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Author : Kyle Turner
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.:/5 (952 download)
Download or read book Evaluation of Asphalt Mixture Performance Tester and Testing Protocol written by Kyle Turner and published by . This book was released on 2015 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Neethu Roy
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (125 download)
Download or read book A Re-Look at the Asphalt Mixture Performance Test Protocols and Computational Algorithms written by Neethu Roy and published by . This book was released on 2013 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt mixture performance tests (AMPTs) are developed to complement the Superpave volumetric mix design procedure and to reliably measure the mechanical response characteristics of the asphalt mixtures. The AMPT protocols, such as dynamic modulus, flow time and flow number test protocols, and the computational algorithms for post-processing of data are in the development stages and require further refinement. In this investigation, AMPTs were carried out on asphalt mixtures with unmodified, polymer-modified, and crumb-rubber-modified binders. Dynamic modulus test was carried out for a wide range of temperatures and frequencies and master curves were constructed. It was observed that the American Association of State Highway and Transportation Officials (AASHTO) procedure for master curves does not take into account the influence of phase angle, and this could hinder the effective use of this input in pavement design and analysis. Flow time and flow number tests were carried out for an extended time of 100 000 s (cycles) rather than the currently practised 10 000 s (cycles) protocol. The test data was used in assessing the various algorithms for evaluating flow values. A wheel tracking test was also carried out and it was found that the response of mixtures could be correlated to wheel tracking test results in a qualitative manner to the flow time test.
Author : Ramon Francis Bonaquist
Publisher : Transportation Research Board
ISBN 13 : 0309213363
Total Pages : 211 pages
Book Rating : 4.3/5 (92 download)
Download or read book Precision of the Dynamic Modulus and Flow Number Tests Conducted with the Asphalt Mixture Performance Tester written by Ramon Francis Bonaquist and published by Transportation Research Board. This book was released on 2011 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB’s National Cooperative Highway Research Program (NCHRP) Report 702: Precision of the Dynamic Modulus and Flow Number Tests Conducted with the Asphalt Mixture Performance Tester describes the development of precision statements for the dynamic modulus and flow number tests conducted with the Asphalt Mixture Performance Tester.
Author : Louay Nadhim Mohammad
Publisher : ASTM International
ISBN 13 : 0803134959
Total Pages : 216 pages
Book Rating : 4.8/5 (31 download)
Download or read book Performance Tests for Hot Mix Asphalt (HMA) Including Fundamental and Empirical Procedures written by Louay Nadhim Mohammad and published by ASTM International. This book was released on 2006 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ramon Francis Bonaquist
Publisher : Transportation Research Board
ISBN 13 : 0309087821
Total Pages : 169 pages
Book Rating : 4.3/5 (9 download)
Download or read book Simple Performance Tester for Superpave Mix Design written by Ramon Francis Bonaquist and published by Transportation Research Board. This book was released on 2003 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: The global response to COVID-19 has demonstrated the importance of vigilance and preparedness for infectious diseases, particularly influenza. There is a need for more effective influenza vaccines and modern manufacturing technologies that are adaptable and scalable to meet demand during a pandemic. The rapid development of COVID-19 vaccines has demonstrated what is possible with extensive data sharing, researchers who have the necessary resources and novel technologies to conduct and apply their research, rolling review by regulators, and public-private partnerships. As demonstrated throughout the response to COVID-19, the process of research and development of novel vaccines can be significantly optimized when stakeholders are provided with the resources and technologies needed to support their response. Vaccine Research and Development to Advance Pandemic and Seasonal Influenza Preparedness and Response focuses on how to leverage the knowledge gained from the COVID-19 pandemic to optimize vaccine research and development (R&D) to support the prevention and control of seasonal and pandemic influenza. The committee's findings address four dimensions of vaccine R&D: (1) basic and translational science, (2) clinical science, (3) manufacturing science, and (4) regulatory science.
Author : Levi A. Roberts
Publisher :
ISBN 13 :
Total Pages : 39 pages
Book Rating : 4.:/5 (87 download)
Download or read book Evaluation of the Asphalt Mixture Performance Tester (AMPT) written by Levi A. Roberts and published by . This book was released on 2012 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Y. Richard Kim
Publisher :
ISBN 13 : 9780309446839
Total Pages : 104 pages
Book Rating : 4.4/5 (468 download)
Download or read book Long-term Aging of Asphalt Mixtures for Performance Testing and Prediction written by Y. Richard Kim and published by . This book was released on 2018 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Cassie Castorena
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (126 download)
Download or read book Ruggedness and Interlaboratory Studies for Asphalt Mixture Performance Tester (AMPT) Cyclic Fatigue Test written by Cassie Castorena and published by . This book was released on 2021 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report highlights findings from Phase I of a project designed to evaluate the ruggedness of the standards for cyclic fatigue testing using an Asphalt Mixture Performance Tester (AMPT). These standards include AASHTO TP 107-18 and 133-19, which are applicable to 100-mm diameter and 38-mm diameter test specimens, respectively. The ruggedness evaluation conducted adheres to the requirements of ASTM E1169-14 and integrates ASTM C1067-12 recommendations, which are specifically for construction materials. The experimental factors evaluated included air-void content, specimen height, diameter difference between loading platen and specimen, loading-platen parallelism, rest period between the dynamic modulus fingerprint and cyclic fatigue test, strain level, and temperature. Based on the outcomes of this experiment and several supplementary studies, changes to the AASHTO TP 107-18 and TP 133-19 protocols were proposed.
