摘要: |
Image analysis represents a powerful tool for measuring morphological properties of asphalt mixes from exposed cross sections of compacted specimens. The procedure involves acquiring digitized images and processing the content by means of various numerical algorithms. Key parameters that are of interest to pavement design and that are amenable to measurement by image analysis include aggregate gradation, asphalt content, air void content, amount of flat/elongated aggregates and distribution of particle orientations. Determination of these properties by standard laboratory tests is time-consuming, costly, often environmentally undesirable and subject to testing errors. The objective of this study has been to develop a comprehensive computer program that can produce these quantities by processing 2-D images of compacted HMA sections. |