Rheological Properties Of Asphalt Binders Performance And Sustainability Of Warm Mix Asphalt Incorporating Sasobit PDF Download
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Author | : Ali Jamshidi |
Publisher | : |
Total Pages | : 734 |
Release | : 2013 |
Genre | : Asphalt |
ISBN | : |
Download Rheological Properties of Asphalt Binders, Performance and Sustainability of Warm-mix Asphalt Incorporating Sasobit Book in PDF, ePub and Kindle
Author | : Hainian Wang |
Publisher | : |
Total Pages | : 11 |
Release | : 2012 |
Genre | : Burgers model |
ISBN | : |
Download Analysis of the Low-Temperature Rheological Properties of Rubberized Warm Mix Asphalt Binders Book in PDF, ePub and Kindle
Warm mix asphalt (WMA) has generated a lot of interest worldwide based on the potential to realize environmental benefits related to lower production temperature and safe disposal of crumb rubber (tires). However, barriers to complete implementation of WMA technology still exist because of the lack of understanding of how different additives affect the performance of crumb rubber modified (CRM) binders. This paper investigates the effects of three WMA additives and crumb rubber concentration on the low-temperature performance of the CRM binders. The WMA additives used in this study were Sasobit, RH, and Advera, and the ambient 40 mesh tire rubber at different concentrations of 10 %, 15 %, 20 %, and 25 % by the weight of asphalt binder were applied in this paper. Burgers model was used to describe the relationship between deformation and time for rubberized WMA binder. The models parameters such as relaxation time, delay time, creep stiffness, m-value and m/S(t)-ratio were applied to evaluate the low-temperature performance of the rubberized WMA binders. Furthermore, the statistical analysis of variance (ANOVA) technique was applied to quantify the effects of different WMA additives and crumb rubber concentrations on the rubberized asphalt binders' low-temperature performance. It was found that Advera could be used to enhance the low-temperature performance by enhancing the stress relaxation, whereas RH and Sasobit did not exhibit this ability, thereby weakening the low-temperature performance of the CRM binders. The crumb rubber concentration could significantly increase the rubberized WMA binders' low-temperature performance by influencing the flexural creep stiffness of the control binders.
Author | : Douglas M. Marshall |
Publisher | : CRC Press |
Total Pages | : 1944 |
Release | : 2015-10-26 |
Genre | : Political Science |
ISBN | : 113802693X |
Download Introduction to Unmanned Aircraft Systems, Second Edition Book in PDF, ePub and Kindle
The proliferation of technological capability, miniaturization, and demand for aerial intelligence is pushing unmanned aerial systems (UAS) into the realm of a multi-billion dollar industry. This book surveys the UAS landscape from history to future applications. It discusses commercial applications, integration into the national airspace system (NAS), System function, operational procedures, safety concerns, and a host of other relevant topics. The book is dynamic and well-illustrated with separate sections for terminology and web- based resources for further information.
Author | : |
Publisher | : |
Total Pages | : 144 |
Release | : 1996 |
Genre | : Asphalt |
ISBN | : |
Download Characteristics of Asphalt Binders Book in PDF, ePub and Kindle
Author | : Shivani Rani |
Publisher | : |
Total Pages | : 16 |
Release | : 2020 |
Genre | : Asphalt |
ISBN | : |
Download Laboratory Characterization of Asphalt Binders Containing a Chemical-Based Warm Mix Asphalt Additive Book in PDF, ePub and Kindle
Different technologies, namely foamed asphalt, synthetic waxes, zeolites, and chemical additives, are used to produce warm mix asphalt (WMA). This study was undertaken to evaluate the effect of using different amounts of an amine-based chemical WMA additive on the rheology, performance grade (PG), and moisture-induced damage potential of an asphalt binder (PG 58-28). Superpave specifications were used to evaluate the rheological properties and PG of the asphalt binder. Also, a mechanistic approach-based on the surface free energy (SFE) method was used to evaluate the moisture-induced damage potential of the asphalt binder combined with commonly used aggregates in an asphalt mix. It was found that the dynamic viscosity of the asphalt binder was not significantly affected after blending it with the WMA additive. It was also observed that the Superpave high-temperature PG and the rutting factor did not reduce by an increase in the WMA additive content. However, the continuous low-temperature PG of the asphalt binder decreased with an increase in the amount of WMA additive. Furthermore, it was found that the fatigue resistance increased after blending the binder with the WMA additive. The SFE results of the asphalt binder revealed that the WMA additive used in this study reduced the moisture-induced damage potential of the asphalt mixes. However, the extent of this improvement was found to largely depend on the aggregate type. The outcomes of this study are expected to help better understand the influence of amine-based chemical WMA additives on rheological and long-term performance of asphalt mix.
