Vidraço Portela

Limestone

Vidraço Portela

Limestone

Microcrystalline carbonate rock, homogeneous with brownish beige color, characterized by arched whitish constituents, as well as other elongated ones of darker color than the surrounding microcrystalline cement.

Other Names
Estremadura Azul, Estremadura
Petrographic Classification
Limestone
Occurrence
Évora – Alcobaça
Origin
Leiria
Common Uses
It reveals its effectiveness when applied in quarries, facades, interior and external pavements.
Available Reserves
Available
Source
Information provided by Solancis - Sociedade Exploradora de Pedreiras, S.A.

Properties

  • Compression breaking load
    171 Mpa
  • Compression breaking load after freezing test
    170 Mpa
  • Bending strength
    12.5 Mpa
  • Volumetric weigth
    2640 kg/m3
  • Water absorption at N.P. conditions
    0.8 %
  • Aparent porosity
    2.3 %
  • Thermal linear expansion coeficient
    n.d X 10 -6 perº C
  • Abrasion test (Cappon)
    16 mm
  • Impact test: minimum fall height
    n.d cm
  • Note: After 25 frost-defrost cycles the test pieces did not present any modifications in colour or structure.

Companies

Processing
Extraction