Azul Valverde Alcanede Limestone Santarem Roufimar





Azul Valverde Alcanede Limestone Santarem Roufimar

Azul Valverde Alcanede Limestone Santarem Roufimar


Azul Valverde Alcanede Limestone Santarem Roufimar

Localization
District - SANTARÉM
Municipality - SANTARÉM
Parish - ALCANEDE
Site - COVÃO ALTO


Macroscopic Description
Bluish-grey limestone with disperse small stains of lighter tonality and coarse elements, calciclastic and little bioclastic.

Prevailing Applications
Flooring and cladding, for interiors in preference.

Physio-Mecanical Properties
1. Compression breaking load 1500 kg/cm2
2. Compression breaking load after freezing test 1500 kg/cm2
3. Bending strength 150 kg/cm2
4. Volumetric weight 2640 kg/m3
5. Water absorption at N.P. conditions 0.5 %
6. Apparent porosity 1.2 %
7. Thermal linear expansion coefficient max. val. 3.1 x 10 -6 perº C
8. Abrasion test 2.6 mm
9. Impact test: minimum fall height 40 cm
Obs. In general, frost resistance is more than 48 freeze-thawing cycles, although it is advisable to perform always the frost test due to the variability of the behaviour of some varieties of this stone

 
General Description of the Quarry
Disposed as an amphitheatre and parallel to a E-W dolerite vein, 2.5 to 3 m thick layers are exploited, the quarries having a 10 m maximum face height. The average attitude of the beds is N 80º W, 10º S. The main fracturation system observed shows distensive character and is sub vertical and parallel to the beds strike. The extracted blocks are, usually, of large dimensions. Their sawing is performed according to the bedding plane. The most common finishings are the honed and polished ones; in the last case, the tonality of the stone becomes grey or brownish-grey. The reserves available are not yet evaluated, but they are surely low.
 



















Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar
Azul Valverde Alcanede Limestone Santarem Roufimar

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