Preto Reguengos
TYPE
Granite
COLOR
Black
MACROSCOPIC DESCRIPTION
Black coloured and medium grained rock with homogeneous appearance, dominantly biotitic.
FEATURES
Compression breaking load Kg/cm2 1138
Compression breaking load after freezing test Kg/cm2 1220
Bending strenght Kg/cm2 170
Volumetric weight Kg/m3 2663
Water absorption at N.P. conditions % 0.16
Apparent porosity % 0.43
Thermal linear expansion coefficient 10-6 per ºC 7.9
Abrasion test mm 0.2
Impact test: minimum fall height cm 65
ACABAMENTOS
