Abstract
The soil sample was impregnated with the unsaturated polyester resin with 100cm3 made of metal a cylinder core for the actual-volumenometric method. The sample of each metal, which did was impregnated, was cut out by using CBN cutting blade with slicing machine. A consecutive soil thin section was easily obtained. There was a very high correlation with gaseouse phase ratio of the actual-volumenometric method and void ratio of thin section. The gaseouse phase ratio was able to be presumed from the void ratio of the soil thin section with a lot of large gravel.
