Analysis of Uplift Deformation and Loose Phenomena of Asphalt Layer

Abstract:

The paper presents an analysis of the voids and height transformation of samples employed in Loaded Wheel Tracker tests,and derived from the tests road by Accelerated Loaded Facility application and from asphalt pavement insite.The results validate that the uplift deformation and loose phenomena occur in asphalt pavement layers under vehicle loads and then the appearance mechanism and influence factors of loose phenomena of asphalt layers uplift place are explored.An analysis is made of the influence factors and development tendency of uplift coefficient, which is a ratio of uplift deformation to total rutting deformation of asphalt layers.The uplift coefficient value range is recommanded to be 0~0.52 on the basis of a contrastive analysis.Finally,the paper presents a proposal about the upper limit when the road section is narrow,and the lower limit when it is wide.

Key words:asphalt layer; rutting deformation; uplift deformation; loose phenomena; uplift coefficient