Post Your Needs

Nero Kempo Basalt

Nero Kempo Basalt

About

Material Type:
Basalt
Origin:
China
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:
Black Kempo Basalt, Kempo Black Basalt, Gimpo Black Basalt, Gimpo Black Basalt, in China stone market:金浦黑(Jīnpǔ hēi)
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:
0.3 – 0.5% by weight
Density:
2880 – 2950 kg/m³
Flexural Strength:
14 �C 18 MPa
Compressive Strength:
160 �C 180 MPa

Description

Quarried primarily in Fujian Province, China, Nero Kempo Basalt (also marketed as Nero Basalto or Basalt Black) is a fine-grained, dense, and durable charcoal black volcanic stone widely used in modern architectural applications due to its minimalistic appearance and structural integrity.

Appearance & Texture

  • Color: Charcoal to deep black (uniform appearance)
  • Grain: Very fine-grained crystalline matrix (sub-millimeter scale)
  • Texture: Homogeneous and smooth
  • Pattern: Mostly uniform; may include subtle vesicular (pores) textures or tiny specks depending on the block
  • Visual Tone: Matte to slightly reflective depending on finish

Physical & Mechanical

  • Density .... 2880 – 2950 kg/m³ (2.88 – 2.95 g/cm³)
  • Water Absorption .... 0.3 – 0.5% by weight
  • Porosity .... <1% (very low, non-porous)
  • Compressive Strength .... 160 – 180 MPa
  • Flexural Strength .... 14 – 18 MPa
  • Abrasion Resistance .... High (ASTM C241 ≤ 20 mm)
  • Hardness (Mohs) .... 6 – 7

Slip Resistance (DIN 51130)

  • Flamed/Brushed: R11
  • Honed: R9
  • Sandblasted: R12

Chemical Composition (% by weight)

  • Silicon Dioxide (SiO2) .... 47–52%
  • Aluminum Oxide (Al2O3) .... 14–17%
  • Iron Oxide (Fe2O3) .... 8–11%
  • Calcium Oxide (CaO) .... 8–10%
  • Magnesium Oxide (MgO) .... 5–7%
  • Potassium Oxide (K2O) .... 1–2%
  • Sodium Oxide (Na2O) .... 2–3%
  • Titanium Oxide (TiO2) .... 1% or less

Mineralogical Composition

  • Plagioclase Feldspar (Labradorite/Anorthite) – ~40%
  • Pyroxene (Augite) – ~25%
  • Olivine – ~10%
  • Magnetite and Ilmenite (iron-titanium oxides) – ~5–7%
  • Minor Quartz/Glassy Matrix – Trace

Standard Cutting Sizes (cm)

Tiles: 30×30, 30×60, 40×40, 60×60, 60×90, 60×120

Slabs:

  • Standard thicknesses: 2 cm and 3 cm
  • Custom sizes for countertops, stairs, facades
  • Cut-to-size elements: Stair treads, risers, coping, lintels, sills, ventilated facade panels

Surface Finish Options

  • Honed: Smooth matte, deep charcoal tone, ideal for interiors
  • Polished: Rare, but possible for decorative use; slightly reflective
  • Flamed: Textured anti-slip finish, enhances light gray hues
  • Brushed: Soft touch, suitable for indoor floors
  • Sandblasted: Uniform anti-slip surface with lightened tone
  • Bush-hammered: Rugged, high-slip resistance for exteriors
  • Leathered: Satin matte with tactile texture
  • Split-face/Natural: Rustic wall cladding or landscape stone

Applications & Usage

  • Interior: Floor and wall tiles, vanity tops, countertops, stairs
  • Exterior: Façades, pavers, cladding, pool surrounds, coping, benches
  • Urban Design: Street furniture, fountains, monuments
  • Landscaping: Pathways, edging, retaining walls
  • Ventilated Facades: Thanks to low water absorption and high strength
  • High-Traffic Areas: Excellent abrasion and weather resistance

Maintenance Guidelines

  • Routine Cleaning: Mild neutral detergent with water
  • Avoid Acids: Acidic or highly alkaline cleaners may etch the stone
  • Sealing: Optional due to low porosity, but enhances color and ease of cleaning
  • Stain Prevention: Promptly remove oil or grease in exterior settings
  • Indoor Use: Occasional resealing in bathrooms or kitchens if honed

Performance Summary

Weather Resistance .... Excellent (freeze/thaw stable)

Durability .... Very High

Slip Resistance .... High (with flamed or brushed finishes)

Aesthetic Versatility .... High (modern, minimal, luxurious)

Sustainability .... Long lifecycle, recyclable

FAQ

Will 2cm thick Nero Kempo Basalt countertop crack with heat?

