Abrasivity Assessment of Granitic Building Stones in Relation to Diamond Tool Wear Rate Using Mineralogy-Based Rock Hardness Indexes |
| |
| Authors: | Nurdan Güne? Y?lmaz |
| |
| Institution: | 1.Department of Mining Engineering, Engineering Faculty,Mugla University,K?tekli, Mugla,Turkey |
| |
| Abstract: | The objective of the present study was to determine the abrasive wear potential of granites in circular sawing using some
mineralogy-based rock hardness indexes. A literature study indicated that little or no attention has been given to assessing
this kind of relationship in the field of stone processing. To accomplish this objective, sawing experiments were performed
on nine different granites used widely as building and decorative stone materials. The measured sawblade-specific wear rates
were correlated with three different rock hardness indexes attained by combining the percentage content of hard mineral constituents
with their known hardness values. Statistical analysis of the experimental data revealed that rock hardness indexes that are
based on both Vickers hardness number and Rosiwal hardness could be accepted as reliable indicators of granite abrasivity.
These two indexes were also found to correlate well with the average power drawn during the process. However, the rock abrasivity
index based on Mohs relative scratch hardness did not show statistically significant correlations with sawblade wear rate
and power drawn. Although quartz percentage content is regarded as an important abrasivity parameter by practitioners, the
observations made here indicate that consideration of quartz percentage content alone is not sufficient to describe the abrasive
potential of granites, and thus incorporation of other hard mineral constituents could be more suitable. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
