Abstract
Influence of freezing and thawing on the mechanical properties of rock is investigated. The rocks used for the examination are Kurihashi-granite, Funyu-tuff and Tage-tuff. The difference between the intact and degraded specimens is investigated for mechanical parameters and distribution of strain by unconfined compression test. The strain distribution is observed through the image processing. As the results of the test, it is found that the change in mechanical behaviors of Kurihashi-granite is quite different from that of Funyu-tuff. Granite and Tage-tuff become brittle with degradation while Funyu-tuff becomes hard rock. It is inferred that the volumetric strain distribution may be good measure for failure.
