Ataija Azul is a gray / blue limestone with a fine grain and a relatively uniform bottom. This stone has areas with darker shades as well as some occasional darker bending. This is one of the main variations of this type of stone, which also has a beige color variation.
This is one of the hardest limestones in Portugal, and is also one of the few options in terms of gray color, which is an increasingly limited color.
Compressive strength: 1650 kg / cm2; Flexural strength: 105 kg / cm2; Porosity: 0.9%; Water absorption: 0.4%
Due to its great hardness and limited block size, Ataija Azul is mainly used for street pavement with some thickness but small dimensions. This is also a preferred stone for landscaping, some facade, floor and decoration applications.