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G312 Granite

Granite

China

About

Item Details

Material Type:
Granite
Origin:
China (Jiangxi Province)
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:
Shandong Green Granite, Shandong Evergreen Granite, Beida Green Granite, Beida Qing Granite, Bei Da Green Granite, G3607 Granite, North Daqing Granite, in China Stone Market:北大青(Běidà Qīng), G312 Granite
Finished Surface:
Polished,Flamed,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Acid Washing,Combed,Leathered,Water Jet,Filled,Chiseled,Pickling

Testing

Water Absorption:
≤ 0.30% by weight
Density:
2650–2700 kg/m³
Flexural Strength:
12–18 MPa
Compressive Strength:
150–180 MPa

Description

G312 Granite is a durable and visually striking natural stone quarried in the Jiangxi Province of China. G312 Granite is recognized for its fine- to medium-grain texture, dark petroleum-green base color, and distinct black speckled pattern, making it a reliable and elegant choice for a wide range of architectural and design applications.

Appearance & Texture

  • Color Base: Dark petroleum green
  • Pattern: Uniform distribution of black mineral speckles, giving the stone depth and richness
  • Grain Size: Fine to medium
  • Overall Look: Sophisticated, understated, and suitable for both modern and classical design themes

Physical & Mechanical Properties

(Typical values for this granite type; actual test data may vary by block/batch)

  • Density : ~2,650–2,700 kg/m³
  • Water Absorption : ≤ 0.30% by weight
  • Compressive Strength : 150–180 MPa
  • Flexural Strength : 12–18 MPa
  • Abrasion Resistance : High
  • Hardness (Mohs) : 6–7

Chemical & Mineral Composition (Approximate % by weight)

Mineral Composition

  • Quartz: 20–30%
  • Feldspar (Plagioclase): 50–60%
  • Biotite / Hornblende: 10–15%
  • Other Accessory Minerals: 1–5%

Chemical Composition

  • SiO₂: 60–68%
  • Al₂O₃: 14–18%
  • Fe₂O₃ + FeO: 3–5%
  • CaO: 2–4%
  • MgO: 1–3%
  • Na₂O + K₂O: 3–6%

Applications

G312 Granite is known for its versatility and durability, making it ideal for:

Interior Uses

  • Kitchen countertops
  • Bathroom vanity tops
  • Interior flooring
  • Wall cladding
  • Staircases

Exterior Uses

  • Building façades
  • Outdoor paving
  • Landscaping elements
  • Pool surrounds
  • Monuments and public installations

Its low porosity and excellent strength make it highly suitable for high-traffic and outdoor environments.

Maintenance

Easy to maintain, requiring only regular cleaning with mild detergents Periodic sealing is recommended for interior polished surfaces Highly resistant to stains, scratches, and weathering

FAQ

Can 1.8cm thick G312 Granite be used for commercial buildings stair steps?

Yes, 1.8 cm thick G312 Granite can be used for stair steps in commercial buildings, but there are several factors to consider: 1. **Strength and Durability**: Granite is a strong and durable material, suitable for high-traffic areas like stairways in commercial buildings. However, the thickness of 1.8 cm is on the thinner side for stair treads, which typically range from 2 cm to 3 cm or more for added strength and durability. 2. **Load-Bearing Capacity**: While granite itself is quite strong, thinner slabs can be susceptible to cracking or breaking under heavy load or impact, especially in a commercial setting where foot traffic is high. Reinforcement or support may be necessary. 3. **Installation and Support**: Proper installation is crucial. The granite should be securely fixed and adequately supported underneath to prevent flexing or movement, which could lead to cracking over time. 4. **Slip Resistance**: The surface finish of the granite should be considered for safety. Polished granite can be slippery, so a honed or flamed finish, which offers better slip resistance, may be more appropriate for stair treads. 5. **Building Codes and Regulations**: Ensure that the granite stair treads meet local building codes and safety regulations, which may dictate specific requirements for thickness, slip resistance, and overall installation. 6. **Cost Considerations**: Thinner granite can be less expensive, but any savings may be offset by the need for additional structural support or reinforcement. In summary, while 1.8 cm granite can be used for commercial stair steps, its important to ensure proper installation and consider the potential need for additional support to ensure safety and longevity. Consulting with a structural engineer or professional installer is recommended to ensure compliance with safety standards and building codes.

Do fruit juices stain the surface of G312 Granite?

G312 Granite, like many natural stones, has a degree of porosity which means it can potentially absorb liquids and become stained if not properly sealed. Fruit juices, particularly those that are highly pigmented like grape, cranberry, or pomegranate juice, can stain the surface of granite if they sit on the surface for an extended period or if the granite is not adequately sealed. To protect your G312 Granite from stains, ensure that the surface is sealed with a high-quality penetrating sealer. Regular maintenance, such as cleaning up spills promptly and resealing the granite as needed (usually every 1 to 5 years depending on usage and the type of sealer used), can help prevent staining. If a spill occurs, clean it up quickly using a mild detergent or a specialized stone cleaner, and avoid using harsh chemicals that can damage the stone or its sealant.

Is 3cm thick G312 Granite durable enough for use as walkway pavers?

