COTTAER SANDSTONE -gw-

COTTAER SANDSTONE -gw- (gray/white) is an extremely fine-grained, color-selected gray/white Elbe sandstone from the "Neundorf" quarry with isolated yellow-brown colorations and pale yellow cloudiness. It gets its typical marbled structure from wavy clay skins embedded in the stratification.

COTTAER SANDSTONE is frost and weather resistant and is used both outdoors and indoors. It is particularly suitable for facade slabs including column and pillar cladding, window and door surrounds, ashlar and column stones, cover slabs as well as profiled stonemasonry work of any kind in restoration and new construction.

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)