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.
Results
Showing 1 to 13 of 13 for “"Asphalt Content"”.
-
Evaluation of Troxler 3241-C nuclear asphalt content gauge used for Marshall specimens
Asphalt cement content is one of the most important requirements for producing high quality hot-mix asphalt. The determination of the asphalt cement content of hot-mix asphalt by traditional methods is time consuming and hazardous. A demand for faster and safer methodes) led to the development of a …
-
Balanced asphalt mix design and pavement distress predictive models based on machine learning
Traditional asphalt mix design procedures are empirical and need random and lengthy trials in a laboratory, which can cost much labor, material resources, and finance. The initiative (Material Genome initiative) was launched by President Obama to revitalize American manufacturing. To achieve the …
-
Digital Mix Design for Performance Optimization of Asphalt Mixture
Asphalt mix design includes the determination of a gradation, asphalt content, other volumetric properties, the evaluation of mechanical properties and moisture damage potentials. In this study, a computational method is developed to aid mix design. Discrete element method (DEM) was used to …
-
Evaluation of selected airport pavements in New Mexico
… field coring are performed to collect samples of asphalt cores, base aggregate, and soils. These samples are then transferred to the Pavement Laboratory at the University of New Mexico for testing. Soil tests include index properties, moisture, and classification tests. Using these laboratory test …
-
A Laboratory Study on the Effect of High Rap and High Asphalt Binder Content on the Performance of Asphalt Concrete
This thesis investigates the effect of added asphalt binder content on the performance and volumetric properties of asphalt concrete mixes containing Reclaimed Asphalt Pavement (RAP). Mixes with three different percentages of RAP (0%, 20%, 40%) obtained from an asphalt producer and three different …
-
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 …
-
Analysis of Fine Asphalt Concrete Mixture Gradations from Various Sources to Enhance Durability
… the factors that can influence the durability of asphalt mixtures, is the gradation. This thesis will look into the effect of fine aggregate dense gradations on asphalt mixture durability for sources from the state of Nevada. Based on the available literature, finer gradation asphalt mixes have …
-
Evaluation of indirect tensile strength to identify asphalt concrete rutting potential
… (SHRP) does not include any testing to evaluate asphalt mixture for resistance to permanent deformation. This prompted the National Cooperative Highway Research Program (NCHRP) to sponsor projects for the development of a simple performance test for rutting potential of asphalt mixtures. Anderson …
-
Enhancing Network-Level Pavement Macrotexture Assessment
… RMS) for pavements prone to bleeding due to rich asphalt content. Finally, several previously published macrotexture parameters along with a suite of novel parameters were evaluated for their effectiveness in the prediction of wet weather friction and certain types of road noise. Many of the …
-
Preliminary Study of Highway Pavement and Materials
… Performance data, (b) fracture properties of asphalt concrete in a semicircular bend (SCB) test using a noncontact camera and crosshead movement, and (c) hot applied modified-binder-chip-seal field performance in California. The objective is to improve pavement performance and life, establish …
-
Balancing asphalt mixes containing recycled materials for optimum field performance
Asphalt concrete (AC) is the most common material used for the construction of pavements in the U.S. and many other countries in the world. With the increasing use of recycled materials like reclaimed asphalt pavement (RAP) and recycled asphalt shingle (RAS), the cracking resistance of asphalt …
-
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 …
-
Implementation of mechanistic-empirical approach for structural design of hydrated lime modified flexible pavement
… the objective of this study, three types of asphalt concrete mixtures that represent the pavement asphaltic courses (Wearing, Leveling and Base) of the asphalt concrete layer were produced and evaluated. As mineral filler materials, ordinary limestone dust and hydrated lime were used in this …