Original paper(Vol.47 No.5 pp.508)
Prediction equations for weathering of cretaceous Kitakyusyu granite by outdoor exposure test
Hirano Isamu; Sadahiro Takeyosi; Kikuchi Kohkichi; Mito Yositada; Nishibayashi Michihiko; Baba Masahiro
Abstract:In order to predict the weathering process of rock foundation and rock materials for engineering purpose, fundamental studies have been carrying out to investigate the factor of weathering, changes of some properties and rock deterioration mechanism by weathering.
The outdoor exposure tests on Cretaceous Granitic Rock (Kitakyusyu granite) were carried out in this study. The columnar specimens used in this experiment are composed of a series of rocks that include fresh rocks to weathered rocks. Their weathering properties were clarified by the outdoor exposure, and the regression equations for the deterioration process were obtained as a function of outdoor exposure time. Using these equations, one can predict the weathering process from the initial physical and mechanical indices of rocks.
Key Words:rock material, rock series, rock weathering, outdoor exposure test, deterioration test, durability test, prediction equation of rock weathering