Red - Marble
Quarry Location: Negrais, Pero Pinheiro, Sintra, Grande Lisboa, Lisboa e Vale do Tejo
Water Absorption: 0.2 %
Density: 2700 Kg/m3
Flexural Strength: 124 Kg/cm2
Compressive Strength: 1150 - 1430 Kg/cm2
Recommended Usage: Exterior - Interior wall and floor applications, countertops, mosaic, fountains, pool and wall cappi
Finishing Surface: Polished, Sawn Cut, Sanded, Rockfaced, Sandblasted, Tumbled
Additional Names: Red Negrais, Encarnado Negrais Marble, Encarnado Negrais Limestone,Encarnado Negrais
Encarnado Negrais is a pinkish/brick red tonalities with dark red and occasionally grey shades and dark red streaks micro-crystalline sedimentary rock.
PHISICAL-MECHANICAL PROPERTIES
Compression Breaking Load: 1430 Kg/cm2
Compression B.L. after Freezing Test: 1150 Kg/cm2
Bending Strength: 124 Kg/cm2
Volumetric Weigth: 2700 Kg/m3
Water Absorption: 0,2 %
Apparent Porosity: 0,4 %
Thermal Linear Expansion Coefficient: 4,3 10^6 per oC
Abrasion Test: 2,0 mm
Impact Test: 55 cm
Freeze-Defreeze cycles (no alteration after): 60 cycles
MICROSCOPIC PROPERTIES
Calcite: ~ 100 %
CHEMICAL ANALYSIS
Al2O3: 0,00%
CaO: 54,70%
Fe2O3: 0,14%
K2O: 0,02%
MgO: 0,74%
Na2O: 0,07%
P.R.: 43,75%
SiO2: 0,62%