On the Stability of Asphalt Mixtures

Asphalt mixtures have an various complicated element as dynamical properties. And, we can point out maximum grain size, and ratio of filler to asphalt as which have an effect on stability of asphalt mixtures. Asphalt mixtures are classified into asphalt concrete, topeka, sheet asphalt, and others, by the maximum grain size of using aggregate, and also divided coarse-graded type from dense-graded type, by the difference of its grading. In our previous paper, we proposed the method of deciding the amount of asphalt and the proportion which have a maximum density. But, when we tried Marshal test at standard proportion, stability value did not satisfy the standard value of Marshal test. So, we tried to make its reason clear. Then, we changed their ratio of filler to asphalt, and observed the variation of stability value about their all cases. The outcome of the observations were that the relations between stability value and ratios of filler to asphalt have been that of straight line, namely, if the ratios of filler to asphalt are getting larger and larger, stability values are also getting large. And, its order is the first. This is the report on it.