The petrology relationship between physical and mechanical properties in Granitoid rocks.

In this research relationships between petrological properties and physical and mechanical characteristics have been investigated in three different granitoid rocks' texture. According to field investigations granitoid with coarse, medium and fine texture from three regions respectively Golpaigan (Hasn Robat), Aligudarz (Pir Tak) and Borujerd (Tavan Dasht) were selected and sampled. Laboratory studies on these samples and their thin sections determined mineralogical and petrological composition. According to standard testes some of the physical properties such as porosity and density, and some of the mechanical properties such as point load strength and uniaxial compressive strength were calculated. Then relationship between physical and mechanical properties with petrological characterizes have been studied. This research showed that in these granitoid rocks the effect of the texture type on physical and mechanical properties is greater than mineralogical composition. Also findings showed that the investigation on petrological properties as primary index for evaluation of physical and mechanical properties of granitoid rocks could be done in further studies.