ASTM RR:D04-1020 PDF Download

ASTM RR:D04-1020 standard involves conducting an interlaboratory study. In this study, twenty-one laboratories performed tests on twenty-seven asphalt mixture samples. The purpose of the study was to determine the precision of the test method D6752 and establish a precision statement.

The standard aims to measure the bulk specific gravity and density of compacted asphalt mixtures. It employs an automatic vacuum sealing method, which ensures the accuracy and consistency of the measurements. The interlaboratory study helps to assess how well the test method performs across different laboratories and provides insights into the repeatability and reproducibility of the results.

By conducting the study and analyzing the data from multiple participating laboratories, the standard aims to determine the precision of the test method. This precision statement helps users of the standard understand the level of agreement that can be expected when using the automatic vacuum sealing method for measuring the bulk specific gravity and density of compacted asphalt mixtures.