Abstract: The quality assurance and quality control of high fills are very important for the construction of airport in mountain areas. In a case study, the correlations between various quality control criteria and index properties, such as, dry density, degree of compaction and porosity, are discussed and the optimum quality control criteria are recommended. In the east side of the project area where the fill thickness exceeded 100 meters, the controlling factors were: degree of compaction, maximum loose layer thickness, and tolerable leveling fills. The trial fill blocks were tested by using impact and vibratory compaction methods respectively. The thickness of the fills, number of compactions and optimum moisture contents were obtained through the trial test blocks.

Key words: quality of fill operation, degree of compaction, test criteria, dynamic compaction