|
WESTERN REGIONAL
SUPERPAVE CENTER
|
|||
NCHRP 1-36: Determination of Pavement Damage from Super-Single and Singled-Out dual truck Tires This research project was completed in 1997. The objective of the research was to develop a procedure to estimate pavement damage associated with the use of single-tire configurations compared with that of conventional dual-tire configurations. The first phase of the project identified the limited use of single-tire configurations in the United States, identified the factors that contributed to an increased use of these tires in certain countries, and indicated an unlikely substantial increase of their use in the near future. Therefore, no regulations concerning the use of single-tires in the U.S. are warrant pursuing at this time. A report was prepared which documented the various studies that have been conducted to evaluate the relative damage of single tires on both flexible and rigid pavements. The report also documented the various approaches that were used to assess the relative damage and the resulting equivalencies from these studies. Available Information: Report can be obtained by contacting WRSC
Effect of Off-Road Tires on Flexible and Gravel Pavements This research project was sponsored by the South Dakota DOT and was completed in 2002. The overall objective of this research project was to evaluate the impact of off-road equipment tires on flexible and granular pavements. The research modeled pavement damage caused by tires and tracks on off-road equipment, assessed the economic benefits and costs associated with the use of off-road tires and tracks under present regulations, and recommended policies for regulating transportation of off-road equipment over state and local highways. The research used a combination of field testing and theoretical modeling of the pavement structure to evaluate its responses to tires and tracks used on off-road equipments under their respective speed and axle load levels. The field testing of typical pavement sections instrumented with sensors to measure critical pavement responses was used to validate the theoretical model which was then used to expand the scope of the research to cover other pavement, environmental, and equipment conditions. The project started on December 1, 1999 and was completed on January 30, 2002. Available Information: Download Final Report "Effects of Off-Road Tires on Flexible & Granular Pavements
|
||||
 |
|
|||
|
||||