Author | : Patrick Lavin |
Publisher | : CRC Press |
Total Pages | : 463 |
Release | : 2003-09-02 |
Genre | : Architecture |
ISBN | : 1482267713 |
Download Asphalt Pavements Book in PDF, ePub and Kindle
Asphalt Pavements provides the know-how behind the design, production and maintenance of asphalt pavements and parking lots. Incorporating the latest technology, this book is the first to focus primarily on the design, production and maintenance of low-volume roads and parking areas.Special attention is given to determining the traffic capacity, re
Author | : John C. Hardin |
Publisher | : ASTM International |
Total Pages | : 237 |
Release | : 1995 |
Genre | : Asphalt cement |
ISBN | : 0803119887 |
Download Physical Properties of Asphalt Cement Binders Book in PDF, ePub and Kindle
A dozen papers from a December 1993 symposium in Dallas/Fort Worth, Texas. Among the topics are why the new proposed rheological properties of asphalt binders are required and how they compare to conventional properties, the development and use of the SHRP direct tension specification test, oxidatio
Author | : Zelalem Alebel Arega |
Publisher | : |
Total Pages | : 242 |
Release | : 2014 |
Genre | : |
ISBN | : |
Download Characteristics of Foamed Asphalt Binders for Warm Mix Asphalt Applications Book in PDF, ePub and Kindle
An increase in environmental awareness and energy concerns had recently prompted efforts to make pavement construction cheaper and more environmentally friendly. Warm mix asphalt (WMA) is an asphalt mixture production technology that promises to reduce production costs and greenhouse gas emissions. Foamed asphalt binder is increasingly being used to produce WMA. This dissertation addresses several issues related to the use of foamed asphalt binder for WMA applications. The first objective of the research presented in this dissertation is to develop a method and metrics to precisely quantify the characteristics of asphalt binder foams. Laboratory measurements were obtained using the newly developed method to evaluate the extent and stability of foams produced using different asphalt binders at different water contents and laboratory foaming devices. Results demonstrate that the method developed is promising in terms of its ability to provide a detailed history of the behavior of foamed asphalt binder as the foam collapses. In addition, results indicate that the method is sensitive to distinguish between foaming characteristics of different asphalt binders as well as different water contents and foaming devices. The second objective of this study was to relate intrinsic properties of the asphalt binder to its foaming characteristics. A physical model was developed for expansion of asphalt binder foam based on foam physics and fluid mechanics of micro-droplets. The model relates foamant water and asphalt binder mixing efficiency with the surface tension of the asphalt binder. The model can be used to predict which binder can be effectively foamed and used, and whether any chemical modification to the binder is necessary to achieve the same. Results indicate that only a small percentage of water is effective in foaming the asphalt binder. The last objective of this research was to evaluate the influence of foaming on asphalt binder residues and mixture workability and coatability. The influence of foaming process on the rheological properties of asphalt binder residue was investigated. In addition, the significance of foamed asphalt binder characteristics on mixture workability and coatability was evaluated. Results from this last part of the study can be used to optimize binder foaming such that the resulting mixture is coated and compacted without compromising performance.
Author | : Zelalem Arega |
Publisher | : |
Total Pages | : 39 |
Release | : 2012 |
Genre | : Asphalt concrete |
ISBN | : |
Download Binder Rheology and Performance in Warm Mix Asphalt Book in PDF, ePub and Kindle
Since the introduction of warm mix asphalt (WMA) in the United States, a variety of different technologies and processes have been developed and used to achieve proper mixing and compaction at reduced temperatures compared to conventional hot mix asphalt (HMA). A better understanding of the effect of WMA additives and reduced aging on the rheology of asphalt binders is a crucial step towards the successful implementation of WMA. This report presents the findings from a study conducted to investigate the influence of chemical WMA additives and reduced short-term aging on the properties of asphalt binders, mortars, and mixtures. This report presents the details of the test methods and findings relevant to mortars and mixtures prepared using warm mix additives.
Author | : Ahmad Raad Hassan |
Publisher | : |
Total Pages | : 79 |
Release | : 2014 |
Genre | : Asphalt |
ISBN | : |
Download Determination of Rheological Properties of Modified Asphalt Binder Incorporating with Sasobit Additive Book in PDF, ePub and Kindle