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.

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.

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.

Download or read book Effect of Crumb Rubber Particle Size and Concentration on Performance Grading of Rubber Modified Asphalt Binders written by Bijal Bhupendra Vyas and published by . This book was released on 1997 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book A Review of Crumb rubber Modified Asphalt Concrete Technology written by A. T. Papagiannakis and published by . This book was released on 1995 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crumb Rubber in Performance graded Asphalt Binder written by Wayne Gale Jensen and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book High Temperature Viscosity Performance of Crumb Rubber Modified Binder With Warm Mix Asphalt Additives written by Hainian Wang and published by . This book was released on 2012 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of crumb-rubber modifier (CRM) in asphalt mixtures has been proven to increase the viscosity of CRM binders. In recent years, warm mix asphalt (WMA) additives have been employed to CRM binders to lower their viscosity at high temperatures, allowing a decrease in the mixing and compaction temperatures. The objective of this research is to investigate the viscosity and storage stability of rubberized WMA binders with different tire rubber concentrations and WMA additives. The tire rubber of 40-mesh, with concentrations of 10 %, 15 %, 20 %, and 25 % by weight of a Superpave performance grade (PG) 64-22 asphalt binder, were used in this study along with the WMA additives, such as Sasobit, RH and Advera. Viscosity tests were conducted on the rubberized WMA binders using the rotational viscometer at four temperatures (135, 160, 177, and 190°C). The statistical analysis of variance (ANOVA) was applied to quantify the respective effects of the influencing factors on the CRM binder's viscosity. The test results indicated that the addition of crumb rubber could greatly increase the viscosity of asphalt binders, which could be improved continuously at increased crumb-rubber concentrations. However, when considering different WMA additives, the crumb rubber showed different effects on the viscosity of the binder. The three WMA additives could all reduce the viscosity of the CRM binder; in addition, RH had the most significant effect on viscosity reduction. It was also found that the CRM binders with WMA additives had good storage stability. For example, the viscosity of the CRM binder with 10 % rubber concentration and RH only increased by 3.8 % after being stored for 4.5 h.

Download or read book Proceedings of the 9th International Conference on Maintenance and Rehabilitation of Pavements Mairepav9 written by Christiane Raab and published by Springer Nature. This book was released on 2020-06-19 with total page 955 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the proceedings of an international conference held at Empa (Swiss Federal Laboratories for materials Science and Technology) in Dübendorf, Switzerland, in July 2020. The conference series was established by the International Society of Maintenance and Rehabilitation of Transport Infrastructure (iSMARTi) for promoting and discussing state-of-the-art design, maintenance, rehabilitation and management of pavements. The inaugural conference was held at Mackenzie Presbyterian University in Sao Paulo, Brazil, in 2000. The series has steadily grown over the past 20 years, with installments hosted in various countries all over the world. The respective contributions share the latest insights from research and practice in the maintenance and rehabilitation of pavements, and discuss advanced materials, technologies and solutions for achieving an even more sustainable and environmentally friendly infrastructure.

Download or read book Evaluation of Performance on Crumb Rubber Modified Asphalt Mixture written by Yuming Dong and published by . This book was released on 2012 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper investigates the performance of crumb-rubber-modified (CRM) asphalt mixture. Two different asphalt mixtures containing two types of asphalt binder (#90 original asphalt and CRM asphalt) were used to prepare Marshall specimens and determine optimum asphalt content. Mechanical performances of asphalt mixes were evaluated by the wheel rutting test (WRT) (dynamic stability (DS)), midpoint beam bend test (MBBT), at low temperature, and indirect tensile test (IDT), at the freezing and thawing cycle. Superpave gyratory compactor (SGC) specimens were also prepared for the modulus test. Using the simple performance test (SPT) and universal testing system (UTS), viscoelastic mechanical characteristics were evaluated by static and dynamic modulus tests. Static modulus (E) data were measured by the un-confinement uniaxial compression test according to the specification of China. Moreover, dynamic modulus (E0) data were obtained by SPT. The crumb-rubber content varies from 0, 10 %, 20 %, to 30 % at the static modulus test. Two test temperatures were selected for the dynamic modulus test. The results indicated that the CRM asphalt mixture performs better than the standard asphalt mixture on dynamic behavior, rutting resistance, cracking resistance, and moisture stability.

Download or read book Chemical Physical and Thermodynamic Properties of Neat and Polymer Modified Asphalt Binders written by Lawrence Michael France and published by . This book was released on 1997 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Novel Parametric Approach to Characterize Crumb Rubber Modified Asphalt Binder Performance Based on Parallel Plate Dynamic Shear Rheometry written by Anas Ahmad Jamrah and published by . This book was released on 2018 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progress of Superpave superior Performing Asphalt Pavement written by Robert N. Jester and published by ASTM International. This book was released on 1997 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: A major result of the research conducted under the Strategic Highway Research Program from 1987 to 1993 was the development of the Superpave (Superior Performing Asphalt Pavement) system for the comprehensive design of asphalt pavements. These 14 contributions describe the experience to date in the

Download or read book Performance and Sustainability based Analysis of Different Crumb Rubber Modified Asphalt Mixtures written by Berkay Tascioglu and published by . This book was released on 2013 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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: