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Material Characterization Of Crumb Rubber Modified Binders And Dense Graded Hma
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Book Synopsis Material Characterization of Crumb Rubber Modified Binders and Dense Graded HMA by : Gregory Martin Duncan
Download or read book Material Characterization of Crumb Rubber Modified Binders and Dense Graded HMA written by Gregory Martin Duncan and published by . This book was released on 1997 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Simple and Complex Crumb Rubber Modified Binders by : Ssu-Wei Loh
Download or read book Characterization of Simple and Complex Crumb Rubber Modified Binders written by Ssu-Wei Loh and published by . This book was released on 2000 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Rubberized Binders with Wax Additives by : Hyunhwan Kim
Download or read book Characterization of Rubberized Binders with Wax Additives written by Hyunhwan Kim and published by . This book was released on 2016 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crumb rubber is widely used as an environment-friendly material in asphalt industry to improve pavement performance properties. Warm mixture asphalt (WMA) refers to the technologies which allow a substantial reduction of mixing and compaction temperatures of asphalt mixtures through decreasing the viscosity of asphalt binders. In general, the crumb rubber modified (CRM) asphalt mixes require higher temperatures compared to conventional hot mix asphalt (HMA). However, if the technologies of WMA are incorporated, it is predicted to reduce the mixing and compaction temperatures of rubberized asphalt mixtures. For utilization of rubberized mixes in WMA industry, it is needed to investigate the properties of CRM binders with warm additives depending on CRM contents, additive types, aging states, and other experiment variables. This research investigated CRM binders with wax warm additives, and the objectives included: 1) quantifying viscosity changes dependent upon mixing temperature and hauling period through Rotational viscometer test; 2) evaluating the effect of blending time on viscosity; 3) investigating the performance properties of recycled aged CRM binders containing wax additives through Superpave binder tests; 4) evaluating the microstructural properties using an environmental scanning electron microscope (ESEM) and an atomic force microscopy (AFM). The following conclusions were drawn based on the comprehensive laboratory investigation: 1) crumb rubber contents and wax types were found to have significant influence on the viscosity properties of CRM binders; 2) CRM binder with wax additive (LEADCAP) showed better rutting and cracking resistance compared to the control CRM binder for all aging states; 3) the wax additive in recycled CRM binder is observed to play an important role in binder properties even after subjecting to long-term aging processes; 4) the microstructures on morphology images seemed to have a good relation with the engineering properties of warm CRM 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:
Download or read book Crumb Rubber Modifier written by and published by . This book was released on 1993 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Section 1038 of the Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) contains provisions for each State to begin incorporating scrap tire rubber into their asphalt paving materials. A workshop was developed through the cooperation of highway agencies and the asphalt industry to discuss present procedures and practices for designing and constructing asphalt pavements which incorporate scrap tire rubber (crumb rubber modifier). These workshop notes were prepared from the proceedings of the 13 workshop sessions.
Book Synopsis Mixture Desigh [sic] and Performance Prediction of Rubber-modified Asphalt in Ohio by : Robert Y. Liang
Download or read book Mixture Desigh [sic] and Performance Prediction of Rubber-modified Asphalt in Ohio written by Robert Y. Liang and published by . This book was released on 1998 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mixture design and performance characteristics of crumb rubber modified asphalt concretes were investigated in this research project to meet the requirements of the Intermodal Surface Transportation Efficiency Act (ISTEA) of 1991, which has required each State to incorporate scrap tire rubber into its asphalt paving materials. Specifically, the objectives of this research encompass the following: (i) investigation of the rheological properties of asphalt-rubber binder to determine optimum content of crumb rubber; (ii) development of optimum mix design for various applications, including both wet and dry mix processes; (iii) characterization of mechanical properties of recommended paving mixtures, including resilient modulus, fatigue cracking behavior, low-temperature thermal cracking resistance, water sensitivity test, incremental creep test and loaded wheel track test; and (iv) comparison of performance of selected paving mixes.
