A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of Methods to Control Cold Temperature and Fatigue Cracking for Asphalt Mixtures
Pavement distresses caused by low and intermediate temperatures are a significant source of problems for highway agencies. While many tests have been developed to address this type of distress, few of them are considered practical for day to day operations. This report presents a methodology for controlling low temperature properties of asphalt mixtures by using the Bending Beam Rheometer (BBR). Through a rigorous statistical analysis, the number of replicate samples needed for valid conclusions was determined so that the test can be used for quality control/quality assurance during asphalt construction. Viscoelastic modeling was employed to evaluate the effect of aggregate size. The prediction of thermal stress is also presented. It was concluded that the BBR is a viable tool to determine low temperature properties of asphalt mixtures. Finally, a specification was drafted and an example is shown where the proposed methodology was used to control the quality of a field project.
Development of Methods to Control Cold Temperature and Fatigue Cracking for Asphalt Mixtures
Pavement distresses caused by low and intermediate temperatures are a significant source of problems for highway agencies. While many tests have been developed to address this type of distress, few of them are considered practical for day to day operations. This report presents a methodology for controlling low temperature properties of asphalt mixtures by using the Bending Beam Rheometer (BBR). Through a rigorous statistical analysis, the number of replicate samples needed for valid conclusions was determined so that the test can be used for quality control/quality assurance during asphalt construction. Viscoelastic modeling was employed to evaluate the effect of aggregate size. The prediction of thermal stress is also presented. It was concluded that the BBR is a viable tool to determine low temperature properties of asphalt mixtures. Finally, a specification was drafted and an example is shown where the proposed methodology was used to control the quality of a field project.
Development of Methods to Control Cold Temperature and Fatigue Cracking for Asphalt Mixtures
P. Romero (author) / C. H. Ho (author) / K. VanFrank (author)
2011
116 pages
Report
No indication
English
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