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Sbs Polymer Modified Asphalt Binder And Its Implications On Overlay Design
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Book Synopsis SBS Polymer Modified Asphalt Binder and Its Implications on Overlay Design by : PC. Hopman
Download or read book SBS Polymer Modified Asphalt Binder and Its Implications on Overlay Design written by PC. Hopman and published by . This book was released on 1992 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Substantially improved overlay mixes, required by the modern road industry should be highly resistent to reflection cracking. The mix must contribute significantly to the stiffness of the pavement, even when it is applied in relatively thin layers. The binder should possess a high softening temperature to reduce the sensitivity for rutting and corrugation, and it should have a reasonable penetration value to minimize the chances of cracking. In this paper attention is paid to the manner SBS polymer modified asphalt binders cope with this set of requirements. The basic principles of this modification are outlined and emphasis is laid on the rheological and mechanical properties: viscosity and penetration test results are presented. Burgers' model for viscoelastic materials is used in an attempt to describe the visco elasticy. Results of indirect tensile tests are reported, including the tensile strengths and the elastic moduli. Repeated loading tests have been done on polymer modified and plain asphaltic concrete mixes. The results are mutually compared concerning fatigue behaviour, elastic moduli and crack propagation characteristics. The paper describes various trial sections, with special attention to comparative tests carried out in an Australian accelerated loading facility.
Book Synopsis Polymer Modified Asphalt Binders by : Kenneth R. Wardlaw
Download or read book Polymer Modified Asphalt Binders written by Kenneth R. Wardlaw and published by ASTM International. This book was released on 1992 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: "ASTM Publication Code Number (PCN) 04-011080-08. - "Sponsored by ASTM Committee D-4 on Road and Paving Materials."-- Foreword. - Includes bibliographical references and indexes. - Electronic reproduction; W. Conshohocken, Pa; ASTM International; 2011; Mode of access: World Wide Web; System requirements: Web browser; Access may be restricted to users at subscribing institutions.
Book Synopsis Asphalt mix design documentation by :
Download or read book Asphalt mix design documentation written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis SBS--polymer Modified Asphalt Binder Post Construction Report by : Alvin L. Austin
Download or read book SBS--polymer Modified Asphalt Binder Post Construction Report written by Alvin L. Austin and published by . This book was released on 1991 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymers in Concrete written by Y. Ohama and published by CRC Press. This book was released on 1997-04-10 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers from international experts from 13 countries. Coverage includes, new developments in the theory and practice of polymer composites, studies of their performance, manufacturing techniques and the material selection process.
Book Synopsis Mix Design Procedures and Considerations for Polymer Modified Asphalt Compatability and Stability by : Thomas William Kennedy
Download or read book Mix Design Procedures and Considerations for Polymer Modified Asphalt Compatability and Stability written by Thomas William Kennedy and published by . This book was released on 1992 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: A five-year study has been performed to investigate the behavior of binders and asphalt mixtures containing polymer modifiers. The polymers were SBS, SBR, EVA, Ground Rubber, and polyolefin. These materials were used separately and in combinations with each other to change the characteristics of the binders and asphalt mixtures. The research included laboratory experiments to characterize the materials, and field projects to ascertain their performance. Four hot mix asphalt projects were conducted in Districts 15, 11, 25, and 10 in Texas, and two seal coat projects were constructed in Districts 6 and 17 in Texas. The testing results of the field and laboratory samples are presented in this report.
Book Synopsis Polymer Modified Asphalt Durability in Pavements by :
Download or read book Polymer Modified Asphalt Durability in Pavements written by and published by . This book was released on 2007 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: The project was designed to develop (1) a better quantitative understanding of the relation between laboratory accelerated binder aging and field aging, (2) a test procedure to measure properties of an aged binder that relate to failure on the road and (3) a proposed specification for estimating the relative durability of binders in the presence of oxidative aging. Tests were conducted on original base and polymer modified binders, laboratory compacted mixtures, and pavement aged binders. The project necessarily evolved to a more comprehensive approach to improving pavement service life.
