Weathering effects on physical properties and material behaviour of granodiorite rocks

Abstract

ISRM International Symposium - EUROCK 2016 -- 29 August 2016 through 31 August 2016 -- -- 144475Weathering has several effects on the physical, strength and material behaviour characteristics of rocks. Various researchers have attempted to obtain weathering classifications using qualitative and/or quantitative approaches. In this study, material behaviour under uniaxial loading conditions, mechanical and physical properties are investigated for reliable estimation of weathering degree of granodiorites. For this purpose, representative rock samples with different degrees of weathering from Havran (Balıkesir/Turkey) were collected and the necessary investigations and tests were performed. Weathering grades ranging from unweathered (W 0 ) to highly weathered rock (W 3 ) were used for classification purposes. Core samples were tested in the laboratory to determine various physical and mechanical properties for each weathering class. Also, mineralogical properties of granodiorites were investigated and described for each weathering degree. Test results were used for analyzing and constructing prediction models with the aim of indirect determination of the weathering degree of granodiorites. Finally, a monogram was proposed to distinguish different weathering degrees under uniaxial loading conditions for rock engineering purposes. © 2016 Taylor & Francis Group, Londo