Download or read book Evaluation of Rutting Resistance of Superpave and Hveem Mixtures written by Peter E. Sebaaly and published by . This book was released on 2000 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Rutting Resistance of Superpave and HVEEM Mixtures Introduction and background written by Peter E. Sebaaly and published by . This book was released on 2000 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Rutting Resistance of Superpave and HVEEM Mixtures Impact of aggregate gradations written by Peter E. Sebaaly and published by . This book was released on 2000 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Rutting Resistance of Superpave and HVEEM Mixtures Impact of gyratory compaction written by Peter E. Sebaaly and published by . This book was released on 2000 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance of Superpave and HVEEM Sections in Nevada written by and published by . This book was released on 2003 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Preliminary Evaluation of Superpave Level One Mix Design Procedure written by Khaled Ksaibati and published by . This book was released on 1998 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to compare the Superpave mix design to the Marshall mix design on a typical aggregate source in Wyoming. The comparison concentrated on the resistance to rutting and low-temperature cracking of asphalt mixes prepared using the two design methods. Chapter 1 of this report provides an introduction. Chapter 2 contains a literature review related to the Marshal and Hveem mix design methods in addition to the newer Superpave level one mix design method. Chapter 3 describes the design of the experiment including information about the materials used in the study, the Marshall and Superpave level one mix designs, and the accelerated testing devices used in the study. Results from the Marshall and Superpave mix designs are summarized in Chapter 4. Chapter 5 contains the Georgia Loaded Wheel Tester and Thermal Stress Restrained Specimen Tester accelerated testing results on the Marshall and Superpave samples. Conclusions and recommendations based on the study are presented in Chapter 6.
Download or read book Relationship Between Laboratory Mix Properties and Rutting Resistance for Superpave Mixtures written by Sylvester Ampadu Asiamah and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT (cont.): Analysis of test results in this study indicate that excessive asphalt binder may have been used in order to meet the voids in mineral aggregates (VMA) criteria for the poor performing mixtures. This finding may be consistent with other related findings that suggest that for some coarse graded aggregate structures, addition of so much asphalt binder may be necessary to meet the current Superpave VMA specification. The VMA requirement should, therefore, be reviewed. It is also found in this study that for mixtures with excessive asphalt binder the aggregate structure may not significantly affect the rutting resistance of the mixture. This may be the case because the asphalt binder tends to have a predominant influence, especially at higher temperatures, reduces the aggregate particle interaction in the mixture and, therefore, leads to poor rutting performance. The study finds that there may be apparent relationships between rutting resistance of mixtures and the following laboratory measured parameters: (1) the rate of change of gyratory shear per cycle measured from the slope of the gyratory shear versus number of cycles (semi-logarithm scale) in the Servopac Gyratory Compactor, (2) the rut depth measured in the Asphalt Pavement Analyzer and (3) the gyratory stability index measured from the Gyratory Testing Machine.
Download or read book Performance Evaluation of Fine Graded Superpave Mixtures for Surface Courses written by N. Pau Khosla and published by . This book was released on 2001 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strategic Highway Research Program (SHRP) A407 recommends that aggregate gradations pass below the restricted zone as traffic level increases. This study investigated the use of natural sand in the fine and coarse gradations for the surface course mixtures. The mixtures were designed using the SUPERPAVE mix design approach and were evaluated for their performance in terms of resistance to rutting, fatigue and moisture damage. In addition, the accelerated performance of these mixtures was also evaluated using the Asphalt Pavement Analyzer.
