and adhesive bond energies.

Modeling and Design of Flexible Pavements and Materials

Author : Dallas N. Little
Publisher : Springer
ISBN 13 : 331958443X
Total Pages : 702 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Modeling and Design of Flexible Pavements and Materials by : Dallas N. Little

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.

Asphalt Materials Science and Technology

Author : James G. Speight
Publisher : Butterworth-Heinemann
ISBN 13 : 0128005017
Total Pages : 652 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Asphalt Materials Science and Technology by : James G. Speight

Download or read book Asphalt Materials Science and Technology written by James G. Speight and published by Butterworth-Heinemann. This book was released on 2015-10-01 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt is a complex but popular civil engineering material. Design engineers must understand these complexities in order to optimize its use. Whether or not it is used to pave a busy highway, waterproof a rooftop or smooth out an airport runway, Asphalt Materials Science and Technology acquaints engineers with the issues and technologies surrounding the proper selection and uses of asphalts. With this book in hand, researchers and engineering will find a valuable guide to the production, use and environmental aspect of asphalt. Covers the Nomenclature and Terminology for Asphalt including: Performance Graded (PG) Binders, Asphalt Cement (AC), Asphalt-Rubber (A-R) Binder, Asphalt Emulsion and Cutback Asphalt Includes Material Selection Considerations, Testing, and applications Biodegradation of Asphalt and environmental aspects of asphalt use

Measurement of Surface Tension

Author : Noah Ernest Dorsey
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Measurement of Surface Tension by : Noah Ernest Dorsey

Download or read book Measurement of Surface Tension written by Noah Ernest Dorsey and published by . This book was released on 1926 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Development of a Database for Surface Energy of Aggregates and Asphalt Binders

Author :
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (439 download)

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Book Synopsis Development of a Database for Surface Energy of Aggregates and Asphalt Binders by :

Download or read book Development of a Database for Surface Energy of Aggregates and Asphalt Binders written by and published by . This book was released on 2009 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: TxDOT project 0-4524 evaluated the influence of surface energy of aggregates and binders on the resistance of asphalt mixtures to moisture damage. The results from this research lead to the development of a threetier approach to assess the moisture damage resistance of asphalt mixtures. This approach is based on testing and evaluating the physical and/or mechanical properties of the constituent materials, the fine aggregate mixture, and full asphalt mixture. In the first tier, an energy-based parameter termed the energy ratio (ER) is calculated using the surface energy measurements. This parameter is used as a screening tool to select binders and aggregates that have good resistance to moisture damage. The second and third tiers rely on measuring the mechanical properties of the fine aggregate mixture and full asphalt mixture, respectively. This report documents the results of an implementation project of the testing methods and analysis approaches of the 0-4524 project. This implementation project included (a) providing training on the developed experimental and analysis methods, (b) conducting measurements of the surface energy of binders, additives, and aggregates, and (c) developing a database of surface energy measurements. This database will be useful as a diagnostic tool for finding the cause of poor moisture damage resistance in mixes and to suggest remedies through modification with anti-strip agents, lime, polymers, other additives, or through a change of materials in extreme cases.