National Orange Limestone

About
Item Details
- Material Type:
- Limestone
- Origin:
China (Henan province) - Recommended Usage:
- Kitchen and bathroom countertops, monuments, building stone, ornamental stone, building stone, stairs, interior wall and floor applications, mosaic, waterjet pattern, wall panels, table tops, columns, fireplace surround
- Additional Names:
- Guocheng Limestone, Guó Chéng Limestone, Orange-Brown Limestone, Grainy Guocheng Limestone, in China stone market: 国橙 (Guó Chéng)
- Finished Surface:
- Polished,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Acid Washing,Combed,Leathered,Water Jet,Filled,Chiseled,Pickling
Testing
- Water Absorption:
- 0.6% - 0.8% by weight
- Density:
- 2500 - 2700 Kg/m³
- Flexural Strength:
- 8 - 12 MPa
- Compressive Strength:
- 90 - 130 MPa
Description
National Orange Limestone is a distinctive, medium to large grain limestone quarried in Henan Province, China. Known for its warm cedar brown base with subtle earth gray shades and tawny hues, this limestone features a conglomerated structure that makes it a unique choice for various architectural applications.
Texture and Pattern:
Texture: Medium to large grain with a slightly rough, natural texture due to its conglomerated composition.
Pattern: The stone showcases a warm cedar brown base, interspersed with tawny and gray hues, giving it a rustic and natural aesthetic. The varying grain sizes add depth and dimension, making each slab distinct and appealing.
Test Results:
Density (g/cm³): 2.50 - 2.70 g/cm³
Compressive Strength (MPa): 90 - 130 MPa
Flexural Strength (MPa): 8 - 12 MPa
Water Absorption Rate: 0.6% - 0.8%
Porosity: 0.5% - 0.8%
Slip Resistance (Dry): 0.65 - 0.75 Slip Resistance (Wet): 0.45 - 0.55
Chemical and Mineral Composition (% by weight):
- Calcium Carbonate (CaCO3): 85% - 90%
- Quartz (SiO2): 5% - 7%
- Clay Minerals: 3% - 4%
- Iron Oxides (Fe2O3): 1% - 2%
- Magnesium Oxide (MgO): 0.5% - 1%
Hardness:
Mohs Hardness: 3 - 4 Due to its moderate hardness, National Orange Limestone is ideal for interior and exterior applications but requires sealing and protection for heavy-duty areas.
Porosity:
Porosity Range: 0.5% - 0.8% Low to medium porosity ensures durability and resistance to weathering, though regular sealing is recommended to maintain its surface integrity and prevent water infiltration.
Slip Resistance:
Slip Resistance (Dry): 0.65 - 0.75 (suitable for dry conditions)
Slip Resistance (Wet): 0.45 - 0.55 (suitable for exterior use with a non-polished finish)
Usage:
National Orange Limestone is versatile and can be used for various applications, including:
- Flooring: Suitable for both indoor and outdoor flooring. Honed and brushed finishes provide excellent slip resistance.
- Wall Cladding: Adds a natural and earthy look to interior and exterior walls.
- Countertops and Vanity Tops: Perfect for bathroom and kitchen surfaces, though sealing is recommended
- Pavers and Pool Copings: Ideal for outdoor landscaping due to its weather-resistant properties.
- Architectural Elements: Used for window sills, columns, stair treads, and decorative features.
Maintenance:
To maintain the beauty and durability of National Orange Limestone:
- Regular Cleaning: Use a pH-neutral cleaner and a soft cloth or mop to clean the surface. Avoid harsh chemicals or acidic solutions.
- Sealing: Apply a high-quality sealant annually to prevent stains and maintain its natural luster.
- Scratch Prevention: Avoid dragging heavy objects across the surface to prevent scratches and wear.
Cutting Sizes (cm):
National Orange Limestone is available in various standard and custom sizes:
- Slabs: 120 x 240 cm, 160 x 320 cm, and custom sizes.
- Tiles: 30 x 30 cm, 60 x 60 cm, 60 x 120 cm, 100 x 100 cm, and custom cut-to-size pieces.
- Thickness Options: Available in 2 cm and 3 cm for slabs and 1.5 cm to 2 cm for tiles.
Surface Finish Options:
National Orange Limestone is available in multiple finishes to suit diverse applications:
- Polished Finish: High-gloss surface that enhances the natural color and veining, ideal for interior applications.
- Honed Finish: Smooth, matte surface that provides a soft and subtle look while maintaining slip resistance.
- Brushed Finish: Lightly textured surface with a slightly weathered appearance, suitable for indoor and outdoor use.
- Sandblasted Finish: Rougher surface with increased slip resistance, ideal for outdoor areas such as pool surrounds.
- Tumbled Finish: Provides a rustic, antique appearance with softened edges, suitable for outdoor landscaping and decorative features.
- Leathered Finish: Slightly textured and matte, enhancing the natural texture and veining while providing better grip.
National Orange Limestone is a durable and elegant natural stone with warm cedar brown tones, gray shades, and tawny hues. Its versatility makes it suitable for a wide range of applications, including flooring, wall cladding, countertops, and outdoor landscaping. With low porosity, moderate hardness, and various surface finishes available, it is an excellent choice for both residential and commercial projects. Proper maintenance and periodic sealing ensure the longevity and beauty of this unique limestone.









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