One of the group of hard and abrasive stones is granite building stones which are used for building materials in the interior and exterior of buildings. Provide cutting and sawing tools for extraction and processing is expensive because of the high abrasivity. So, the eva‎luation of the abrasivity of these stones becomes important. One of the most common tests to eva‎luate the abrasivity of stones is CERCHAR test. In this investigation, the relationship between CERCHAR abrasivity index and the petrological, physical and mechanical properties of stones has been investigated by examining wide range of Iranian granitic building stones (14 different samples). This Study revealed that the most of the petrological, physical and mechanical properties of stones (except density and porosity) have a significant correlation with the CERCHAR abrasivity index. Also the most important parameter is the equivalent quartz content which strongly effects on abrasivity of granite building stones. Forethere more, the amount of wear of diamond cutting discs was determined for different types of studied granite stones and its relationship with the CERCHAR abrasivity index was investigated. In conclusion, CERCHAR abrasivity index has a meaningful correlation with cutting wear.

ابراهيم قاسمي

لهراسب فرامرزي، راحب باقر پور