Azul Valverde

Limestone

Azul Valverde

Limestone

Blueish-grey limestone, with some disperse small stains of lighter tonality and coarse elements, calciclastic and little bioclastic.

Other Names
Azul Valverde – Nomenclature EN 12440, Azul Mónica, Azul Valley
Petrographic Classification
Limestone
Occurrence
Valverde/Terra Velho, Alcanede
Origin
Santarém
Common Uses
Flooring and wall cladding, preferably for interiors.
Available Reserves
Rare
Source
Moura, A. C., & Carvalho, C. (2007). Mármores e calcários ornamentais de Portugal. Gestão de Artes Gráficas SA, Amadora. – (http://www.lneg.pt/download/7310/index.html)

Properties

  • Compression breaking load
    147 Mpa
  • Compression breaking load after freezing test
    147 Mpa
  • Bending strength
    14,8 Mpa
  • Volumetric weigth
    2640 kg/m3
  • Water absorption at N.P. conditions
    0,5 %
  • Aparent porosity
    1,2 %
  • Thermal linear expansion coeficient
    3,1 X 10 -6 perº C
  • Abrasion test (Amsler-Laffon_Cappon)
    2,6 / 20,5 mm
  • Impact test: minimum fall height
    40 cm
  • Note: After 25 frost-defrost cycles the test pieces did not present any modifications in colour or structure.

Companies

Processing
Extraction