Bianca Rubella Gneiss Overview:

Bianca Rubella Gneiss is a visually appealing quarzitic gneiss obtained from the regions of Beura-Cardezza, Domodossola, Trontano, and Villadossola in the Provincia del Verbano Cusio Ossola, Italy. Its aesthetic qualities, comprising a soothing blend of semi-white, off-white, and silver colors, make it a popular choice for various architectural and design applications.

Physical and Mechanical Properties:

1. Water Absorption:

• By volume: 0.75%
• Other measurement: 0.29%

2. Density:

• 2740 kg/m³

3. Flexural Strength:

• 22.9 MPa

4. Compressive Strength:

• Range: 131.9 - 133.86 MPa

5. Hardness:

• Likely comparable to other gneisses, but specific measurements should be confirmed through detailed testing.

6. Porosity:

• Low, contributing to its durability and suitability for exterior applications.

7. Slip Resistance:

• Typically high, though exact values require surface-specific testing.

Chemical and Mineral Composition (% by Weight):

• Silica (SiO2): High, due to its quarzitic nature.
• Aluminum Oxide (Al2O3): Moderate presence.
• Potassium and Sodium Oxides (K2O, Na2O): Typical of feldspar content.
• Other minerals:
• Likely includes quartz, feldspar, mica, and possibly small amounts of other accessory minerals.

Usage:

• Exterior Cladding and Facades: Due to its durability and aesthetic appeal.
• Flooring and Paving: Ideal for high-traffic areas owing to its strength.
• Interior Applications: Includes countertops, wall panels, and decorative stonework.
• Monuments and Sculptures: Suitable for artistic and commemorative purposes.

Maintenance:

• Regular Cleaning: Use neutral pH cleaners to maintain surface integrity.
• Sealing: While generally low-porosity, periodic sealing can enhance longevity and appearance, especially in high-use or exterior installations.
• Repair and Restoration: Requires occasional assessment; professional restoration may be necessary for damage.

Available Cutting Sizes (cm):

• Slabs: Commonly in sizes up to 250 x 150 cm, variable based on quarry capabilities.
• Tiles: Size options include 30 x 30, 60 x 60, 30 x 60, and custom dimensions as needed.

Common Surface Finish Options:

1. Polished: For a glossy, reflective surface.
2. Honed: Smooth but not reflective, ideal for more subdued applications.
3. Sandblasted: For a textured, slip-resistant finish.
4. Bush-Hammered: A rugged, tactile surface often used for exterior flooring.

Bianca Rubella Gneiss, with its robust mechanical properties and captivating appearance, is an excellent choice for both practical and decorative purposes. Its adaptability in size and finish ensures that it can meet a wide range of project specifications while maintaining elegance and functionality.

FEATURES PHYSICAL-MECHANICAL

COMPRESSION BREAKING LOAD ... 131.90 MPa

TENSILE STRENGTH TO COMPRESSION AFTER FREEZING EYELASHES ... 133.86 MPa

INHIBITION COEFFICIENT ... 0,003 %

LOAD UNITARY FLEXURAL STRENGTH ... 22.9 MPa

IMPACT RESISTANCE ... 59 cm

FRICTION WEAR ...3,50

UNIT VOLUME WEIGHT ...2740 Kg/m3