WEATHERING ESTIMATE OF DECOMPOSED GRANITE BY PARTICLE DISTRIBUTION ANALYSIS

Abstract

Grain size distribution curves of decomposed granite sampled from slopes of a reser voir for a pumped storage power plant were analyzed by the negative binomial distri bution in order to estrmate the weathering rate. The verification was made by compa risons with the results obtained from X-ray analysis and chemical dissolution tests. Engineering applications showed that a unique relationship among the parameters was available to relative estimation for weathering of soils at each slope.