COTTAER SANDSTONE -gwg-

COTTAER SANDSTONE -gwg- (gray/white/yellow) is an extremely fine-grained gray-white to yellow Elbsandstone without color selection, with a siliceous bond. The color changes can be stratification conform, but also cloudy-knotty very vivid and irregular. Wavy clay skins intercalated in the stratification give it its typical marbled texture.

Architectural elements made of this material are used both outdoors and indoors.

Special suitability

Facade, including column and pier cladding, window and door framing, ashlar and column stones including coping slabs, interior architectural elements, profiled stonework in restoration and new construction.

Geological formation

Chalk, Lower Turonian Labiatus Sandstone

Trade name: COTTAER SANDSTONE
Petrographic family: Sedimentary rock
Petrographic name: Sandstone / Elbsandstone / Quartzarenite
Geological age: Cretaceous / Lower Turonian / Labiatussandstein
Origin: Germany / Saxony / Cotta

Bulk density (according to DIN EN 1936): Mean value 2,040 kg/m³
Compressive strength (according to DIN EN 1926): Mean value 55 Mpa (perpendicular to the anisotropy plane)
Flexural strength (according to DIN EN 12372): Mean value 5.8 Mpa (perpendicular to the plane of anisotropy)
Water absorption (according to DIN EN 13755): Mean value 6.8 % (under atmospheric pressure)
Anchor failure (according to DIN EN 13364): Mean value > 1,400 N (type IIa, d = 50 mm)
Open porosity (according to DIN EN 1936): Mean value 22.6
Frost resistance (according to DIN EN 12371): yes, scale "0" (mean value mass loss 0.01 %, after 56 freeze-thaw cycles)