Portland Limestone
Technical Information
Stone name: Portland Limestone
Geological type: Oolitic Jurassic limestone
Colour/texture: White to soft beige colour with small shells present on some beds
Maximum size: Up to three metres in length have been supplied
Density: 2376kg per cublic metre
Water absorption: 5.8
Compressive strength: 72 N/mm2
Freeze thaw resistance: Tests indicate that failure due to frost action is unlikely
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