Book Synopsis Long and Deep Tunnels by : Vittorio Guglielmetti
Download or read book Long and Deep Tunnels written by Vittorio Guglielmetti and published by CRC Press. This book was released on 2016-04-15 with total page 1336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and construction of “long and deep” tunnels, i.e. tunnels under mountains, characterised by either considerable length and/or overburden, represent a considerable challenge. The scope of this book is not to instruct how to design and construct such tunnels but to share a method to identify the potential hazards related to the process of designing and constructing long and deep tunnels, to produce a relevant comprehensive analysis and listing, to quantify the probability and consequences, and to design proper mitigation measures and countermeasures. The design, developed using probabilistic methods, is verified during execution by means of the so called Plan for Advance of the Tunnel (PAT) method, which allows adapting the design and control parameters of the future stretches of the tunnel to the results of the stretches already finished, using the monitoring data base. Numerous criteria are given to identify the key parameters, necessary for the PAT procedure. Best practices of excavation management with the help of real time monitoring and control are also provided. Furthermore cost and time evaluation systems are analysed. Finally, contractual aspects related to construction by contract are investigated, for best development and application of models more appropriate for tunnelling-construction contracts. The work will be of interest to practising engineers, designers, consultants and students in mining, underground, tunnelling, transportation and construction engineering, as well as to foundation and geological engineers, urban planners/developers and architects.
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:
Book Synopsis Characterization of Low Temperature Crack Resistance of Crumb Rubber Modified Asphalt Mixtures Using Semi-Circular Bending Tests by : Hainian Wang
Download or read book Characterization of Low Temperature Crack Resistance of Crumb Rubber Modified Asphalt Mixtures Using Semi-Circular Bending Tests written by Hainian Wang and published by . This book was released on 2016 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to assess the low temperature anti-cracking performance of crumb rubber modified asphalt mixtures by performing the semi-circular bending tests. The flexural tensile strength, fracture energy density, and fracture resistance were used to evaluate the rubber modified asphalt mixture's performance based on fracture mechanics J-integral concept. The semi-circular bending (SCB) tests were conducted to study the effect of crumb rubber dosage, crumb rubber size, and testing temperature on the low temperature anti-cracking performance of rubber modified asphalt mixtures. Two gradations (a dense gradation mixture and a gap-gradation mixture) were selected, and five rubber application dosages (15, 18, 20, 22, and 25 %, all by the weight of base binder) were studied in the paper. The tests were performed at temperatures of 0, -10, and -20°C. The testing results indicated that the flexural tensile strength and fracture energy density increased initially, reached to a peak point and then decreased with the increase of rubber dosage. Flexural tensile strength and fracture energy density reached its maximum value at the 20 % rubber dosage among the five rubber application dosages. The flexural tensile strength, fracture energy density, and the J-integral fracture toughness of the gap-graded rubber asphalt mixture specimens were higher than those of the dense gradation. The smaller sized particle rubber modified mixture provided a better low temperature anti-cracking performance as compared to those with bigger particle sizes. Through the comprehensive consideration of laboratory test results and field results, it was recommended that the J-integral fracture toughness should be no less than 2.8 KJ/m2 for new asphalt rubber pavement in Shannxi province.
