Sequatchie Gray and Varigated Flagstone and Strip Rubble
Technical Data for Sequatchie Gray and Varigated Flagstone and Strip Rubble.
| Property | Value |
| Type | Tennessee Quartzite |
| Classification | III quartzite; flagstone |
| Colors | gray or varigated |
| Patterns | random; irregular |
| Finish | natural cleft |
| Absorption | Max. 1% |
| Density | Min. 160#/ft |
| Compressive strength | Min. 2000 psi |
| Modulus of rupture | 2000 psi |
| Abrasion resistance | 8 |
Quartzitic Sandstone.
Geologic Designation: Quartzitic Ferruginous Sandstone
Trade Names: Tennessee Quartzite, Crab Orchard Stone, Tennessee Stone, Sequatchie Stone
Color Range: Variegated (earth tones: shades of tan, brown, Beige, buff, yellow, pink and cream with heavy to light iron veining) Blue gray tones.
Applications: Exterior, interior, walls, flooring, paving, treads, Sills, hearths, mantels, wall coping, pool coping, Fireplace surrounds, countertops, curbing, Landscape and Architectural trim.
Types: Dimension Stone, Sawn bed, Flagstone, Fieldstone
Sizes:
Standard Thickness: 7/8” & 2 1/4” Sawn
Flooring and Paving: 6” multiples
Hearths and treads widths: 6”, 8”, 10”, 12”, 14”, 16”, 18”, 20”, 24”, 30” cut to size orders.
Textures: Sawn, Honed, Polished, Natural Cleft, Sand-Blasted, Rock Faced, Split Face, Sawn Edge, Bullnosed Edge and other custom finishes.
Physical Properties: Absorption (ASTM C-97) 1.923%
Density (ASTM C-97) 156pcf
Bulk Specific Gravity 2.495
Compressive Strength (ASTMC170) 16,550 psi
Flexural Strength (ASTM C-880) 1,580 psi
Test Procedure: Modified ASTM C666: “Standard Test Method for Resistance of Concrete to Rapid Freezing and Thawing”. Five 3” x 3”x 3” specimens were subjected to 300 freeze Thaw cycles as per ASTM C666 Procedure A (freezing and thawing in water). Before and after Freeze/thaw cycling the specimens were observed for Visible cracks, broken pieces, or other visible defects.
Test Results: All five (5) specimens showed no visible defects after 300 cycles of freeze/thaw.