Author : Donald W. Christensen
Publisher : Transportation Research Board
ISBN 13 : 0309088089
Total Pages : 62 pages
Book Rating : 4.3/5 (9 download)
Download or read book Evaluation of Indirect Tensile Test (IDT) Procedures for Low-temperature Performance of Hot Mix Asphalt written by Donald W. Christensen and published by Transportation Research Board. This book was released on 2004 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction and Research Approach -- Findings -- Interpretation, Appraisal, and Applications -- Conclusions and Recommendations -- References -- Appendixes.
Author : United States. Federal Highway Administration. Office of Pavement Technology
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (14 download)
Download or read book Asphalt Mixture Performance Tester (AMPT) written by United States. Federal Highway Administration. Office of Pavement Technology and published by . This book was released on 2013 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The AMPT complements current asphalt mixture design procedures by providing engineering properties for mixture evaluation and pavement structural design. This Technical Brief summarizes the development of the AMPT and describes how the AMPT can be used in pavement structural design and mixture design.
Author : Rebecca S. McDaniel
Publisher :
ISBN 13 : 9781622605118
Total Pages : pages
Book Rating : 4.6/5 (51 download)
Download or read book Development of a Friction Performance Test for Compacted Asphalt Mixtures written by Rebecca S. McDaniel and published by . This book was released on 2018-03 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In a previous JTRP project published in 2010, Identification of Laboratory Techniques to Optimize Superpave HMA Surface Friction Characteristics, a laboratory procedure to polish and test the frictional properties of asphalt mixtures was developed. Subsequently, the procedure has been used in other research efforts to evaluate the frictional properties of recycled asphalt pavement (RAP) and local (possibly marginal) aggregate blends and for other testing purposes. Most notably, the procedure has been developed into Indiana Test Method (ITM) 221, "Acceptance Procedures for HMA Surface Mixture Coarse Aggregates for ESAL ¿10,000,000." The method requires compaction, polishing and testing of 500 mm by 500 mm (20 in. by 20 in.) square slabs of asphalt mix. This research project was initiated based to explore the possibility of expanding use of the lab polishing/testing procedure to test gyratory specimens or field cores. It was envisioned that such a method could be used during mix design as a check on potential frictional properties and/or as a quality acceptance test. A means of fabricating a circular test ring from seven cylindrical specimens was developed and used to test five different plant produced mixtures. Comparisons of ITM 221 slabs, gyratory specimens compacted to different air void contents and field cores showed cylindrical specimens could yield similar results to the accepted slab test method.
Author : Thomas Bennert
Publisher :
ISBN 13 :
Total Pages : 81 pages
Book Rating : 4.:/5 (125 download)
Download or read book Performance Evaluation of Asphalt Mixture Statewide written by Thomas Bennert and published by . This book was released on 2021 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently, asphalt mixtures are designed using volumetric concepts to determine optimum asphalt content levels with no means of verifying mixture performance prior to field production and placement. A new design methodology called Balanced Mixture Design (BMD) promotes the use of evaluating and design asphalt mixture using rutting and fatigue cracking methods and criteria to achieve an optimum asphalt content that will result in an asphalt mixture performing well in rutting and fatigue cracking scenarios -thereby "balancing" the asphalt mixture performance. A study was conducted using approved New York State Department of Transportation (NYSDOT) approved asphalt mixtures within this BMD procedure. The approved asphalt mixtures were previously designed using volumetric concepts, allowing for a comparison between performance-based design procedures (BMD) and volumetric procedures. The study showed that of the eleven (11) asphalt mixtures evaluated, six (6) of the asphalt mixtures were found to not meet the BMD fatigue cracking based minimum asphalt content. None of the approved asphalt mixtures failed the rutting performance criteria. The data generated in the study also enabled for the recommendation of performance criteria for the High Temperature IDT Strength test for rutting and IDEAL-CT Index test for fatigue cracking.
Author : Ronald L. Terrel
Publisher : National Research Council
ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.:/5 (1 download)
Download or read book Water Sensitivity of Asphalt-aggregate Mixes written by Ronald L. Terrel and published by National Research Council. This book was released on 1994 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research presented in this report was conducted to identify the important factors influencing the water sensitivity of asphalt paving mixtures, and to develop a test method to evaluate water sensitivity of asphalt concrete mixtures for mix design. The test method was to be performance related. A review of current procedures revealed that no single method was suitable for evaluation and related to field performance. Based on a hypothesis that air voids in the mixture may be the major source and cause of water damage, a test system was developed to evaluate the major factors that influence water sensitivity. The Environmental Conditioning System (ECS) was used to develop a test procedure that includes specimen preparation; measurement of permeability using air, water, or both; vacuum wetting; cycling at various temperatures; and continuous repeated loading while monitoring resilient modulus after each conditioning cycle.
