Grey - Gneiss
Italy
Item Details
Quarry Location:
Formazza, Premia, Provincia di Verbano-Cusio-Ossola, Piemonte
Water Absorption:
0.35 By weight %
Density:
2665 kg/m3
Flexural Strength:
15.0 MPa
Compressive Strength:
138.0 - 150.0 MPa
Recommended Usage:
Wall and floor applications, countertops, mosaic, fountains, pool and wall capping, stairs, window sills
Finishing Surface:
Sawn cut, Honed, Natural, Split, river worn, feature rocks
Additional Names:
Hail Granite,Granito Hail Granite,Hail Gneiss
Description:
Petrographic definition: ortogneiss
Mass of the Volume Unit: 2665 Kg/m3
Water Absorption: 0.35 - 0.40%
Simple Compression Breakage Load: 150 MPa
Single compression breaking load after freezing: 138 MPa
Tangent Elastic Module: 47.300 MPa
Secular Elastic Module: 32,000 MPa
Indirect tensile strength by bending: 15.0 MPa
Relative coefficient of Abrasion (referred to the Granito di S. Fedelino): 0.81
Impact resistance: minimum height of fall: 89 cm
Thermal linear expansion coefficient: 6.8 10-5 x 0C-1
Knoop micro-hardness: 5692 MPa
Source: Università di Pisa - Politecnico di Torino