Book Synopsis Development of a Long-term Durability Specification for Polymer Modified Asphalt by : Won Jun Woo
Download or read book Development of a Long-term Durability Specification for Polymer Modified Asphalt written by Won Jun Woo and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years an increased use of polymers has occurred to modify asphalt binders, mainly to decrease pavement rutting but also to improve binder failure strain in direct tension. Whereas all of these effects positively impact the durability of polymermodified pavements, a need exists to quantify these improvements and the duration in the presence of oxidative aging. This research evaluated the durability of polymer modified asphalt (PMA) through a number of determinations that included the characterization of the original binder property and pavement-aged binder for modified and unmodified binders. Changes in styrene-butadiene-styrene (SBS) polymer modified binder properties from oxidation were analyzed using dynamic shear rheometry, ductility, and force ductility. Previous literature reports using size exclusion chromatography showed that degradation of the molecular weight profile of SBS accompanied the loss of PMA ductility. Yet base binder embrittlement also occurred, as evidenced by ductility and force ductility. Testing aged PMA binders at higher temperatures to soften the base binder restored the polymer modulus to the force ductility measurements as did blending with a softer deasphalted oil. These measurements indicate that the more significant cause of PMA degradation with aging is base binder embrittlement rather than polymer degradation. Sixteen pavements in 11 Texas Districts, plus four MnRoad pavements were evaluated in order to obtain a more detailed profile of binder oxidation in pavements. Slices of each core provided detail on binder oxidation and air voids. The data confirm that binders can oxidize at least several inches into the pavement. However, oxidation also can be significantly slowed, apparently by very low accessible air voids. Interestingly, the data indicate that the air voids that are relevant to the binder at a specific depth of the pavement are those in the immediate vicinity of the binder; low air voids above or below the binder do not seem to significantly affect the binder oxidation rate. Furthermore, that binders oxidize inches below the surface shows that temperature conducts well into the pavement, consistent with a heat conduction model that is used to calculate ground temperatures as a function of depth.
Book Synopsis Solving Problems with Microscopy by : John A. Reffner
Download or read book Solving Problems with Microscopy written by John A. Reffner and published by John Wiley & Sons. This book was released on 2023-11-10 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solving Problems with Microscopy Comprehensive resource, based on real case examples, on the ability of the microscope for solving problems This book takes a “why to” rather than the common “how to” approach to demonstrate the capabilities of microscopy to solve problems. It provides entertaining and informative case examples and lessons regarding the unique value the microscope brings to problem solving by experienced scientists in various industries, including criminal and civil forensic science, manufacturing, environmental science, pharmaceutical science, cultural heritage, and biological sciences. Sample topics covered in this learning resource include: History of problem solving with microscopy Fortune favors the prepared mind The value of multiple associations The importance of context Knowing your limitations (i.e. knowing what you don’t know) Microscopists and other professional scientists who use microscopy can harness the information in this book to make better and more informed decisions by improving their problem-solving strategies and processes.
Book Synopsis The Use of Polymer Modified Asphalt Binder for High Friction Thin Lift Overlays in Connecticut by : Scott Zinke
Download or read book The Use of Polymer Modified Asphalt Binder for High Friction Thin Lift Overlays in Connecticut written by Scott Zinke and published by . This book was released on 2014 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Installation and Laboratory Evaluation of Alternatives to Conventional Polymer Modification for Asphalt by :
Download or read book Installation and Laboratory Evaluation of Alternatives to Conventional Polymer Modification for Asphalt written by and published by . This book was released on 2015 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Virginia Department of Transportation (VDOT) specifies polymer-modified asphalt binders for certain asphalt mixtures used on high-volume, high-priority routes. These binders must meet performance grade (PG) requirements for a PG 76-22 binder in addition to elastic recovery requirements. This typically results in the use of binders containing styrene-butadiene-styrene (SBS) modifiers. However, other polymer modifiers may also be used to achieve the PG 76-22 classification. One of these modifiers is a copolymer of SBS and polyethylene (PE) (SBS-PE) another modifier is ground tire rubber (GTR). This study was undertaken to investigate the suitability of SBS PE modified PG 76-22 binder and GTR-modified PG 76-22 binder for use in Virginia. Each modified binder was used in a 12.5 mm nominal maximum aggregate size mixture to pave approximately 2.3 lane-miles. All mixtures were produced as warm mix asphalt using a foaming system. The binders evaluated included a typical SBS polymer-modified binder as a control and binders modified with SBS-PE and GTR. During construction, all processes were documented and material was sampled for evaluation. Binder and mixture tests were performed. Binder testing included performance grading and multiple stress creep and relaxation testing. Mixture testing included volumetric analysis, dynamic modulus, and flow number tests and cracking, rutting, and fatigue analysis. Binder testing indicated that the control binder and SBS PE modified binders met VDOT specifications for classification as a PG 76-22 binder; the GTR-modified binder graded to a PG 70-22 binder, as it did not meet the PG 76-22 high-temperature specification and did not pass the elastic recovery requirement. Laboratory mixture testing indicated that the performance of the SBS PE modified mixture should be similar to that of the control mixture. Laboratory test results for the GTR-modified mixture were mixed, with some indicating that the performance was similar to that of the control mixture and some indicating that the performance may be less than that of the control. Based on the study, SBS PE modified binders should continue to be allowed as an alternative to SBS-modified binder provided specifications for PG 76-22 binders are met. However, further investigation of GTR-modified binders is suggested before recommendations can be made. In addition, long-term evaluation of the field site is recommended for validation of the laboratory findings.
