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Fatigue Evaluation Criteria For Aged Hot Mix Asphalt Surfaces
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Book Synopsis Fatigue Evaluation Criteria for Aged Hot-mix Asphalt Surfaces by : Haley P. Bell
Download or read book Fatigue Evaluation Criteria for Aged Hot-mix Asphalt Surfaces written by Haley P. Bell and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An evaluation of aged hot-mix asphalt (HMA) pavements was accomplished to develop a method for improving the prediction of remaining fatigue life of aged HMA surfaces. This is important for both planning Department of Defense airfield maintenance funds and for predicting the performance of operating surfaces in the theater of operation. This study involved the evaluation of HMA at several military airfields. After field inspections and field testing, slab samples were carried to the U.S. Army Engineer Research and Development Center for laboratory testing. Laboratory testing included the determination of mixture and binder properties, indirect tensile strength tests on cored specimens, and beam fatigue tests. The results from this study were used to develop improved fatigue performance predictions for field-aged HMA pavements.
Book Synopsis FATIGUE EVALUATION CRITERIA FOR AGED HOT-MIX ASPHALT SURFACES. by :
Download or read book FATIGUE EVALUATION CRITERIA FOR AGED HOT-MIX ASPHALT SURFACES. written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An evaluation of aged hot-mix asphalt (HMA) pavements was accomplished to develop a method for improving the prediction of remaining fatigue life of aged HMA surfaces. This is important for both planning Department of Defense airfield maintenance funds and for predicting the performance of operating surfaces in the theater of operation. This study involved the evaluation of HMA at several military airfields. After field inspections and field testing, slab samples were carried to the U.S. Army Engineer Research and Development Center for laboratory testing. Laboratory testing included the determination of mixture and binder properties, indirect tensile strength tests on cored specimens, and beam fatigue tests. The results from this study were used to develop improved fatigue performance predictions for field-aged HMA pavements.
Book Synopsis A Manual for Design of Hot Mix Asphalt with Commentary by :
Download or read book A Manual for Design of Hot Mix Asphalt with Commentary written by and published by Transportation Research Board. This book was released on 2011 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Validating the Fatigue Endurance Limit for Hot Mix Asphalt by : Brian D. Prowell
Download or read book Validating the Fatigue Endurance Limit for Hot Mix Asphalt written by Brian D. Prowell and published by Transportation Research Board. This book was released on 2010 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: At head of title: National Cooperative Highway Research Program.
Book Synopsis Laboratory Evaluation of Hot-mix Asphalt Concrete Fatigue Cracking Resistance by : Brandon Parker Jamison
Download or read book Laboratory Evaluation of Hot-mix Asphalt Concrete Fatigue Cracking Resistance written by Brandon Parker Jamison and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent changes in the Texas Department of Transportation (TxDOT) hot mix asphalt (HMA) mix design procedures to ensure that the mixture types routinely used on Texas highways are not prone to rutting raised concerns that these mixture types are now more susceptible to fatigue cracking. The primary goal of this study was to evaluate fatigue cracking test methods and recommend that which is both simple and robust, especially in qualifying commonly used Texas mixture types. One way to minimize fatigue cracking is through material screening and selection of appropriate mix designs that are representative of fatigue-resistant HMA mixes. However, there are not many standardized laboratory fracture resistance tests that have been universally adopted for routine mix design and/or screening purposes for HMA fatigue resistance. In this study, four different fracture test methods: the Overlay Tester (OT), Direct Tension (DT), Indirect Tension (IDT), and Semicircular Bending (SCB) tests were comparatively evaluated for their potential application as surrogate tests for routine fracture resistance evaluation and screening of HMA mixes in the laboratory. The evaluation criteria included: rationality of the test concept and correlation to field performance, repeatability and variability, simplicity and practicality of the sample fabrication process, and simplicity of data analysis. Results and key findings based on the laboratory fatigue resistance characterization of various commonly used Texas coarse- and fine-graded HMA mixes (Type B, C, and D) are presented in this paper. Overall, preliminary findings indicated that no monotonically-loaded test would be appropriate as a surrogate fatigue resistance test; however, the SCB test showed potential as a repeated-loading test. Suggested SCB test improvements include developing the repeated SCB test protocol, determining the appropriate failure criterion, and correlating laboratory performance to field performance.
