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Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (175 download)
Download or read book Asphalt Cement Chemical Characterization and Performance Related Properties written by and published by . This book was released on 1988 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Guillermo Thenoux
Publisher :
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.:/5 (168 download)
Download or read book Chemical Characterization of Asphalt Cements Using Chromatographic Techniques written by Guillermo Thenoux and published by . This book was released on 1987 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents the findings of a literature review and information regarding selection, implementation and development of a chemical composition procedure for asphalt cements. The chemical composition analysis selected was the Corbett-Swarbrick procedure standarized as ASTM D4124. The procedure is a selective adsorption / desorption (solid / liquid) chromatography which separates asphalts in four distinct generic fractions. During the implementation of the Corbett-Swarbrick method, a number of refinements were made to improve its efficiency. These are presented in a comprehensive user manual as an appendix of this dissertation. The chemical procedure selected in conjunction with other rheological measurements of asphalt was used in a comprehensive study to characterize asphalt pavement material properties. Eight highway projects located throughout the State of Oregon were included in the present research. The highway projects were chosen to represent a wide variety of environmental and traffic conditions. Asphalt fractional composition was statistically related to asphalt theological properties and asphalt temperature susceptibility. Asphalt material properties were also included in the selection of prediction models and related to pavement performance. Fractional composition was also used for the evaluation of four different asphalt extraction / recovery procedures and the evaluation of a pressure oxygen bomb device, used for asphalt laboratory aging. The major findings of the research were: Fractional compositional analysis of asphalt showed that recovered asphalt may not represent the same characteristics of the actual asphalt present in the mix. Some rheological properties of asphalt showed good correlation to asphalt composition in the higher temperature range. At lower temperature, however, relationships were more scattered. Different temperature susceptibility parameters have different relationships with chemical fractional composition, and, do not correlate with each other. Different extraction / recovery procedures yield different chemical fractional composition for the same asphalt. Pavement performance statistically relates to groups of asphalt properties and asphalt mix properties.
Author : Peterson
Publisher : Strategic Highway Research Program (Shrp)
ISBN 13 :
Total Pages : 176 pages
Book Rating : 4.E/5 ( download)
Download or read book Binder Characterization and Evaluation written by Peterson and published by Strategic Highway Research Program (Shrp). This book was released on 1994 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final report, in four volumes, of Strategic Highway Research Program (SHRP) Project A-002A describes intensive investigations of the chemical and physical properties of petroleum asphalts used in the construction of highway pavements. The model and predictive capability constitute the major portion of volume 1.
Author :
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.E/5 ( download)
Download or read book Binder Characterization and Evaluation: Test methods written by and published by . This book was released on 1994 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : KM. Chua
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (125 download)
Download or read book Comprehensive Characterization of Performance-Related Properties of Asphalt Concrete Mixtures Through Dynamic Testing written by KM. Chua and published by . This book was released on 1995 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is often desirable to be able to obtain a comprehensive characterization of the performance-related properties of asphalt concrete with as few tests as possible. The New Mexico State Highway and Transportation Department is interested in obtaining a comprehensive characterization of the performance-related properties of the four types of asphalt concrete mixtures that are commonly used in the state. These properties include: the strength, the resilient modulus, the rutting characteristics, and the fatigue/cracking characteristics. Typically, different tests are needed to determine these characteristics. However, the approach taken here to obtain the desired information is through dynamic testing with large (15 cm diameter x 30 cm high) cylindrical asphalt concrete specimens at four different load levels, frequencies, and temperatures. The load applied were 1112 N, 2224 N, 4448 N, and 8896 N; at frequencies of 1 Hz, 4 Hz, 8 Hz, and 16 Hz. Test temperatures were 4.4°C, 25°C, 37.8°C, and 60°C. Continuous haversine load cycles were applied for each test set and the response to the repeated loadings were recorded. Resilient modulus histories were obtained. Rutting characteristics of the material at different temperatures were obtained from the residual deformation histories. The thermal viscoelastic properties were determined from the deformation response at the different temperatures. The change in the damping characteristics with repeated loading were determined through analysis of the data in the frequency domain. Since damping properties can be related to the embrittlement and aging characteristics of materials, the fatigue properties were also inferred. Additionally, it is shown that the degree of susceptibility of the asphalt concrete to cracking and reflection cracking can also be estimated.