Download or read book Superpave Mix Design written by Asphalt Institute and published by . This book was released on 2001-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Implementation of Superpave Mix Design and Analysis Procedures for the State of Nevada written by and published by . This book was released on 2005 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Cracking Resistance of Superpave Mixtures in Kansas written by Syeda Rubaiyat Aziz and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Reclaimed Asphalt Pavement (RAP) is a useful alternative to virgin aggregates in hot-mix asphalt (HMA) as it reduces cost, conserves energy, and enables reuse of existing asphalt pavement. However, use of higher percentage of RAP sometimes leads to drier mixes that are often susceptible to early cracking. In this study, cracking resistance of Superpave mixtures with varying asphalt and RAP contents were investigated. HMA specimens were prepared based on Superpave mix design criteria for 12.5-mm (1/2-inch) nominal maximum aggregate size (NMAS). Specimens were compacted using the Superpave gyratory compactor. Static and repeated semi-circular bending (SCB) tests and Texas overlay tests (OT) (TEX-248-F) were performed in order to evaluate cracking resistance of Superpave mixtures containing three different asphalt contents (5.2%, 4.9%, and 4.6%) and three RAP percentages (20%, 30%, and 40%) from two distinct sources. Results from both crack tests showed that, with decreased asphalt content, cracking propensity increases. In general, higher percentage of RAP decreases cracking resistance. Statistical analysis of the results indicated a strong positive correlation between the asphalt film thickness and the number of load cycles before failure. Comparison of mean test results suggested that the Texas overlay test could do better evaluation of cracking resistance than the R-SCB test. This study was limited to mixtures with two sources of RAP. Because of such limitations and conflicting results from these RAP sources, a general conclusion regarding the minimum binder and maximum RAP contents without compromising cracking resistance could not be made. However, separate conclusions were drawn depending upon the characteristics of the RAP source.
Download or read book Evaluation of Superpave Shear Test Protocols written by Arif Chowdhury and published by . This book was released on 2002 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study is to evaluate four selected Superpave shear test protocols and determine which of the test protocols is most suitable for predicting asphalt pavement performance. The predominant pavement performance of interest herein is rutting. So, the ultimate goal is to identify the "best" Superpave shear tester (SST) test protocol that can evaluate the shearing resistance of HMA. Researchers selected or developed four different mixtures from very poor to excellent quality using materials from Texas and Georgia. The HMA mixtures selected for this study were: Type C limestone, Type D rounded river gravel, granite stone mastic asphalt (SMA), and granite Superpave. Rutting performance of these mixtures was evaluated using four SST protocols: Frequency Sweep at Constant Height (FSCH), Simple Shear at Constant Height (SSCH), Repeated Shear at Constant Height (RSCH), and Repeated Shear at Constant Stress Ratio (RSCSR).
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:
Download or read book The Modern Asphalt Pavement written by Clifford Richardson and published by . This book was released on 1913 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymer Modified Bitumen written by Tony McNally and published by Elsevier. This book was released on 2011-09-15 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The addition of polymers to bitumen allows the modification of certain physical properties, such as softening point, brittleness and ductility, of the bitumen. Polymer modified bitumen: Properties and characterisation provides a valuable and in-depth coverage of the science and technology of polymer modified bitumen. After an initial introduction to bitumen and polymer modified bitumen, the book is divided into two parts. Chapters in part one focus on the preparation and properties of a range of polymer modified bitumen, including polymer bitumen emulsions, modification of bitumen with poly (urethanes), waste rubber and plastic and polypropylene fibres. Part two addresses the characterisation and properties of polymer modified bitumen. Chapter topics covered include rheology, simulated and actual long term ageing studies; the solubility of bituminous binders in fuels and the use of Fourier transform infrared spectroscopy to study ageing/oxidation of polymer modified bitumen. Polymer modified bitumen is an essential reference for scientists and engineers, from both academia and the civil engineering and transport industries, interested in the properties and characterisation of polymer modified bitumen. Provides a comprehensive and in-depth coverage of the science and technology of polymer modified bitumen Focuses on the preparation and properties of a range of polymer modified bitumen, including emulsions, modification of bitumen with poly(urethanes), waste rubber and plastic as well as polypropylene fibres Addresses the characterization and properties of polymer modified bitumen, including rheology, simulated and actual long term ageing studies, and the solubility of bituminous binders in fuels
Download or read book Contributions of Pavement Structural Layers to Rutting of Hot Mix Asphalt Pavements written by Thomas D. White and published by Transportation Research Board. This book was released on 2002 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recommendations for Reducing Superpave Compaction Effort to Improve Mixture Durability and Fatigue Performance written by and published by . This book was released on 2006 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
