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DY Black Granite

DY Black Granite

Granite

Viet Nam

About

Item Details

Material Type:
Granite
Origin:
Viet Nam (Phú Yên province, South Central Coast of Vietnam)
Recommended Usage:
Kitchen and bathroom countertops, monuments, building stone, ornamental stone, stairs, interior, exterior wall and floor applications, mosaic, waterjet pattern, wall panels, table tops, window sills, balustrades, columns, wall and pool copings, pool pavers, sculptures, fireplaces, pavers, cobbles, curbstone
Additional Names:
Da Yi Black Granite, PY Black Granite, Black Phu Yen Dibase, Phu Yen Black Granite, Phu Yen Black Diabase, in China stone market:达亿黑(Dá Yì Hēi)
Finished Surface:
Polished,Flamed,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Acid Washing,Combed,Leathered,Water Jet,Chiseled,Pickling

Testing

Water Absorption:
≤0.2–0.5% by weight
Density:
2850–3000 Kg/m³
Flexural Strength:
15–30 MPa
Compressive Strength:
225–300 MPa

Description

Dy Black Granite is a fine-grained black diabase, commercially classified as black granite, quarried in Vietnam. It is an intrusive igneous stone known for its dense crystalline structure, excellent durability, and uniform appearance.

Color & Appearance:

  • Deep charcoal to jet black background
  • Extremely consistent color distribution
  • Minimal visible mineral contrast, creating a monolithic black surface

Texture & Pattern:

  • Texture: Fine-grained, compact, equigranular crystalline structure
  • Pattern: Nearly uniform, non-directional; no veining, only subtle micro-crystalline speckling visible at close range
  • Visual Effect: Clean, modern, and architectural; ideal for minimalist and high-contrast designs

Mineral & Chemical Composition

Mineralogical Composition (% by weight – typical diabase)

  • Plagioclase Feldspar: 45–60%
  • Pyroxene (Augite): 30–45%
  • Olivine / Hornblende: 5–10%
  • Accessory minerals (Magnetite, Ilmenite): <5%
  • Quartz: Trace to none

Chemical Composition (% by weight – typical range)

  • SiO₂: 45–55%
  • Al₂O₃: 14–18%
  • FeO + Fe₂O₃: 8–14%
  • MgO: 6–10%
  • CaO: 8–12%
  • Na₂O + K₂O: 2–4%
  • TiO₂, MnO, P₂O₅: <2%

(Exact values may vary by quarry block and laboratory testing.)

Physical & Mechanical Properties

  • Mohs Hardness: 6–7
  • Density: 2.85–3.0 g/cm³
  • Compressive Strength: 225–300 MPa
  • Flexural (Bending) Strength: 15–30 MPa
  • Water Absorption: ≤0.2–0.5% by weight
  • Porosity: Very low
  • Freeze–Thaw Resistance: Excellent
  • Abrasion Resistance: Very high

Available Sizes & Cutting Options

Blocks:

  • Large quarry blocks suitable for gang-saw slab production
  • Consistent internal structure allows high slab yield

Slabs:

  • Thickness: 2 cm, 3 cm (standard), thicker options available on request
  • Jumbo Slabs: Up to approximately 300 × 200 cm (subject to block yield)

Tiles & Cut-to-Size:

  • Standard formats: 30×30, 60×60, 30×60 cm
  • Custom cutting available for projects, stairs, thresholds, curbstones, and architectural elements

Surface Finish Options

  • Polished: High-gloss, deep black mirror finish
  • Honed: Smooth matte surface with soft reflection
  • Leathered: Textured satin finish with enhanced slip resistance
  • Flamed / Thermal: Rough, anti-slip finish for exterior use
  • Sandblasted / Brushed: Architectural textured finishes

Applications

Interior Use:

  • Kitchen countertops and islands
  • Bathroom vanity tops
  • Flooring and wall cladding
  • Fireplace surrounds
  • Table tops and furniture elements
  • Stairs

Exterior Use:

  • Façade cladding
  • Paving and terraces
  • Pool coping
  • Stairs and steps
  • Outdoor kitchens
  • Monuments and memorials
  • Sculptural elements
  • Water features
  • High-precision architectural components

Maintenance & Care

  • Sealing: Recommended for polished surfaces to enhance stain resistance
  • Cleaning: Use pH-neutral stone cleaners or mild soap and water
  • Avoid: Acidic or abrasive cleaners
  • Daily Care: Wipe spills promptly, especially oils and pigmented liquids
  • Exterior Maintenance: Periodic washing to remove environmental residue

Key Advantages

  • Extremely uniform deep black color
  • High mechanical strength and durability
  • Low water absorption and porosity
  • Suitable for heavy-traffic and exterior applications
  • Competitive alternative to premium black granites

FAQ

Can 3 cm thick DY Black Granite pavers be used for a driveway?

