Filstone Grey M Limestone

Filstone Grey M Limestone from Portugal features a refined medium-grain grey limestone appearance with stable and consistent coloration, ranging from soft ash grey to elegant cloud grey tones. The stone displays subtle natural movement with fine sedimentary textures and occasional faint mineral shading that create a balanced and contemporary aesthetic suitable for modern architectural applications. Its texture is compact, dense, and homogeneous, offering a smooth and sophisticated surface with controlled visual variation.

Appearance:

• Coloration: Refined medium-grain earth grey tones ranging from soft ash grey to elegant cloud grey.
• Texture: Displays subtle natural movement with fine sedimentary textures and occasional faint mineral shading.
• Aesthetic: Offers a balanced and contemporary appearance suitable for modern architectural applications.
• Surface: Compact, dense, and homogeneous texture providing a smooth and sophisticated finish with controlled visual variation.

Physical and Mechanical Properties

• Apparent density: 2500.00 kg/m³
• Open porosity: 7.52%
• Water absorption (at normal atmospheric pressure): 2.67%
• Capillary water absorption: 10.88 g/m²·s⁰·⁵
• Uniaxial compressive strength (dry conditions): 145.09 MPa
• Uniaxial compressive strength (after freeze–thaw test): 132.00 MPa
• Flexural strength (central load, dry conditions): 14.25 MPa
• Flexural strength (central load, after freeze–thaw test): 12.00 MPa
• Flexural strength (central load, after thermal shock): 13.00 MPa
• Volume change after frost cycles: 30.17% (140 cycles)
• Breaking load at dowel hole: 1945.83 N
• Sound wave propagation (pulse velocity): 5.21 km/s
• Rupture energy: 3.17 J
• Abrasion resistance: 22.42 mm
• Slip resistance (coefficient of friction × 100): Dry sawn surface: 55.83- Wet sawn surface: 70.33

Chemical and Mineral Compositions (% by Weight)

Specific composition data is rarely given due to the natural variance in sedimentary stones; however, typical components may include:

• Calcium Carbonate (CaCO₃): Typically ranges between 80% - 95%.
• Silicates: Trace amounts contributing to structural integrity.
• Iron Oxides (FeO, Fe₂O₃): Trace elements imparting color variations.
• Other Minerals: Minor amounts of clay, mica, or quartz may be present.

Usage

• Applications: Ideal for floor tiles, wall cladding, staircases, countertops, and decorative facades.
• Suitable Environments: Commercial buildings, residential interiors, and modern architectural designs.
• Advantages: Durability, aesthetic versatility, and ease of maintenance.

Maintenance

• Cleaning: Regular sweeping or vacuuming followed by mopping with a pH-neutral stone cleaner.
• Sealing: Periodic application of a stone sealant to enhance resistance to staining and wear.
• Polishing: May require occasional polishing to maintain shine, depending on the chosen finish.

Cutting Sizes (cm)

Typical sizes vary by project requirement but common standard dimensions include:

• Tiles: 30x30, 30x60, 60x60
• Slabs: Custom sizes, commonly up to 120x240
• Thickness: Generally available in 1.5 cm, 2 cm, or 3 cm variants.

Common Surface Finish Options

• Polished: For a high-gloss finish enhancing the stone’s color and pattern.
• Honed: Provides a smooth, satin-like surface, reducing gloss for a contemporary look.
• Brushed: Offers a textured feel, enhancing slip resistance.
• Bush-Hammered: Produces a rugged surface with pronounced texture.
• Sandblasted: Yields a fine-grained textured finish, enhancing slip resistance while retaining visual appeal.

This limestone's refined appearance combined with its physical integrity makes it an ideal selection for various architectural and design projects, balancing aesthetic appeal with practicality.