It is unlikely that a 2cm thick Nero Kempo Basalt countertop will crack from heat, as basalt is known for its durability and resistance to high temperatures. However, it is always important to exercise caution when placing hot pots or pans directly on the countertop surface, as extreme and sudden changes in temperature can potentially cause cracking or damage. It is recommended to use trivets or hot pads to protect the surface from direct heat exposure.
Read question details

Can 3cm thick Nero Kempo Basalt pavers be used for a driveway?

It is not recommended to use 3cm thick Nero Kempo Basalt pavers for a driveway. These pavers are relatively thin and may not be able to withstand the weight of vehicles driving over them regularly. It is best to use thicker and more durable pavers, such as 6cm or 8cm thick, for driveways to ensure they can withstand the pressure and weight of vehicles.
Read question details

Is 3cm thick polished Nero Kempo Basalt good for window sills?

Yes, 3cm thick polished Nero Kempo Basalt would make a good choice for window sills. Basalt is a durable and hard-wearing natural stone that can withstand daily wear and tear, making it a suitable material for window sills. Additionally, the polished finish will provide a sleek and stylish look to your windows. Just make sure to properly seal the basalt to prevent any staining or damage over time.
Read question details

How to make Nero Kempo Basalt stairs less slippery?

1. Apply a non-slip coating: Purchase a non-slip coating specifically designed for natural stone surfaces like Nero Kempo Basalt. Apply the coating according to the manufacturers instructions to create a textured surface that will provide better traction on the stairs. 2. Add anti-slip treads: Install anti-slip tread strips or mats on the surface of the stairs. These adhesive strips provide extra grip and traction to help prevent slipping accidents. 3. Clean regularly: Keep the stairs clean and free of dust, dirt, and debris that can make the surface slippery. Regularly sweep or vacuum the stairs, and mop with a mild detergent or stone-safe cleaner to remove any buildup that could contribute to slipperiness. 4. Increase friction with sand or grit: Mix sand or fine grit into a clear sealant or epoxy coating before applying it to the stairs. This will create a rougher surface texture that increases friction and helps prevent slipping. 5. Install handrails: Adding handrails to the sides of the stairs can provide additional support and stability, especially for elderly or disabled individuals who may be more prone to slipping. Position the handrails at a comfortable height and securely fasten them to the walls or posts. 6. Use caution signs: Place caution signs or mats at the top and bottom of the stairs to alert people to the potential slipperiness of the surface. This can help remind individuals to watch their step and tread carefully on the stairs.
Read question details

Are polished Nero Kempo Basalt terrace pavers slippery?

Polished Nero Kempo Basalt terrace pavers may become slippery when wet or when a layer of water, ice, or snow is present on the surface. It is important to take precautions when walking on polished stone surfaces to prevent slipping or falling. Adding a non-slip sealant or coating to the pavers can help improve traction and reduce the risk of slipping. Additionally, keeping the surface clean and free of debris or moisture can also help prevent slipping accidents.
Read question details

Will heat damage Nero Kempo Basalt countertops?

Nero Kempo Basalt countertops are heat-resistant, but it is still recommended to use trivets or hot pads when placing hot pans or pots directly on the surface to prevent any potential damage. Excessive heat can still cause damage or discoloration to the countertop over time, so it is best to use caution when dealing with high temperatures.
Read question details

Can scratches in Nero Kempo Basalt kitchen countertop be fixed?

Scratches in Nero Kempo Basalt kitchen countertops can be fixed, but it depends on the severity of the scratches. For minor scratches, you can try using a mild abrasive cleaner or a special granite polish to buff out the scratches. For deeper scratches, it may be best to consult with a professional stone restoration specialist who can assess the damage and recommend the best course of action. They may be able to repair the scratches using a process called honing and polishing, which involves removing the top layer of the countertop to reveal a fresh surface. Its always best to take preventative measures to avoid scratches on your kitchen countertop, such as using cutting boards and trivets to protect the surface when cooking or preparing food.
Read question details

Products & Prices

Nero Kempo Basalt Products

Post Your Need

Hot Basalt

New Basalt

Post Your Request

The request includes:
  1. surface finished, size
  2. quantity required