Manuel & Cardoso - Processing and Marketing of Natural Stones and Compounds

Xisto Preto

Shale and Slates

Macroscopic Description

Blueish grey to dark grey homogeneous schist, compact, finely grained, showing clear schistous cleavage.

 

Prevailing Applications

Roofing, facing slabs and other interior or exterior applications.

 

Physio-Mecanical Properties

 

Compression breaking load

Mpa

144

Compression breaking load after freezing test

Mpa

127

Bending Strength

Mpa

73.8

Volumetric Weight

Kg/m3

2 680

Water absorption at N.P.

%

0.1

Apparent porosity

%

0.3

Thermal Linear expansion

X10-6 perº C

8.4

Abrasion Test

mm

0.3

Impact test: Minimum fall height

mm

0.55

 

Localization:

 

Country: Portugal | District: Porto

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