Viscoelastic study of asphalt mixtures (2nd report)

It was mentioned in the first report that the viscoelastic constant can be decided by using the method of least squares, and also the compressive test subjected to a linearly increasing strain ε_0t was tried at different rate of strain and amount of filler. It is generally said that the stability value of asphalt mixture is largely affected by amount of asphalt, so we must also make a special study of amount of asphalt in asphalt mixture. In this paper, authors intend to examine the nature of asphalt in viscoelastic respect. From these study, if we can decide the proportion of asphalt mixture, it is very useful thing. For practical purposes, we must deal with two or three layers of vescoelastic bodies, but in its case, it is very difficult to determine the viscoelatic constant. From now on, we can also regard soil as viscoelastic body, and viscoelastic behavior of soil will be largely studied by many investigators. Anyway, a great many problems about the viscoelastic bodies are left without being solved. The compressive test subjected to a linearly increasing strain ε_ct was tried at different rate of strain and amount of asphalt, and its result is mentioned in this paper.