Yes, 3 cm thick G312 granite should be quite durable for use as walkway pavers. Granite is one of the hardest natural stones, providing excellent strength and durability, making it well-suited for outdoor applications like walkways. The 3 cm thickness ensures sufficient structural integrity to withstand foot traffic and weather conditions. When using granite as pavers, it is also essential to consider the finish and texture to ensure it is not too slippery when wet. Additionally, proper installation with an appropriate base and jointing material will help enhance the longevity and performance of the granite pavers. Overall, G312 granite is a good choice for durable and aesthetically pleasing walkways.

Does the surface of G312 Granite scratch easily?

G312 Granite, like most granites, is known for its durability and hardness. It generally does not scratch easily. Granite is a natural stone that ranks high on the Mohs scale of mineral hardness, typically around 6 to 7 out of 10, meaning it is quite resistant to scratching from most materials and everyday use. However, it is not entirely scratch-proof. Dropping heavy or sharp objects on the surface or using very hard materials could potentially scratch or chip granite. Regular care and using cutting boards, trivets, and avoiding harsh abrasives when cleaning will help maintain its appearance and prevent scratches.

Can flamed finish G312 Granite be used for pool coping?

Yes, flamed finish G312 Granite can be used for pool coping. The flamed finish provides a textured surface that offers slip resistance, which is ideal for areas around a pool where surfaces can become wet and slippery. Granite is also a highly durable and weather-resistant material, making it well-suited for outdoor applications such as pool coping. However, its always a good idea to consult with a professional to ensure that the specific installation meets all safety requirements and to confirm that G312 Granite is the right choice for your climate and pool design.

Can 1.8 cm thick G312 Granite be used as a commercial kitchen countertop?

Using 1.8 cm thick G312 Granite for a commercial kitchen countertop is generally possible, but there are some considerations to keep in mind: 1. **Thickness**: Commercial kitchen countertops often require a more robust material to handle the heavy use and potential impacts. A 1.8 cm thickness is relatively thin for granite countertops, which are typically 2 cm or 3 cm thick. Thinner granite may need additional support to prevent cracking or breaking under heavy loads. 2. **Support**: If you choose to use 1.8 cm thick granite, it is crucial to ensure proper support, especially in areas with overhangs or where appliances might be placed. Adequate support usually involves plywood backing or metal braces. 3. **Durability**: Granite is a durable material, but in a commercial setting, the constant use and risk of impact might necessitate a thicker slab for added durability. 4. **Maintenance**: Granite requires regular sealing to maintain its resistance to stains and moisture. In a commercial kitchen, frequent cleaning and maintenance will be essential. 5. **Aesthetic and Function**: Depending on the design, the thinner granite might provide a desired aesthetic but ensure it aligns with your functional requirements. Before proceeding with 1.8 cm granite, consult with a professional contractor or a stone supplier familiar with commercial kitchen installations. They can offer guidance on the necessary supports and evaluate whether this thickness will meet your specific needs.

How can I maintain G312 Granite polished office flooring?

Maintaining G312 Granite polished office flooring involves a combination of regular cleaning and preventive care to preserve its appearance and durability. Here’s a comprehensive guide to help you maintain your granite flooring: 1. **Regular Cleaning:** - **Sweeping/Dust Mopping:** Use a soft-bristle broom or a microfiber dust mop regularly to remove dust, dirt, and debris. This prevents scratching the surface. - **Mopping:** Clean the floor with a damp mop using warm water. Avoid using an overly wet mop to prevent water spots and streaks. - **Cleaning Solution:** Use a pH-neutral cleaner specifically formulated for natural stone. Avoid acidic or alkaline cleaners, as they can damage the polished finish. - **Spot Cleaning:** For spills, blot the area immediately with a soft cloth. Avoid wiping, as this can spread the spill. Clean with water and mild detergent if necessary. 2. **Sealing:** - Granite is porous, so it’s important to seal the flooring. Depending on usage and foot traffic, sealing may need to be done annually. - Perform a water test: sprinkle water on the surface and observe if it beads. If it absorbs into the stone, it’s time to reseal. - Follow the manufacturer’s instructions for applying a penetrating or impregnating sealer. Ensure the floor is clean and dry before application. 3. **Preventive Measures:** - **Rugs and Mats:** Place mats at entrances to reduce dirt and grit being tracked onto the floor. - **Furniture Protection:** Use felt pads or rubber castors on furniture legs to prevent scratching. - **Shoes:** Encourage wearing non-abrasive footwear to minimize scratches and scuffs. 4. **Avoid Harsh Chemicals:** - Stay away from bleach, vinegar, or any acidic cleaners. These can etch the granite, dulling its polish and causing damage. 5. **Polishing:** - Over time, the polish may wear off. Use a granite polish periodically to restore luster. Ensure the product is suitable for polished granite and apply using a soft, clean cloth. - For significant wear or etching, consider hiring a professional stone restoration service to hone and polish the surface. 6. **Professional Maintenance:** - If in doubt or for large areas, professional cleaning and maintenance services may be beneficial. By sticking to these maintenance practices, your G312 Granite flooring should remain beautiful and functional for many years to come.

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