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Home | Asphalt Rock or Pietra Pece | Limestone of the Iblean Plateau

Asphalt Rock or Pietra Pece

Commercial name: Black Gold Stone typical of Iblean Baroque

Geological guideline: cenozoic calcareous sedimentary rock, formed of calcarenites and alternate calcidurites, impregnated with bitumen. Bank material power of the calcidurites about cm. 50, bank material power of the calcarenites about cm. 90. The bitumen impregnation ranges from 4% to 10%.

  • Homogeneous calcarenites impregnated with bitumen from 7% to 10% as lithic support for sculptures
  • Homogeneous calcirudites impregnated with bitumen from 7% to 10% engraving rock for ornamental use
  • It is not subjected to splintering
  • Colour: from black to matt brown.
  • Insufficient external chromatic frost resistance
  • Easy chromatic recovery through mineral oil treating
  • Excellent internal chromatic frost resistance
  • Cut parallel to the sedimentation planes
  • Craftwork production
  • Good external physical durability
  • Excellent internal physical durability
  • Due to the presence of the bitumen, it is ideal for the use in humid environments.

Geotechnical characteristics of the homogeneous calcidurites (sample cm.4 x 4 x 16)

  • Specific weight Kg/dm3 2005
  • CaCO3 90%
  • Bitumen from 7% to 10%
  • Hardness (Mohs scale) 6
  • Porosity compared with calcidurite 14, 93%
  • Imbibitions by immersion 0, 71%
  • Simple compression strength KN 25, 5
  • Flexure strength KN 6, 5

Asphalt rock products (commercial)

The pietra pece is above all used for industrial manufacture, for making precompressed asphalt tiles, for the urban paving and for the bitumazing or the tarring of the extra urban road basis.

This stone is also an ideal material for ornamental uses, as engraving stone is employed for centuries for the flooring of churches, houses and stairs, for the decoration of altars and balconies, sepulchral stones and many other uses.

NICOSCIA » Lavorazione pietre naturali siciliane da intaglio
Pietra di Comiso - Pietra Arenaria - Pietra Pece
Pietra di Modica - Pietra di Noto - Marmi - Granito
Strada Provinciale Scicli-Donnalucata - C.da Cozzo Pilato - (RG)
Telefono +39 0932 832360 - Fax +39 0932 835345 - E-mail: info@marminicoscia.it

Realizzazione: Studio Scivoletto