Book Synopsis Pavement Cracking by : Imad L. Al-Qadi
Download or read book Pavement Cracking written by Imad L. Al-Qadi and published by CRC Press. This book was released on 2008-07-30 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt: Internationally, much attention is given to causes, prevention, and rehabilitation of cracking in concrete, flexible, and composite pavements. The Sixth RILEMInternational Conference on Cracking in Pavements (Chicago, June 16-18, 2008) provided a forum for discussion of recent developments and research results.This book is a collection of papers fr
Book Synopsis PRO 37: 5th International RILEM Conference on Cracking in Pavements – Mitigation, Risk Assessment and Prevention by : C. Petit
Download or read book PRO 37: 5th International RILEM Conference on Cracking in Pavements – Mitigation, Risk Assessment and Prevention written by C. Petit and published by RILEM Publications. This book was released on 2004 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Materials-related Forensic Analysis and Special Testing, Pennsylvania Department of Transportation by : Michael Boyle
Download or read book Materials-related Forensic Analysis and Special Testing, Pennsylvania Department of Transportation written by Michael Boyle and published by . This book was released on 2003 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report relates to the use of Superpave 4.75mm Nominal Maximum Aggregate Size (NMAS) mixtures. This NMAS mixture suitability for thin overlay applications, such as those less than 40mm in depth, workability, and positive appearance throughthe minimization of segregation are the desirable qualities of this HMA mix. Current AASHTO standards and specifications for Superpave do not include Superpave 4.75mm NMAS mixtures. In this study, the Department chooses to analyze three 4.75mm NMAS HMA mixture that were developed using the Superpave volumetric mix design method and one PENNDOT ID-2 Wearing Course mixture developed using the Marshall mix design method. The three 4.75mm mixtures include a control (dense-graded) mixture; a mixture containing crumb-rubber additive; and a mixture containing crumb-rubber additive in combination with Vestenamer, a proprietary asphalt/crumb rubber modifier manufactured by DeGussa.
Book Synopsis Efficient Transportation and Pavement Systems: Characterization, Mechanisms, Simulation, and Modeling by : Imad L. Al-Qadi
Download or read book Efficient Transportation and Pavement Systems: Characterization, Mechanisms, Simulation, and Modeling written by Imad L. Al-Qadi and published by CRC Press. This book was released on 2008-11-01 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt: Internationally, significant attention is given to transport sustainability including planning, design, construction, evaluation, safety and durability of the road system. The 4th International Gulf Conference on Roads: Efficient Transportation and Pavement Systems - Characterization, Mechanisms, Simulation, and Modeling, hosted by the University o
Book Synopsis High-cure Crumb Rubber Modified Asphalt for Dense-graded Mixes by : Charles J. Glover
Download or read book High-cure Crumb Rubber Modified Asphalt for Dense-graded Mixes written by Charles J. Glover and published by . This book was released on 2001 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Asphalt Paving Technology by : Carl L. Monismith
Download or read book Asphalt Paving Technology written by Carl L. Monismith and published by McGraw-Hill Companies. This book was released on 1997-06 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on asphalt paving technology, this work emphasizes quality control and quality assurance programmes in producing high-quality pavements. It combines theory and practice of asphalt paving including developments and information from the recently completed Strategic Highway Research Program which was designed to improve asphalt specifications, mix design and analysis systems.
Book Synopsis Rheology of Crumb Rubber Modified Asphalt Binder and Mixes by : Vikas Rameshchandra Sheth
Download or read book Rheology of Crumb Rubber Modified Asphalt Binder and Mixes written by Vikas Rameshchandra Sheth and published by . This book was released on 1997 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a Crumb Rubber Modified (CRM) Asphalt Concrete Mix Design by : Mustaque Hossain
Download or read book Development of a Crumb Rubber Modified (CRM) Asphalt Concrete Mix Design written by Mustaque Hossain and published by . This book was released on 1995 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project was to develop an asphalt mix design method incorporating crumb rubber and using the "Wet" or "Dry" method of producing Crumb Rubber Modified Asphalt (CRM). Several resurfacing projects have been constructed using both the "Wet" and "Dry" methods. Based on this study, the Kansas Department of Transportation could use CRM mixes with a binder content between 7.5% and 9.0% depending on the percent air voids, with 19% to 22% rubber content. In this study, it was observed that using 24% rubber produced mixes that were too sticky to manage. With a rubber content of less than 18% combined with AC-5 it was difficult to satisfy the minimum viscosity requirements. Fracture tests can be used as a basis to determine the optimum binder content for any asphalt-rubber mix.
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