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Validation Of Applicability Of Superpave Small Capitals Tm Binder Test Protocol For Performance Grading Of Crumb Rubber Modified Asphalt Binder
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Book Synopsis Validation of Applicability of Superpave [small Capitals TM] Binder Test Protocol for Performance Grading of Crumb Rubber Modified Asphalt Binder by : Akhtarhusein Asgarali Tayebali
Download or read book Validation of Applicability of Superpave [small Capitals TM] Binder Test Protocol for Performance Grading of Crumb Rubber Modified Asphalt Binder written by Akhtarhusein Asgarali Tayebali and published by . This book was released on 1997 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to verify the applicability of the Superpave test protocol to modified asphalt binders. The study was conducted using crumb rubber (40-mesh coarse graded and 80-mesh fine graded) modified asphalt binders.
Book Synopsis Performance testing for Superpave and structural validation by : Nelson Gibson
Download or read book Performance testing for Superpave and structural validation written by Nelson Gibson and published by . This book was released on 2012 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this full-scale accelerated pavement testing was to evaluate the performance of unmodified and polymer modified asphalt binders and to recommend improved specification tests over existing SUperior PERforming Asphalt PAVEment (Superpave) binder performance grading methodologies. Candidate replacement tests were evaluated via their ability to discern fatigue cracking resistance and rutting. Two fatigue cracking specification tests were identified as more capable in capturing performance than others: binder yield energy and critical tip opening displacement. Two rutting specification tests that quantify irrecoverable deformations exhibited the best strength to capture rutting: multiple stress creep and recovery and oscillatory-based nonrecoverable stiffness. Based on the full-scale performance and laboratory tests, crumb rubber (recycled tires) modified asphalt (Arizona wet process) was shown to significantly slow or stop the growth of fatigue cracks in a composite asphalt pavement structure. A hybrid technique to modify asphalt with a combination of crumb rubber and conventional polymers (terminally blended) exhibited good fatigue cracking resistance relative to the control binder. Also, a simple addition of polyester fibers to asphalt mix was shown to have high resistance to fatigue cracking without the use of polymer modification. The research study also quantified the capabilities of the National Cooperative Highway Research Program's mechanistic-empirical pavement design and analysis methodologies to predict rutting and fatigue cracking of modified asphalts that were not captured in the calibration data from the Long-Term Pavement Performance program. Falling weight deflectometer, multidepth deflectometer, and strain gauge instrumentation were used to measure pavement response. The results illustrated that the nationally calibrated mechanistic-empirical performance models could differentiate between structural asphalt thickness but had difficulty differentiating modified from unmodified asphalt binder performance. Nonetheless, the mechanistic-empirical performance ranking and predictions were enhanced and improved using mixture-specific performance tests currently being implemented using the asphalt mixture performance tester.
Book Synopsis Validation of the Superpave Asphalt Binder Fatigue Cracking Parameter Using an Accelerated Loading Facility by : Kevin D. Stuart
Download or read book Validation of the Superpave Asphalt Binder Fatigue Cracking Parameter Using an Accelerated Loading Facility written by Kevin D. Stuart and published by . This book was released on 2002 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Grade Determination of Crumb Rubber-modified Performance Graded Asphalt Binder by : Thomas Bennert
Download or read book Grade Determination of Crumb Rubber-modified Performance Graded Asphalt Binder written by Thomas Bennert and published by . This book was released on 2013 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to particulates common in crumb rubber-modified asphalt binders, conventional PG grading using the Dynamic Shear Rheometer (DSR) with a gap height of 1.0 mm may not be valid and in accordance with current specifications. Asphalt binder testing and mixture testing was conducted on binders with and without crumb rubber modification to determine an asphalt binder test method which best matches the mixture performance. It was determined that the Multiple Stress Creep Recovery (MSCR) test, conducted with a gap height of 2.0 mm and at in-service temperatures, best correlated with Flow Number testing in the Asphalt Mixture Performance Tester (AMPT). This relationship was found to be better than that of the current DSR test procedure for high temperature PG grading.