Using 3 cm thick DY Black Granite pavers for a driveway is possible, but there are several factors to consider to ensure the durability and longevity of the installation: 1. **Strength and Quality**: Granite is generally a very strong and durable natural stone, making it suitable for high-traffic areas such as driveways. However, the specific quality and structural integrity of the DY Black Granite should be assessed to ensure it can withstand the weight of vehicles. 2. **Sub-base Preparation**: Proper sub-base preparation is crucial when using granite pavers for a driveway. The sub-base should be compacted and stable to support the weight of vehicles and to prevent shifting or settling. 3. **Installation Technique**: Professional installation is recommended to ensure the pavers are laid correctly. This includes maintaining proper joint spacing and using a suitable sand or adhesive between the pavers to provide stability and prevent movement. 4. **Thickness Consideration**: While 3 cm (approximately 1.18 inches) is typically thick enough for pedestrian traffic, driveways usually demand more thickness due to the loading stress from vehicles. A standard recommendation for paved driveways includes a thickness of at least 5 cm (about 2 inches) or more, particularly for frequent vehicle use. Therefore, while 3 cm may work, it is on the lower end of thickness suitable for driveways, and thicker pavers might be preferable for better resilience and longevity. 5. **Vehicle Weight**: Consider the type and weight of vehicles that will regularly use the driveway. If the driveway frequently supports heavier vehicles (e.g., SUVs, trucks), a thicker paver or additional reinforcement might be necessary to prevent cracking or damage. 6. **Local Climate**: In areas with freeze-thaw cycles, the potential for paver movement or damage increases, especially if the pavers and sub-base are not properly installed. The granites ability to resist these conditions should be considered. In summary, while 3 cm thick DY Black Granite pavers can potentially be used for a driveway, careful consideration of the mentioned factors and potentially opting for a thicker paver might result in a more robust and durable installation. Consulting with a professional contractor experienced with granite installations for driveways would be advisable.

How thick is a standard DY Black Granite tactile paver?

A standard DY Black Granite tactile paver is typically about 3 centimeters (approximately 1.18 inches) thick. However, the thickness can vary depending on specific project requirements and manufacturer specifications. It is advisable to check with the supplier or manufacturer for exact measurements for your specific application.

How far apart should DY Black Granite parking bollards be installed?

When installing DY Black Granite parking bollards, it’s important to ensure they are spaced appropriately to provide effective security and guide traffic while maintaining accessibility. Here are general guidelines for spacing: 1. **Standard Spacing**: Bollards are typically spaced between 3 to 5 feet apart (approximately 1 to 1.5 meters). This spacing is ideal for preventing vehicle access while allowing pedestrian traffic. 2. **Specific Use Cases**: - **Pedestrian Areas**: Ensure there is enough space between bollards to accommodate individuals with disabilities, including those using mobility devices. The bollards should comply with the Americans with Disabilities Act (ADA) or similar regulations in your jurisdiction, which often require a minimum width of 36 inches (about 91 cm) for accessible pathways. - **Vehicle Restriction**: If the goal is to prevent vehicle entry, they should be close enough to block vehicles, potentially reducing spacing to around 3 feet (approximately 1 meter) or even closer, depending on vehicle size and local regulations. 3. **Local Codes and Regulations**: Always check local building codes and regulations, as these can dictate specific spacing requirements based on the intended use and location. 4. **Manufacturer Guidelines**: Consult any specific instructions or guidelines provided by the manufacturer of the DY Black Granite bollards, as they may have additional recommendations or requirements. Proper installation ensures safety, compliance with legal standards, and functional efficacy of the bollards.

Can DY Black Granite , black diabase stone, be used for street kerbstones?

Yes, DY Black Granite or black diabase can be used for street kerbstones. Both materials are known for their durability, hardness, and resistance to weathering, making them suitable for outdoor applications like kerbstones. Granite in particular is a popular choice for paving and kerbstones due to its strength and longevity. Diabase, often known as dolerite or microgabbro, shares similar properties and is also suitable for these applications. However, it is important to consider the specific requirements of the project, including aesthetic preferences, budget, and local availability, when selecting the type of stone.

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