A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of a Design Methodology for Asphalt Treated Mixtures
This report summarizes the results of a study that was conducted to develop a simplified design methodology for asphalt treated mixtures that are durable, stable, constructible, and cost effective through the examination of the performance of mixtures that have different aggregate gradation from typically available sources. The study was conducted in two parallel parts, Part I and Part II. Part I consisted of developing a design methodology for asphalt treated mixtures and conducting a laboratory testing program to characterize the behavior of the designed mixtures. Eight aggregate sources and two types of asphalt binders were considered in this part. Part I of this study also included conducting static as well as repeated load triaxial tests to characterize the performance of three unbound granular base materials. Furthermore, a parametric analysis was conducted using MEPGD software to evaluate the benefits of incorporating the asphalt treated mixtures in the design of a pavement structure. In Part II four overlay rehabilitation projects were selected in Louisiana to evaluate the constructability and in-situ proprieties of the asphalt treated mixtures designed in Part I. The results of Part I showed that the asphalt treated mixtures containing limestone aggregates, LS I and LS II, had the best laboratory performance among all other mixtures designed in this study. Furthermore, their performance was similar to conventional base course HMA ones at high and intermediate temperatures.
Development of a Design Methodology for Asphalt Treated Mixtures
This report summarizes the results of a study that was conducted to develop a simplified design methodology for asphalt treated mixtures that are durable, stable, constructible, and cost effective through the examination of the performance of mixtures that have different aggregate gradation from typically available sources. The study was conducted in two parallel parts, Part I and Part II. Part I consisted of developing a design methodology for asphalt treated mixtures and conducting a laboratory testing program to characterize the behavior of the designed mixtures. Eight aggregate sources and two types of asphalt binders were considered in this part. Part I of this study also included conducting static as well as repeated load triaxial tests to characterize the performance of three unbound granular base materials. Furthermore, a parametric analysis was conducted using MEPGD software to evaluate the benefits of incorporating the asphalt treated mixtures in the design of a pavement structure. In Part II four overlay rehabilitation projects were selected in Louisiana to evaluate the constructability and in-situ proprieties of the asphalt treated mixtures designed in Part I. The results of Part I showed that the asphalt treated mixtures containing limestone aggregates, LS I and LS II, had the best laboratory performance among all other mixtures designed in this study. Furthermore, their performance was similar to conventional base course HMA ones at high and intermediate temperatures.
Development of a Design Methodology for Asphalt Treated Mixtures
L. N. Mohammad (author) / M. D. Nazzal (author) / B. King (author) / A. Austin (author)
2013
93 pages
Report
No indication
English
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