Book Synopsis Superpave Protocols for Modified Asphalt Binders by : Huachun Zhai
Download or read book Superpave Protocols for Modified Asphalt Binders written by Huachun Zhai and published by . This book was released on 2001 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Graded Asphalt Binder Specification and Testing by :
Download or read book Performance Graded Asphalt Binder Specification and Testing written by and published by . This book was released on 1994 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The SUPERPAVE Mix Design System Manual of Specifications, Test Methods, and Practices by : Edward T. Harrigan
Download or read book The SUPERPAVE Mix Design System Manual of Specifications, Test Methods, and Practices written by Edward T. Harrigan and published by Strategic Highway Research Program (Shrp). This book was released on 1994 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The final product of the Strategic Highway Research Program (SHRP) Asphalt Research Program is the SUPERPAVE (registered trademark) mix design system for new construction and overlays. This system employs a series of new performance-based specifications, test methods, and practices for material selection, accelerated performance testing, and mix design. This report documents these new specifications and procedures in a format suitable for eventual American Association of State Highway and Transportation Officials (AASHTO) standardization.
Download or read book Superpave written by Asphalt institute and published by . This book was released on 2000 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Crumb Rubber Particle Size and Concentration on Performance Grading of Rubber Modified Asphalt Binders by : GA. Malpass
Download or read book Effect of Crumb Rubber Particle Size and Concentration on Performance Grading of Rubber Modified Asphalt Binders written by GA. Malpass and published by . This book was released on 1997 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study evaluates two aspects of the performance related SuperpaveTM binder specification methodology: 1) the applicability of the dynamic shear rheometer (DSR) to crumb rubber modified binders, and 2) the effect of crumb rubber particle size and concentration on the higher temperature performance grading of rubber modified asphalt binders.
Book Synopsis Advanced Characterization of Crumb Rubber Modified Asphalts Using Protocols Developed for Complex Binders by : Sohee Kim (Research assistant)
Download or read book Advanced Characterization of Crumb Rubber Modified Asphalts Using Protocols Developed for Complex Binders written by Sohee Kim (Research assistant) and published by . This book was released on 2000 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Applicability of Superpave Binder Testing Protocols to Modified Binders by : Hussain U. Bahia
Download or read book Applicability of Superpave Binder Testing Protocols to Modified Binders written by Hussain U. Bahia and published by . This book was released on 1997 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superpave written by and published by . This book was released on 2003 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Superpave Binder Specification with Performance of Polymer-Modified Asphalt Pavements by : R. Dongré
Download or read book Evaluation of Superpave Binder Specification with Performance of Polymer-Modified Asphalt Pavements written by R. Dongré and published by . This book was released on 1997 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper discusses the evaluation of Superpave binder specification using pavements constructed with polymer-modified asphalt binders. Performance data collected from pavement test sections constructed in Sherman and Texarkana, Texas, were used in this evaluation. The Sherman pavement sections were overlays constructed in 1986 on US-75 whereas the Texarkana sections were all new construction on US 59/71 in late 1986 and early 1987. Dense-graded hot-mix asphalt (HMA), which contained 16-mm (5/8-inch) maximum size aggregate, was used. The aggregate comprised crushed limestone and field sand. Traffic loading and performance data were collected for both sites. Superpave binder tests were conducted on original asphalt binders saved from the construction projects. Superpave Performance Grade (PG grade) were then established for these binders. Predicted performance from the Superpave PG grades was compared against the field performance. Results indicate that the Superpave rutting parameter predicts rutting resistance reasonably accurately. It was found that the accuracy of prediction of thermal cracking is improved if failure properties are also considered. Finally, it was shown that the Superpave fatigue parameter needs reevaluation.
Download or read book Asphalt Binder Testing written by and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now updated, this volume serves as a single resource to supplement Superpave PG asphalt binder system test methods. This new edition contains a chapter on the direct tension test (DTT), an introduction to the new multi-stress creep-recovery test (MSCR), a troubleshooting section and updated graphics.
Book Synopsis Performance Graded Asphalt Binder Specification and Testing by : Asphalt Institute
Download or read book Performance Graded Asphalt Binder Specification and Testing written by Asphalt Institute and published by . This book was released on 1995 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Re-Look at the Asphalt Mixture Performance Test Protocols and Computational Algorithms by : Neethu Roy
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.
Book Synopsis Validation of Relationships Between Specification Properties and Performance by : Rita B. Leahy
Download or read book Validation of Relationships Between Specification Properties and Performance written by Rita B. Leahy and published by National Research Council. This book was released on 1994 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the two-stage validation of the proposed binder and mix specifications and tests. Stage 1 addresses the validation of the specifications and tests with laboratory data; Stage 2, with field performance data. The report is divided into four chapters, the first of which outlines the validation process. Chapters 2 and 3 are devoted to Stage 1 and 2 validation, respectively, and include a comprehensive discussion of the laboratory testing undertaken to evaluate asphalt concrete performance in terms of permanent deformation, fatigue cracking, and low-temperature cracking. Chapter 4 addresses the validation testing conducted using modified materials.
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