A new method to measure the gross volume density of the asphalt mixture specimen - brush wax method

摘要

Thegross volume density of mix asphalt material compactedspecimen is a crucial indicator in the design of asphalt mixture and quality control of asphalt pavement, and it directly determines the asphaltaggregate ratio and the degree of compaction. It has a great practical significance to distinguish and choose the test method of gross volume density correctly. The specific aspects of the methods to determine gross volume density have been controversial. A new method named brush wax methodis put forward for these issues. The density, priority, VMA and compactness of asphalt mixturewere measured by different methods in the tests. By comparison of the new method and the other methods, the main technical indexes of asphalt mixture obtained by the brush wax method are the only one which greatly satisfiesthe technical requirements.