Branco Valongo Limestone

Branco Valongo is a fine-grained limestone quarried in Valongo, Porto, Portugal. It is noted for its light creamy beige color with ivory shades and contains tiny fossil segments. These characteristics make it a sought-after material for various architectural and decorative purposes.

Physical and Mechanical Properties:

• Water Absorption: 3.7%
• Density: 2359 kg/m³
• Flexural Strength: 9.1 MPa
• Compressive Strength: This value is often measured in the range of 50-70 MPa for similar limestones, but the specific value for Branco Valongo should be confirmed through testing.
• Hardness: Though exact Mohs hardness is not specified, limestone typically falls around 3.
• Porosity: Generally, limestone exhibits a porosity of around 5-20%, which impacts its water absorption and overall performance.
• Slip Resistance: Limestone has moderate slip resistance, but specific slip ratings can vary based on the finish applied.

Chemical and Mineral Composition (% by weight):

• Calcium Carbonate (CaCO₃): Typically 90-95%
• Magnesium Carbonate (MgCO₃): Usually found in trace amounts
• Quartz: Small percentage, usually less than 5%
• Other Minerals: Trace amounts of feldspar, clay minerals, and fossilized organic matter

Usage:

• Interior Applications: Wall cladding, flooring, countertops, and detailed architectural elements
• Exterior Applications: Facades, paving, garden features
• Decorative Elements: Custom sculptures, fireplaces, fountains
• Note: Given its porosity and susceptibility to acid, care should be taken in environments that could facilitate staining or erosion.

Maintenance:

• Regular cleaning with a pH-neutral stone cleaner.
• Sealants may be applied to reduce porosity and protect against staining.
• Avoid acidic or abrasive cleaners that can damage the surface.

Available Cutting Sizes (in cm):

• Typical tile sizes: 30x30, 40x40, 60x30, 60x60
• Slabs can be custom cut based on project specifications, often in larger dimensions for countertops or sizeable wall panels.

Common Surface Finish Options:

• Polished: Provides a high-gloss finish, enhancing color and fossil visibility.
• Honed: Matte finish ideal for interior flooring with moderate slip resistance.
• Brushed: Adds texture, providing more grip and a rustic look.
• Sandblasted: Rougher surface, often used for exterior applications due to increased slip resistance.
• Tumbled: Gives an aged appearance, suitable for specific aesthetic requirements.

Branco Valongo limestone is celebrated for its aesthetic appeal and versatility, making it a popular choice in both contemporary and traditional architecture. Its selection should be guided by the specific environmental conditions and maintenance considerations relevant to its intended use.