Book Synopsis Evaluation of the Effect of Deflection Waveform on Fatigue Test Results for Hot Mix Asphalt by : Angel Mateos
Download or read book Evaluation of the Effect of Deflection Waveform on Fatigue Test Results for Hot Mix Asphalt written by Angel Mateos and published by . This book was released on 2017 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Application of Calibrated Mechanistic Fatigue Analysis with Aging Effects by :
Download or read book Application of Calibrated Mechanistic Fatigue Analysis with Aging Effects written by and published by . This book was released on 2006 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work contained in this report constitutes Phase II of Texas Department of Transportation (TxDOT) Project 0-4468. The primary objective of Phase II was to provide additional laboratory validation and sensitivity analysis of the calibrated mechanistic with (CMSE) and without (CM) surface energy measurements fatigue analysis approaches recommended in Report 0-4468-2. The second objective was to provide a better understanding of the binder-mixture relationships and effects of binder oxidative aging on both mixture fracture properties and fatigue life (N sub f). The third objective was to explore the possibility of establishing a surrogate fatigue test protocol based on the CMSE approach. These objectives were achieved through fatigue characterization of additional hot-mix asphalt concrete (HMAC) mixtures with different mix-design parameters and materials under varying laboratory aging exposure conditions.
Book Synopsis Improved Mix Design, Evaluation, and Materials Management Practices for Hot Mix Asphalt with High Reclaimed Asphalt Pavement Content by : Randy Clark West
Download or read book Improved Mix Design, Evaluation, and Materials Management Practices for Hot Mix Asphalt with High Reclaimed Asphalt Pavement Content written by Randy Clark West and published by Transportation Research Board. This book was released on 2013 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Introduction to Unmanned Aircraft Systems, Second Edition by : Douglas M. Marshall
Download or read book Introduction to Unmanned Aircraft Systems, Second Edition written by Douglas M. Marshall and published by CRC Press. This book was released on 2015-10-26 with total page 1944 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proliferation of technological capability, miniaturization, and demand for aerial intelligence is pushing unmanned aerial systems (UAS) into the realm of a multi-billion dollar industry. This book surveys the UAS landscape from history to future applications. It discusses commercial applications, integration into the national airspace system (NAS), System function, operational procedures, safety concerns, and a host of other relevant topics. The book is dynamic and well-illustrated with separate sections for terminology and web- based resources for further information.
Book Synopsis Comparison of Fatigue Analysis Approaches for Predicting Fatigue Lives of Hot-mix Asphalt Concrete (HMAC) Mixtures by :
Download or read book Comparison of Fatigue Analysis Approaches for Predicting Fatigue Lives of Hot-mix Asphalt Concrete (HMAC) Mixtures written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Hot-mix asphalt concrete (HMAC) mixture fatigue characterization constitutes a fundamental component of HMAC pavement structural design and analysis to ensure adequate field fatigue performance. HMAC is a heterogeneous complex composite material of air, binder, and aggregate that behaves in a non-linear elasto-viscoplastic manner, exhibits anisotropic behavior, ages with time, and heals during traffic loading rest periods and changing environmental conditions. Comprehensive HMAC mixture fatigue analysis approaches that take into account this complex nature of HMAC are thus needed to ensure adequate field fatigue performance. In this study, four fatigue analysis approaches; the mechanistic empirical (ME), the calibrated mechanistic with (CMSE) and without (CM) surface energy measurements, and the proposed NCHRP 1-37A 2002 Pavement Design Guide (MEPDG) were comparatively evaluated and utilized to characterize the fatigue resistance of two Texas HMAC mixtures in the laboratory, including investigating the effects of binder oxidative aging. Although the results were comparable, the CMSE/CM approaches exhibited greater flexibility and potential to discretely account for most of the fundamental material properties (including fracture, aging, healing, visco-elasticity, and anisotropy) that affect HMAC pavement fatigue performance. Compared to the other approaches, which are mechanistic-empirically based, the CMSE/CM approaches are based on the fundamental concepts of continuum micromechanics and energy theory.
Book Synopsis Fatigue Cracking Resistance Evaluation of Warm Mix Asphalt and Hot Mix Asphalt Mixtures Using Uniaxial Cyclic Tension Compression Text by : Mohamed Monir Mohamed Said Haggag
Download or read book Fatigue Cracking Resistance Evaluation of Warm Mix Asphalt and Hot Mix Asphalt Mixtures Using Uniaxial Cyclic Tension Compression Text written by Mohamed Monir Mohamed Said Haggag and published by . This book was released on 2008 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Long-Life Surfaces for Busy Roads by : International Transport Forum
Download or read book Long-Life Surfaces for Busy Roads written by International Transport Forum and published by OECD Publishing. This book was released on 2008-04-15 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the feasibility of using epoxy asphalt and high performance cementitious materials, which are more expensive but last longer and require less maintenance than conventional materials, for high traffic roads.
