Abstract
The near surface limestones in Florida have been undergoing cycles of deposition and weathering since their formation. These processes coupled with active karstification have resulted in limestone sequences that are highly variable with respect to weathering state and thus engineering and physical properties. Core specimens of Ocala limestone with varying weathering states were tested to determine relationships between physical and index properties. Each weathering state was associated with either two or three hardness values and as weathering state increased hardness decreased. Results show there is no relationship between unit weight and weathering state but the standard deviation of the unit weight values increases as weathering state increases. In general L-type Schmidt hammer, indirect tension, and point load results increase with increasing unit weight. For weathering states of W4 and above, the Schmidt hammer test becomes a destructive test. For weathering states of W3 and above, point load testing may not be appropriate as indicated by very low Is50 values across a wide range of unit weights.
Original language | English |
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State | Published - 2009 |
Event | 43rd U.S. Rock Mechanics Symposium and 4th U.S.-Canada Rock Mechanics Symposium - Asheville, NC, United States Duration: 28 Jun 2009 → 1 Jul 2009 |
Conference
Conference | 43rd U.S. Rock Mechanics Symposium and 4th U.S.-Canada Rock Mechanics Symposium |
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Country/Territory | United States |
City | Asheville, NC |
Period | 28/06/09 → 1/07/09 |