Author : William Howard Daly
Publisher :
ISBN 13 :
Total Pages : 107 pages
Book Rating : 4.:/5 (111 download)
Download or read book Chemical Characterization of Asphalts Related to Their Performance written by William Howard Daly and published by . This book was released on 2019 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this project the researchers studied a correlation between molecular structure and corresponding compositional analysis of asphalt binders of conventional hot mix asphalt mixtures (HMA) as well as mixtures containing reclaimed asphalt pavement (RAP) and/or recycled asphalt shingles (RAS) with their cracking potential at intermediate temperature. The molecular size and structure of asphalt components of RAP and RAS undergo large changes during their exposure to environmental factors, which affects the physical properties imparted to their mixtures with conventional asphalt liquids. The composition of the mixtures prepared using a PG 70-22M binder was ascertained using thin layer chromatograpy/FID detection (Iatroscan), gel permeation chromatography (GPC) and Fourier transform infrared spectroscopy (FTIR). The distribution of species by molecular mass as determined by deconvoluting gel permeation chromatographs, emphasizing in particular, the amount of asphaltenes as they are related to the age hardening of asphalt materials. The extent of sample aging is apparent from the carbonyl oxygen content from FTIR measurements of the mixtures. Fracture resistance of laboratory produced mixtures was assessed using the Semi Circular Bend Test (SCB) test procedure; a minimal value of 0.5 kJ/m2 was considered acceptable. Mixtures containing up to 5% RAS, 15% RAP and 15% RAP/5% RAS met the SCB standard. Molecular fractionation through GPC of mixtures containing RAS confirmed the presence of highly associated asphaltenes in greater concentrations than mixtures containing recycled asphalt pavement (RAP). High concentrations of high molecular weight associated asphaltenes (mol wt > 20K Daltons) which are present in RAS samples decrease the fracture resistance of the asphalt mixtures. The use of recycling agents, Cyclogen-L, Hydrogreen, Asphalt Flux and Re-refined engine oil bottoms (REOB), did not reduce the concentration of the highly associated asphaltenes, further they failed to improve the cracking resistance of the asphalt mixtures evaluated in this study. However, the recycling agents effected quantitative extraction of the RAS asphalt component.
Author : Xianming Shi
Publisher : John Wiley & Sons
ISBN 13 : 1119185068
Total Pages : 476 pages
Book Rating : 4.1/5 (191 download)
Download or read book Sustainable Winter Road Operations written by Xianming Shi and published by John Wiley & Sons. This book was released on 2018-08-27 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first and only comprehensive guide to best practices in winter road operations Winter maintenance operations are essential to ensure the safety, mobility, and productivity of transportation systems, especially in cold-weather climates, and responsible agencies are continually challenged to provide a high level of service in a fiscally and environmentally responsible manner. Sustainable Winter Road Operations bridges the knowledge gaps, providing the first up-to-date, authoritative, single-source overview and guide to best practices in winter road operations that considers the triple bottom line of sustainability. With contributions from experts in the field from around the world, this book takes a holistic approach to the subject. The authors address the many negative impacts on regional economies and the environment of poorly planned and inadequate winter road operations, and they make a strong case for the myriad benefits of environmentally sustainable concepts and practices. Best practice applications of materials, processes, equipment, and associated technologies and how they can improve the effectiveness and efficiency of winter operations, optimize materials usage, and minimize cost, corrosion, and environmental impacts are all covered in depth. Provides the first up-to-date, authoritative and comprehensive overview of best practices in sustainable winter road operations currently in use around the world Covers materials, processes, equipment, and associated technologies for sustainable winter road operations Brings together contributions by an international all-star team of experts with extensive experience in designing, implementing, and managing sustainable winter road operations Designed to bring professionals involved in transportation and highway maintenance and control up to speed with current best practice Sustainable Winter Road Operations is essential reading for maintenance professionals dealing with snow and ice control operations on highways, motorways and local roads. It is a valuable source of information and guidance for decision makers, researchers, and engineers in transportation engineering involved in transportation and highway maintenance. And it is an ideal textbook for advanced-level courses in transportation engineering.
Author : Kun Zhang
Publisher : Springer
ISBN 13 : 3319957899
Total Pages : 179 pages
Book Rating : 4.3/5 (199 download)
Download or read book Testing and Characterization of Asphalt Materials and Pavement Structures written by Kun Zhang and published by Springer. This book was released on 2018-07-11 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents new studies dealing with the attempts made by the scientists and practitioners to address contemporary issues in pavement engineering such as aging and modification of asphalt binders, performance evaluation of warm mix asphalt, and mechanical-based pavement structure analysis, etc.. Asphalt binder and mixture have been widely used to construct flexible pavements. Mechanical and Chemical characterizations of asphalt materials and integration of these properties into pavement structures and distresses analysis are of great importance to design a sustainable flexible pavement. This book includes discusses and new results dealing with these issues. Papers were selected from the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, held on July 23 to 25, 2018 in HangZhou, China.
Author :
Publisher :
ISBN 13 : 9780309058063
Total Pages : 193 pages
Book Rating : 4.0/5 (58 download)
Download or read book Binder Characterization and Evaluation written by and published by . This book was released on 1994 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes the development of test methods for the characterization of asphalt cement. These test methods may be used in specifications and for developing correlations between physical and chemical properties. To understand how the properties of asphalt cement and asphalt concrete mixtures relate to one another, fundamental material properties expressed in engineering units were required. This information was used to develop models that relate the properties of asphalt cement to mixture properties and, in turn, to pavement performance. A method for the extraction and recovery of asphalt binder from asphalt mixes is also included.
