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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"Asphalt Binders"”.
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Incorporating Recycled Plastics in Asphalt Binders and Mixtures
… nature, the addition of plastic makes the asphalt binder and asphalt mixture stiffer - the incorporation of plastic shifts the performance grade temperature of asphalt binder and plastic blends towards the warmer side. The development of compatibilizers mitigated the drawbacks caused by …
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Characterization of Polymer Modified Asphalt Binders Containing Processed Oil
… 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 …
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Laboratory Evaluation of Storage Stability for CRM Asphalt Binders
… order to evaluate the properties of each part of binders, tests were carried out through the rotational viscosity and viscoelasticity, and the separation index (SI) was assessed with the G*/sin δ and % rec. In general, the results of this study revealed that (1) the conditioned CRM binders are …
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Development of Antioxidant Treatments for Asphalt Binders and Mixtures
… need for more effective antioxidants to control asphalt age-hardening, eight additives were evaluated based on their potential to reduce age-hardening in asphalts. The selected additives were used to modify a PG 64-22 asphalt binder in the laboratory. The modified binders were subjected to …
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LCA: A Tool to Study Feasibility and Environmental Impacts of Substituting Asphalt Binders
… of paramount importance. From moving to warm mix asphalt to decrease our indulgence in high energy consumption to substituting fly ash for asphalt binders to reduce dependence on pure asphalt binders from petroleum, engineers have painstakingly tried to develop new ways to improve the ways that …
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A novel methodology for the evaluation of low temperature failure properties of asphalt binders
L'abstract è presente nell'allegato / the abstract is in the attachment
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EVALUATION OF PHASE ANGLE AS A PRACTICAL PARAMETER FOR LOW TEMPERATURE SPECIFICATION GRADING OF ASPHALT BINDERS
… to evaluate the thermal cracking performance of binders because of its higher sensitivity, easier experimental procedure, and smaller sample quantity requirement.
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The effects of micro and nano size bauxite particles in modified asphalt binders and asphaltic mixtures
… to focus how to improve the characteristics of asphalt mix in order to reduce the pavement deteriorations. This study aims to evaluate the effects of Malaysian Micro bauxite powders (MBP) and Nano bauxite powders (NBP) with 3%, 5% and 7% by mass of bitumen. Conventional bitumen 80/100 …
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INVESTIGATING THE INTERACTION BETWEEN THE RECYCLED COMPONENTS AND THE ASPHALT BINDERS, PLANT, LAB, AND FIELD MIXES
<p>"Modifying asphalt binders and mixes with recycled components is common practice due to their environmental and economic merits. Literature has indicated that different recycled components interact with (blend with) asphalt differently, ranging from no blending, partial blending, or full …
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Modeling of the linear viscoelastic response of polymer modified asphalt binders at intermediate and high temperatures
… mechanical properties of polymer modified asphalt binders at intermediate and high service temperatures. A typical paving grade asphalt and seven different elastomeric modifiers were used. The modifiers, representing a wide variety of random copolymers and thermoplastic block copolymers, …
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EXPLORING THE MASTER CURVE PARAMETERS FOR EFFICIENT PERFORMANCE GRADING OF ASPHALT BINDERS FROM THE UNITED STATES OF AMERICA
… in achieving long-term performance with asphalt pavements. Therefore, attention should be paid to the asphalt binder acceptance criteria used, and concerted efforts are required to develop and design test methods with high accuracy, sensitivity, repeatability, and reproducibility. Testing …
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Development of the Duomorph Asphalt Rheology Tester (DART): a self-contained, portable device for quality assurance testing of asphalt binders
… a bench prototype device, named as the Duomorph Asphalt Rheology Tester or DART, for use in quality assurance (QA) testing of asphalt binders. This self-contained, portable device was re-engineered from its original version developed in the 1970s to test the structural integrity of solid rocket …
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An acoustic emission-based test to evaluate low temperature behavior of asphalt materials
Low temperature cracking in asphalt pavements located in cold climates is a major cause of pavement deterioration. Accurate evaluation of low temperature cracking behavior of asphalt materials is necessary in order to design pavements that are resistant to thermally induced cracking. Detrimental …
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Comparative Study of the Effects of Physical and Chemical Aging on Extracted and Recovered Asphalt Binders from Some Municipal and Provincial Roads in Canada
… bath temperature of 160 °C for one hour. The binders recovered from the loose-mix samples were taken through laboratory aging using the standard Superpave® pressure aging vessel method and all the samples were evaluated for their performance using conventional Superpave® methods such as …
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Prediction of Linear Viscoelastic Response of the Loss Shear Modulus of Polymer-Modified Binders
… mathematical models, developed on straight asphalt binders, are inadequate to characterize the frequency dependence of response of polymer-modified asphalt binders. In an earlier study at Virginia Tech, mathematical models were developed to predict the storage and loss shear moduli of …
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Viscoelastic Modeling of Straight and Modified Binders at Intermediate and High Temperatures
… introduction of a new range of high performance asphalt binders. These new binders known as modified asphalt binders, have a more complex behavior than traditional binders. A review of the current mathematical models shows that most of them suffer from different drawbacks that make them …
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Development and validation of a novel testing procedure for the evaluation of rutting susceptibility of bituminous binders.
… of rutting susceptibility of different asphalt binders thorough various parameters and correlating them with parameters resulted from tests carried out on their corresponding mixtures. Several factors influence the occurrence of rutting in asphalt mixtures including aggregate properties, …
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Exploring the Black Space of Compressive and Shear Modulus
… used to determine the viscoelastic behavior of asphalt pavement materials, with the standard analysis generating a Master Curve. One alternative to the master curve approach is a Black Space diagram, which is a rheological plot that can delineate either dynamic modulus |E*| or shear modulus |G*| …
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Nano-scale evaluation of moisture damage in asphalt
Moisture damage is one of the major problems of asphalt pavements in United States. The moisture damage problem in asphalt has been studied for decades; still it remains an unsolved problem. Traditional macro-scale tests and methods failed to describe how and what factors affect moisture damage …
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Comparative Evaluation of Field and Laboratory-Produced Foamed Asphalt Mixture from Reno, Nevada
… was produced with a polymer-modified PG64-28NV asphalt binder. The rheological properties were evaluated for virgin, RAP and extracted/recovered asphalt binders from field and plant-produced mixtures. The mixtures were evaluated for their resistance to moisture damage by means of measuring the …
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