Download or read book Hot-mix Asphalt Mixtures written by and published by . This book was released on 1999 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue Resistance of Hot-mix Asphalt Concrete (HMAC) Mixtures Using the Calibrated Mechanistic with Surface Energy (CMSE) Measurements Approach by : Edward Kwame Ofori-Abebresse
Download or read book Fatigue Resistance of Hot-mix Asphalt Concrete (HMAC) Mixtures Using the Calibrated Mechanistic with Surface Energy (CMSE) Measurements Approach written by Edward Kwame Ofori-Abebresse and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue cracking is one of the fundamental distresses that occur in the life of a Hot Mix Asphalt Concrete (HMAC) pavement. This load induced distress leads to structural collapse of the entire pavement ultimately and can only be remedied by rehabilitation. There is the need, therefore, for a total understanding of the phenomenon to be able to counter its occurrence. The fatigue resistance of hot mix asphalt concrete (HMAC) has been estimated using approaches ranging from empirical methods to mechanistic-empirical methods to purely mechanistic methods. A continuum mechanics based approach called the Calibrated Mechanistic with Surface Energy (CMSE) measurements was developed at Texas A & M University and recommended after comparison with other approaches in predicting fatigue lives of two Texas HMAC mixtures. The CMSE approach which includes fundamental material properties such as fracture, aging, healing, and anisotropy has been shown to effectively model the parameters that affect the performance of HMAC pavements exposed to repetitive traffic loads. Polymer modified asphalt (PMA) improves pavement performance by providing additional resistance to the primary distresses in flexible pavements, including permanent deformation or rutting, thermal cracking, and fatigue cracking. In this research, the CMSE approach was utilized to estimate the fatigue resistance of HMAC fabricated with asphalts modified with Styrene-butadiene-Styrene (SBS) co-block polymer. These HMAC mixtures were fabricated from materials used on three different road sections in Texas and one test pavement in Minnesota. The CMSE approach was validated as an effective approach for estimating the fatigue resistance of HMAC mixtures with PMA. The effect of oxidative aging on the fatigue resistance of the HMAC mixtures was also verified. Oxidative aging of the mixtures resulted in a corresponding decrease in mixture fatigue resistance. In addition, for two HMAC mixtures with the same binder content and aggregate gradation, the mixture with the softer of the two Performance Grade (PG) binders exhibited greater fatigue resistance. The use of the Utility Theory revealed the possible effects of aggregate geometric properties on the HMAC mixture properties and consequently on their fatigue resistance.
Book Synopsis Fatigue Analysis and Pay Factor Development for Hot Mix Asphalt Pavements in Michigan by : Michael A. Zelenock
Download or read book Fatigue Analysis and Pay Factor Development for Hot Mix Asphalt Pavements in Michigan written by Michael A. Zelenock and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue and Stiffness Evaluations of Reclaimed Asphalt Pavement in Hot Mix Asphalt Mixtures by : Feipeng Xiao
Download or read book Fatigue and Stiffness Evaluations of Reclaimed Asphalt Pavement in Hot Mix Asphalt Mixtures written by Feipeng Xiao and published by . This book was released on 2011 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recycling of existing asphalt pavement materials produces new pavements with considerable savings in material, money, and energy. Understanding the ability of an asphalt pavement containing reclaimed asphalt pavement (RAP) to resist fracture from repeated loads is essential for the design of hot mix asphalt (HMA) mixtures. However, reaching a better understanding of fatigue behaviors of these pavements continues to challenge researchers all over the world, particularly, as recycled materials with more complex properties are being used in HMA pavements. This study explores the utilization of the conventional fatigue analysis approach in investigating the fatigue life of asphalt mixtures containing RAP. The fatigue beams were made with two asphalt binders, two aggregate sources, four RAP contents (0 %, 15 %, 25 %, and 30 %), and tested at 5 and 20°C. A total of eight mixtures was evaluated and 64 fatigue beams were tested in this study. The test results indicated that the addition of RAP, as expected, increased the viscosity, G*sin?, and creep stiffness values while reducing the m-values. However, no obvious trends were found for stiffness and fatigue life of mixtures as the RAP content increased. Statistical analysis results indicated that for binders and mixtures containing 30 % RAP, the utilization of softer binder significantly decreased the viscosity, G*sin?, and creep stiffness values; however, there were no significant differences in the stiffness and fatigue life values of these mixtures.
Book Synopsis Asphalt Paving Technology 2011 by : Eugene L. Skok
Download or read book Asphalt Paving Technology 2011 written by Eugene L. Skok and published by DEStech Publications, Inc. This book was released on 2011-06-28 with total page 801 pages. Available in PDF, EPUB and Kindle. Book excerpt:
