Analysis of variability of degree of compaction and air void content in asphalt pavement of baosan expressway

Abstract

Degree of compaction (DOC) and air void content (VV) play an important role in the construction of asphalt pavements. The strict control of DOC and VV is a fundamental guarantee of improvement of the pavement performances. The variability reflects the overall management and construction level. In this paper, the variability of the DOC, VV and Marshall density, obtained from various sections and different layers of Baosan expressway, was investigated. The obtained data showed that a certain variability of the indexes as mentioned above existed during the construction of asphalt pavements. The coefficients of variability differed with different sections as well as layers. © 2011 Springer-Verlag.