On the Strain of the Asphalt Mixtures

A great many problems about the viscoelastic bodies are left without being solved. Materials such as steel and glass, often regarded as elastic at ordinary temperatures, on close observations are found also to exhibit small amounts of viscous behavior. This can be observed as creep (increase of deformation at constant stress) or stress relaxation (decay of elastic stress at constant deformation), and these effects may be important under certain conditions of use. To return to our subject it was mentioned in the report of the past 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_ot was tried at different rate of strain, amount of filler, and amount of asphalt. It is generally said that the stress-strain curve is largely affected by the rate of strain, so we made a special study of asphalt mixture at different rate of strain. But, in the past, the fastest rate of strain was 10mm/min, so we intended to examine the stress-strain curve of the asphalt mixture under the conditions of more faster rate of strain. The results of experiments are mentioned in this paper.

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