Global ETD Search
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 488 for “"Asphalt"”.
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High Reclaimed Asphalt Pavement in hot mix asphalt
… the existing pavement, known as Reclaimed Asphalt Pavement (RAP) is ripped up, milled, and stockpiled and can be used in the creation of new mixes in order to save money and resources. New Jersey state specifications limit the percentage of RAP that can be used to 15% for surface courses …
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Impact of recycled asphalt shingles on asphalt concrete characteristics
The use of recycled materials in asphalt mixtures such as reclaimed asphalt pavements (RAP) and more recently recycled asphalt shingles (RAS) have become widely accepted in the United States as a replacement for virgin asphalt binder or virgin aggregates. However, the economics and the challenges …
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Performance of hot mix asphalt using peat modified asphalt binder
… among others, are introduced to be mixed with asphalt. This study was conducted to investigate the use of parit Nipah peat (PNpt) to be mixed with asphalt, both of unaged and aged conditions to improve the performance of asphalt mix. The physical properties, storage stability and rheological …
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Fracture of asphalt.
Massachusetts Institute of Technology. Dept. of Civil Engineering. Thesis. 1966. M.S.
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Evaluation of Nevada's Warm Mix Asphalt Mixtures with Recycled Asphalt Pavements
The purpose of this study is to evaluate warm mix asphalts (WMA) with recycled asphalt pavement (RAP) from Nevada. For this study, four different warm mix technologies and four different aggregate sources with two different percentages of recycled asphalt binder ratios were used.Aggregates from …
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Performance Characterization of Recycled Asphalt Pavements with Warm Mix Asphalt Technologies
… performance characteristics of Recycled Asphalt Pavements (RAP) with Warm Mix Asphalt (WMA) Technologies. RAP was introduced in mixtures at three levels: 0, 15 and 35% of RAP contents. Five WMA technologies were evaluated against all the mentioned levels of RAP content. The study was …
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Performance evaluation of warm mix asphalt mixtures incorporating reclaimed asphalt pavement
… of today’s engineering world. Warm mix asphalt (WMA) and reclaimed asphalt pavement (RAP) are the most prominent sustainable materials in asphalt concrete pavements. WMA is a not a new concept, however new innovations and increased usage of WMA has been spurred by the increased focus on …
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A new asphalt binder parameter to predict asphalt concrete fatigue behavior
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-12-01
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Performance of advera® warm mix asphalt with reclaimed asphalt pavement materials
… global attention and implementation of warm mix asphalt (WMA) technology in the asphalt industries. The constant efforts by asphalt industry to reduce emissions by lowering asphalt production temperature, made possible by incorporating warm asphalt additive named Advera®. Reclaimed asphalt …
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Improving the Laboratory Design of Asphalt Mixtures to Enhance Asphalt Pavement Durability
… the Superpave mixture design method to design asphalt mixtures. This method specifies that the optimum asphalt content for a given gradation be selected at 4 percent air voids. During construction, these mixtures are typically compacted to 7-8 percent air voids. If mixtures were designed to be …
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Nanomechanical characterization of asphalt
In this study, asphalt binder and asphalt concrete (AC) materials are characterized using laboratory nanoindentation testing and mechanical models. Traditionally, laboratory nanoindentation test data is analyzed using the Oliver-Pharr method to determine elastic modulus and hardness of materials. …
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The rheology of asphalt.
Massachusetts Institute of Technology. Dept. of Civil Engineering. Thesis. 1966. M.S.
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Effects of asphalt rejuvenator on thermal and mechanical properties of oxidized hot mixed asphalt
The utilization of asphalt rejuvenator, and its effectiveness for restoring thermal and mechanical properties was investigated via Disk-shaped Compact Tension (DC(T)) testing and acoustic emission (AE) testing for determining the embrittlement temperature of the mixtures. During the DC(T) testing …
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Optimizing the Use of Reclaimed Asphalt Pavement (RAP) in Hot Mix Asphalt Surface Mixes
The most common use of reclaimed asphalt pavement (RAP) is in the lower layers of a pavement structure, where it has been proven as a valid substitute for virgin materials. Instead, the use of RAP in surface mixes is more limited, with a major concern being that the high RAP mixes may not perform …
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Hydraulic properties of asphalt concrete
… to characterize the hydraulic properties of asphalt concrete. Wetting and drying water characteristic curves were measured for six asphalt concrete cores. From the water characteristic curves, it is proposed that asphalt concrete may require bi-modal sigmoid curves to represent drying. It is …
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Influence of Recycled Asphalt Shingles on Asphalt Binder Content, Mixture Stiffness, and Laboratory Rutting Performance
<p>Recycled asphalt shingles (RAS) is a technology in which pavement costs can be reduced significantly and pavement properties may be enhanced. Also, incorporating shingles into pavements reduces the impacts of waste shingles in landfills, preserving our environment. However, for this new …
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Evaluation of the degree of blending of Reclaimed Asphalt Pavement (RAP) binder for warm mix asphalt
… has seen the emergence of a plethora of warm mix asphalt (WMA) technologies and application. With most states incorporating a recycled asphalt pavement (RAP) limit, it is necessary for WMA to not only serve as a greener technology but to work in conjunction with current RAP practices. Presently, …
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THERMAL FATIGUE DAMAGE OF ASPHALT PAVEMENT
… can be defined by a decrease in stiffness of Asphalt Concrete (AC) under repeated traffic loading. For each cycle of traffic loading, tensile strain develops at the bottom of AC layer of an asphalt pavement. Some localized damages occur in the material at minute-scale due to this developed …
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Viscoelastic characterization of rubber additive asphalt.
Massachusetts Institute of Technology. Dept. of Civil Engineering. Thesis. 1969. Civ.E.
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