Author : Brian K. Diefenderfer
Publisher :
ISBN 13 :
Total Pages : 50 pages
Book Rating : 4.:/5 (914 download)
Download or read book Asphalt Mixture Performance Characterization Using Small-Scale Cylindrical Specimens written by Brian K. Diefenderfer and published by . This book was released on 2015 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of dynamic modulus testing have become one of the primarily used performance criteria to evaluate the laboratory properties of asphalt mixtures. This test is commonly conducted to characterize asphalt mixtures mechanistically using an asphalt mixture performance tester as developed in NCHRP Project 9-29. The typical test specimen geometry consists of a cylinder having a 100-mm diameter and a 150-mm height. This geometry is practical for laboratory-prepared specimens produced using a gyratory compactor. However, the specimen scale is problematic when the test specimen is prepared from field cores and the investigator wishes to isolate the testing to a single asphalt mixture material/layer. This is because most asphalt mixture layers, especially surface and intermediate layers, are placed having a thickness less than 150 mm. This study investigated the use of small-scale cylindrical specimens as an alternative means to conduct dynamic modulus testing of asphalt mixtures. To validate the small-scale approach, the dynamic modulus from small-scale specimens was compared to the dynamic modulus from full-size specimens (100 × 150 mm) using asphalt mixtures having a nominal maximum aggregate size (NMAS) of 9.5, 12.5, 19.0, and 25.0 mm. Small-scale cylindrical specimens having a diameter and height of 38 × 135 mm, 50 × 135 mm, 38 × 110 mm, and 50 × 110 mm were studied. Based on the findings of the study, for 9.5- and 12.5-mm NMAS mixtures, any of the four small-scale geometry dimensions appears to be a suitable alternative to the full-size specimen when the full-size specimen cannot be produced. For 19.0- and 25.0-mm NMAS mixtures, the two small-scale geometries having a diameter of 50 mm appear to be suitable alternatives to the full-size specimen when the full-size specimen cannot be produced.
Author : Brian K. Diefenderfer
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (918 download)
Download or read book Asphalt Mixture Performance Characterization Using Small-Scale Cylindrical Specimens written by Brian K. Diefenderfer and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of dynamic modulus testing have become one of the primarily used performance criteria to evaluate the laboratory properties of asphalt mixtures. This test is commonly conducted to characterize asphalt mixtures mechanistically using an asphalt mixture performance tester as developed in NCHRP Project 9-29. The typical test specimen geometry consists of a cylinder having a 100-mm diameter and a 150-mm height. This geometry is practical for laboratory-prepared specimens produced using a gyratory compactor. However, the specimen scale is problematic when the test specimen is prepared from field cores and the investigator wishes to isolate the testing to a single asphalt mixture material/layer. This is because most asphalt mixture layers, especially surface and intermediate layers, are placed having a thickness less than 150 mm. This study investigated the use of small-scale cylindrical specimens as an alternative means to conduct dynamic modulus testing of asphalt mixtures. To validate the small-scale approach, the dynamic modulus from small-scale specimens was compared to the dynamic modulus from full-size specimens (100 × 150 mm) using asphalt mixtures having a nominal maximum aggregate size (NMAS) of 9.5, 12.5, 19.0, and 25.0 mm. Small-scale cylindrical specimens having a diameter and height of 38 × 135 mm, 50 × 135 mm, 38 × 110 mm, and 50 × 110 mm were studied. Based on the findings of the study, for 9.5- and 12.5-mm NMAS mixtures, any of the four small-scale geometry dimensions appears to be a suitable alternative to the full-size specimen when the full-size specimen cannot be produced. For 19.0- and 25.0-mm NMAS mixtures, the two small-scale geometries having a diameter of 50 mm appear to be suitable alternatives to the full-size specimen when the full-size specimen cannot be produced.
Author : Manfred N. Partl
Publisher : RILEM Publications
ISBN 13 : 9782912143358
Total Pages : 658 pages
Book Rating : 4.1/5 (433 download)
Download or read book PRO 28: 6th International RILEM Symposium on Performance Testing and Evaluation of Bituminous Materials (PTEBM'03) written by Manfred N. Partl and published by RILEM Publications. This book was released on 2003 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L. Francken
Publisher : CRC Press
ISBN 13 : 0203627318
Total Pages : 230 pages
Book Rating : 4.2/5 (36 download)
Download or read book Bituminous Binders and Mixes written by L. Francken and published by CRC Press. This book was released on 2004-03-01 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the studies presented in this report is the implementation of rational concepts and testing procedures for the design and manufacture of bituminous materials for applications in pavement construction. Practical test procedures are recommended for binder evaluation, mix design and performance assessment of bituminous materials. The three main topics addressed are binder testing, mix design and mechanical testing of mixtures. Each is examined through interlaboratory tests and there is a literary review of existing practices and methods for the production of polymer modified binders, mixture design and the mechanical properties of mixtures.
