Jura Grau Blau Limestone: Overview

Jura Grau Blau Limestone is a distinctive and versatile natural stone quarried in the Fränkische Alb region of Germany, specifically Titting-Kaldorf. This limestone is celebrated for its rustic appearance and varied color palette that ranges from warm golden tones to cool earthy grays. It often features unique fossil segment patterns, adding to its aesthetic appeal.

Physical and Mechanical Properties

• Water Absorption: 0.44%
• Density: 2600 kg/m³
• Flexural Strength: 13.8 MPa
• Compressive Strength: 146.0 MPa
• Hardness: Medium hardness, suitable for interior and exterior use.
• Porosity: Low porosity, contributing to its durability and low maintenance.
• Slip Resistance: Generally good, but can vary depending on the surface finish.

Chemical and Mineral Compositions

• Calcium Carbonate (CaCO₃): Dominant component, typically over 90%
• Silica (SiO₂): Approximately 2-4%
• Iron Oxides (Fe₃O₄ and Fe₂O₃): Approximately 0.5-2%
• Minor Trace Elements: Including magnesium, clay minerals, and organic compounds.

Usage

• Interior Applications: Suitable for flooring, wall cladding, countertops, staircases, and decorative elements due to its aesthetic appeal.
• Exterior Applications: Used for facades, paving, and landscaping projects given its durability and weathering resistance.
• Commercial and Residential Projects: Often seen in hotels, shopping malls, and private residences.

Maintenance

• Regular Cleaning: Use neutral pH cleansers to maintain its appearance and integrity.
• Sealing: Periodic sealing might be required, depending on the area of application to enhance its resistance to staining and moisture.
• Avoid Acidic Cleaners: To prevent etching and long-term damage to the surface.

Cutting Sizes and Common Surface Finish Options

• Common Cutting Sizes: Typically available in standard tiles, slabs, and custom-cut dimensions, commonly ranging from small tiles (30x30 cm) to large slabs (240x120 cm).
• Surface Finishes:
• Polished: Provides a glossy, reflective surface.
• Honed: Offers a smooth, matte finish with a slightly dull appearance.
• Brushed: Creates a textured, antique effect.
• Tumbled: Provides a more rustic and aged appearance.
• Sandblasted: Yields a rough surface texture for increased slip resistance.

Jura Grau Blau Limestone is a preferred choice for both architects and homeowners due to its distinct visual appeal and robust physical characteristics. Its versatility allows it to blend seamlessly into both modern and traditional settings, while its durability ensures a long-lasting application.