Investigation of factors related to rutting of bituminous aggregate mixes
By: by Bradley Bruce, Mike Lynch, Mark Mullaney
Contributors: Lynch, Mike; Mullaney, Mark; Montana. Dept. of Highways. Materials Bureau
Publisher: Montana Dept. of Highways Materials Bureau
Published: 1987
Place of publication: Helena, Mont
Language: eng
Number of pages: 41
Subjects: Bituminous Pavements; Maintenance and repair; Asphalt Pavements; Pavements; Performance; Additives; Aggregate gradation; Bituminous mixtures
Other titles: Investigation of factors related to rutting of bituminous pavement
Description: Soon after 1980, wheelpath rutting in asphalt pavements came to be recognized as a problem confronting the Montana Department of Highways. By 1982, it became clear that the rutting was not limited exclusively to older pavements, but was also occurring in a significant portion of the newer pavements, both overlays and new construction. To address this problem a number of improvements were implemented. Although these anti-rutting specifications reduced rutting, the problem of pavement rutting was still occurring in some of the newest pavements in 1985. Starting in 1986, several bituminous plant mixtures were tested to develop formulations for rut resistant bituminous pavements. Supplemental design criteria and construction specifications to eliminate or reduce rutting of future bituminous pavements were developed. The variables investigated were aggregate gradation and asphalt additives. Testing covered tensile strength, creep, binder properties, and Marshall stability. Results are presented in this report.
Notes: "November 1987."
Table of contents: title: Contents; title: List of figures; title: List of tables; title: Introduction; title: Investigation sequence; title: Interpretation of tables; title: Abson test results; title: Summary of tensile strength test results; title: Creep compliance; title: Creep compliance test results with additives; title: Conclusions; title: Recommendations.