Author : David A. Anderson
Publisher : Strategic Highway Research Program (Shrp)
ISBN 13 :
Total Pages : 504 pages
Book Rating : 4.E/5 ( download)
Download or read book Binder Characterization and Evaluation written by David A. Anderson and published by Strategic Highway Research Program (Shrp). This book was released on 1994 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jack S. Youtcheff
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.E/5 ( download)
Download or read book Guideline for Asphalt Refiners and Suppliers written by Jack S. Youtcheff and published by . This book was released on 1994 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jian-Shiuh Chen
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (125 download)
Download or read book Physical and Chemical Properties of Asphalts Associated With Performance written by Jian-Shiuh Chen and published by . This book was released on 2014 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed data were collected from field and laboratory evaluations to determine whether changes in crude oils affect the physical and chemical properties of asphalt binders over time. The test results indicated that asphalt cement properties produced today have the same range of values as those produced in the 1990s. Asphalts with high-viscosity susceptibility were shown to be associated with pavement distress. Field evaluations showed that asphalts with a viscosity susceptibility value lower than 0.088 will perform well without premature failure. Asphalts containing relatively low asphaltenes, particularly those of softer grade, appeared to have a greater probability of producing mixtures that could lead to pavement distress. Data analyses revealed that a good knowledge of the physical characteristics and chemical composition of asphalts can provide a useful tool for distinguishing between asphalts associated with pavement performance.
Author : Robert Grover Allen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (869 download)
Download or read book Microstructural Characterization of the Chemo-mechanical Behavior of Asphalt in Terms of Aging and Fatigue Performance Properties written by Robert Grover Allen and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of asphalt chemo-mechanics requires a basic understanding of the physical properties and chemical composition of asphalt and how these properties are linked to changes in performance induced by chemical modifications. This work uniquely implements the framework of chemo-mechanics by investigating two types of chemical modification processes, natural (oxidative aging) and synthetic (chemical doping) as they relate not only to macro-scale properties of asphalt binder but also to the asphalt microstructure and nanorheology. Furthermore, this study demonstrates the application of atomic force microscopy (AFM) imaging and the extraction of nano-scale engineering properties, i.e. elastic modulus, relaxation modulus, and surface energy, as a method to predict performance related to the fatigue characteristics of asphalt binders by modeling intrinsic material flaws present amongst phase interfaces. It was revealed that oxidative aging induces substantial microstructural changes in asphalt, including variations in phase structure, phase properties, and phase distribution. It has also been shown that certain asphalt chemical parameters have a consistent and measureable effect on the asphalt microstructure that is observed with AFM. In fact, particular phases that emerged via chemical doping revealed a surprising correlation between oxidative aging and the saturates chemical parameter of asphalt in terms of how they explicitly impact durability and performance of asphalt. By implementing a crack initiation model -- which requires measureable microstructural characteristics as an input parameter -- it was found that microstructural flaws (depending on the extremity) can have a more profound impact on asphalt performance than the properties of the material located between the flaws. It was also discovered by comparing the findings to performance data in the Strategic Highway Research Program's (SHRP's) Materials Reference Library (MRL), that the crack initiation model predicts very similar performance as the SHRP's distress resistance indicators. Overall, this body of work yields improved input values for asphalt prediction models and serves as the basis for ongoing studies in the areas of asphalt chemical mapping, modeling of nano-damage, and nano-modification using AFM. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/149372
Author :
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (1 download)
Download or read book Evaluation of Asphalt Properties and Their Relationship to Pavement Performance written by and published by . This book was released on 1986 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lily D. Poulikakos
Publisher : Springer
ISBN 13 : 3030004767
Total Pages : 315 pages
Book Rating : 4.0/5 (3 download)
Download or read book RILEM 252-CMB Symposium written by Lily D. Poulikakos and published by Springer. This book was released on 2018-09-12 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the Proceedings of the RILEM TC 252-CMB International Symposium on the Chemo-Mechanical Characterization of Bituminous Materials. The Symposium was attended by researchers and practitioners from different fields presenting the latest findings in the chemical, mechanical, and microstructural characterization of bituminous materials. The book offers new and cutting edge papers on innovative techniques for the characterization of bituminous materials, gaining new insights into current issues such as effects of aging, moisture, and temperature.
Author :
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.3/5 ( download)
Download or read book Characteristics of Asphalt Binders written by and published by . This book was released on 1996 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lamar Caylor
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (1 download)
Download or read book Asphalt Characterization and Performance Study written by Lamar Caylor and published by . This book was released on 1987 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