Book Synopsis Characterization of Polymer Modified Asphalt Binders Containing Processed Oil by : Navid Hemmati
Download or read book Characterization of Polymer Modified Asphalt Binders Containing Processed Oil written by Navid Hemmati and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current study investigates the impact of processed oil on asphalt binder PG 64-22 and conjugate of it with common modifiers such as Crumbed Rubber Modifier (CRM), Styrene-Isoprene-Styrene (SIS), Styrene-Butadiene-Styrene (SBS) and Petroleum Resin (PE). The binder was tested at different temperatures, and different amounts of modifiers and processed oil were added to the binder. The modified binders were also aged artificially using different procedures. The study found that adding processed oil to polymer modified binders reduces viscosity and improves workability, while the modifiers improve the rutting resistance of them, however, the addition of processed oil reduces the binder's rutting performance due to decrement of viscosity. The study also found that the conjugating of modifying polymers and processed oil improves the low temperature cracking resistance. The study's results indicate that co-modifying polymer binders with processed oil resulted in a significant reduction in viscosity values, resulting in improved workability. The results also showed that increasing the processed oil concentration from 6% to 12% caused a viscosity reduction in conjugation of CRM, SIS, SBS and PE. Even though the addition of processed oil results in a reduction in the rutting performance of asphalt binder, the addition of polymers significantly improved the rutting resistance of asphalt binders. The modified asphalt binders containing 6% and 12% processed oil decreased the G*sin ð values. This reduction caused improvement of fatigue cracking resistance of all binders modified with CRM, SIS, SBS and PE. The higher concentration of processed oil means 12% showed greater reduction rate compared to the asphalt binders containing 6% processed oil. The BBR results for modified asphalt binders showed that the incorporation of CRM, SIS, SBS and PE and processed oil improved the low temperature cracking resistance significantly, due to the high penetration rate of processed oil in asphalt binders during modification.
Book Synopsis Rheological Properties of Polymer-Modified Binders for Use in Rolled Asphalt Wearing Course by : J.C. Nicholls
Download or read book Rheological Properties of Polymer-Modified Binders for Use in Rolled Asphalt Wearing Course written by J.C. Nicholls and published by Thomas Telford. This book was released on 1999-02-10 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Executive Summary - Introduction - The binder test programme - Relationships between empirical and dynamic tests - Bituminous mixture test programme - Relationships between binder properties and mixture deformation resistance - Relationships between binder properties and resistance to cracking - In situ deformation results - conclusions - Acknowledgements - References - Appendix A: Glossary of rhelogical tems - Appendix B: The viscoelastic response of bitumen - Abstract - Related publications
Book Synopsis Reflective Cracking in Pavements by : L. Francken
Download or read book Reflective Cracking in Pavements written by L. Francken and published by CRC Press. This book was released on 2004-06-02 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of RILEM TC-PRC third conference on this subject. Papers from road authorities, engineers, researchers, contractors and manufacturers discussing the implementation and the long term behaviour of overlay systems. The following topics are covered: prevention and cracking assessment, choice and design of overlay systems, practical implemen
Book Synopsis Effect of Polymer Modification on the Properties of Asphalt Concrete by : Alekh S. Bhurke
Download or read book Effect of Polymer Modification on the Properties of Asphalt Concrete written by Alekh S. Bhurke and published by . This book was released on 1999 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Durability and Performance Characteristics of Hot Mix Asphalt Containing Polymer Additives by : Robert Y. Liang
Download or read book Durability and Performance Characteristics of Hot Mix Asphalt Containing Polymer Additives written by Robert Y. Liang and published by . This book was released on 2001 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ohio Department of Transportation has adopted the hot mix asphalt concrete containing polymer modifiers for use in the interstate highway pavement. Among the various reasons cited for the adoption of polymer modifiers are the favorable field experiences by ODOT, extensive literatures reporting enhanced performance, such as rutting resistance, low temperature thermal cracking resistance, and possibly fatigue endurance. However, despite these favorable findings, there are still cases involving premature failure of hot mixtures containing polymer modifiers. Concerns regarding optimum polymer content, compatibility between polymer additives and asphalt cement, proper mixing and compaction procedure remain to be resolved. Furthermore, performance based specifications to ensure production of desirable final asphalt concrete product require additional development. Questions regarding the suitability of Superpave binder testing procedures for the polymer-modified binders need to be clarified.
Book Synopsis Characterization of Modified Asphalt Binders in Superpave Mix Design by : Hussain U. Bahia
Download or read book Characterization of Modified Asphalt Binders in Superpave Mix Design written by Hussain U. Bahia and published by . This book was released on 2001 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
