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Detection of rock material variation by sonic velocity zoning
Abstract Quality variations in a hydrothermally altered dolerite from North-East England can be related to changes in dry density, porosity and strength, and in the results of standard tests on aggregates. Alteration can be detected as colour changes across sawn slabs, and the different types of altered dolerite can be characterised in terms of the standard micropetrographic indices. Sonic velocities through a 32 mm slab show satisfactory linear relations to density, porosity and percentage of sound minerals. Contours of equal sonic velocities or travel times can be drawn on the face of the block and the resultant broad zonation corresponds satisfactorily with the hydrothermal zones established by colour variations and detailed micropetrographic analyses.
Detection of rock material variation by sonic velocity zoning
Abstract Quality variations in a hydrothermally altered dolerite from North-East England can be related to changes in dry density, porosity and strength, and in the results of standard tests on aggregates. Alteration can be detected as colour changes across sawn slabs, and the different types of altered dolerite can be characterised in terms of the standard micropetrographic indices. Sonic velocities through a 32 mm slab show satisfactory linear relations to density, porosity and percentage of sound minerals. Contours of equal sonic velocities or travel times can be drawn on the face of the block and the resultant broad zonation corresponds satisfactorily with the hydrothermal zones established by colour variations and detailed micropetrographic analyses.
Detection of rock material variation by sonic velocity zoning
Dearman, W. R. (author) / Turk, N. (author) / Irfan, Y. (author) / Rowshanei, H. (author)
1987
Article (Journal)
English
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