岩石の高温度特性

線膨張係数とヤング率の測定

抄録

The authors now study thermal fracturing of rocks by supersonic rocket flame jet. Making a good and efficient rocket burner and increasing of thermal fracturing efficiency of rocks require study of physical property variations of rocks with elavated temperature.
In this paper the authors report some measuring data of the linear coefficient of thermal expansion and Young's modulus in high temperature. Our paper shows these physical properties in high temperature different from the room temperature data. As specimens of rocks, we used granite, sandstone, andesite, rhyolite, pottery stone, limestone, and tuff.
These data are available for evaluation of thermal stresses in rocks in thermal fracturing.