Effect of an increase in rotation in a wear test to predict the durability of rock materials

摘要

This paper presents a study in wear tests with a gneiss from Santo Antonio de Padua/RJ/BR and includes analysis of the rotation increase by testing Slake Durability (SD) and Micro-Deval (MD) tests. To evaluate the influence of the rotation in these tests was set up laboratory equipment that allows varying the speed of 7 rpm to 238 rpm. This study could be implemented in wide variety of rock materials and thus target it according to their lifetime in the project. With varying the wear levels it was observed increasing weight loss until the inertia moment holding the specimens in the wall of the machine. The results indicate an increase in linear mass loss. These procedures allow a more precise analysis of durability at a range approximately from various regions of the world.