Gohare Sandblasted Limestone
Gohare Sandblasted is an Iranian cream limestone with a fine, matte and uniformly textured surface. The finish is produced by directing abrasive particles at the stone under controlled pressure, reducing surface reflection and increasing friction compared with polished stone.
The base stone is extracted near Khorramabad in Lorestan Province, western Iran. Its light cream-to-beige color, fine structure and occasional grey fossils make it suitable for exterior façades, interior walls, walkways, stairs and selected landscape applications.
What is Gohare Sandblasted?
Gohare Sandblasted is created by projecting abrasive particles onto a prepared limestone surface. Before blasting, the stone is normally cut, calibrated and brought to a flat sawn, semi-honed or honed condition.
The blasting process removes very small particles from the face and creates a fine roughness. Unlike polished limestone, it does not produce a glossy reflection. Compared with bush-hammered limestone, sandblasting normally creates a shallower and finer texture.
Sandblasting production process
- Block selection: Quarry blocks are checked for color, fossils and visible structural defects.
- Cutting: Blocks are converted into slabs, tiles, panels or steps.
- Calibration: Pieces are adjusted to the specified thickness.
- Surface preparation: Cutting marks and major irregularities are reduced.
- Sandblasting: Abrasive particles are directed onto the surface under controlled pressure.
- Cleaning: Dust and loose particles are removed.
- Inspection: Texture, dimensions, thickness and edge condition are checked.
The final appearance depends on abrasive type, particle size, pressure, nozzle distance, processing time and the number of passes. A reference sample should be approved before mass production.
Appearance and sorting
Gohare Sandblasted Limestone normally retains the natural cream, beige or greyish-cream color of Gohare limestone. However, the matte texture may make the surface appear slightly lighter than the polished version.
Natural grey fossil patterns may be visible in different concentrations:
- Low-fossil selection: Cleaner and more uniform cream background
- Medium-fossil selection: Moderate fossil distribution
- High-fossil selection: More visible grey fossil markings
This classification describes visual appearance rather than a separate technical quality grade. For large façades, samples from the intended production lot should be approved to maintain coordinated color and fossil distribution.
Benefits of Gohare Sandblasted
- Fine matte texture: The finish reduces direct reflection and glare.
- Increased friction: The textured face may provide more grip than polished stone.
- Controlled production: Machine processing creates a relatively consistent surface.
- Suitable for vertical and horizontal applications: Subject to technical assessment.
- Reduced visibility of minor marks: Small scratches and dust are less noticeable than on glossy stone.
- Custom manufacturing: Dimensions, thickness and texture intensity can be adjusted within production limits.
Technical specifications
The following figures are indicative values for Gohare limestone. Results may vary according to quarry section, block, production lot, specimen direction and laboratory method.
| Property | Indicative value | Reference |
|---|---|---|
| Stone classification | Natural limestone | Geological classification |
| Color | Light cream to beige | Visual sorting |
| Water absorption | Approximately 0.53% | ASTM C97 |
| Bulk density | Approximately 2661 kg/m³ | ASTM C97 |
| Porosity | Approximately 2.59% | ASTM C97 |
| Compressive strength | Approximately 19.4 MPa | ASTM C170 |
| Flexural strength | Approximately 12.4 MPa | Laboratory report |
| Abrasion test result | Approximately 59.31 mm | EN 14157 |
The supplied lot must be checked against its test certificate. ASTM C97/C97M covers absorption and bulk specific gravity testing for dimension stone.
Slip resistance is not determined only by the finish name. Further information about natural-stone testing is available from the Natural Stone Institute.
Applications of Gohare Sandblasted Limestone
Gohare Sandblasted can be considered for the following applications:
- Exterior façades: Panels installed with an approved fixing system
- Interior walls: Lobbies, corridors and reception areas
- Outdoor paving: Courtyards and pedestrian areas with correct drainage
- Exterior stairs: Steps, risers and entrance landings
- Garden pathways: Landscape routes with a stable base
- Public spaces: Subject to traffic and slip-resistance assessment
- Ramps: After testing the finished surface
- Pool surroundings: Only after wet-slip and drainage evaluation
Slip resistance and safety
The surface of Gohare Sandblasted can provide more friction than a polished finish, but it should not be described as completely non-slip. Actual performance depends on blasting intensity, moisture, contamination, footwear, slope and maintenance.
For ramps, public stairs and wet areas, slip resistance should be tested on a sample with the same surface treatment as the final supplied product.
Exterior use and cold climates
Sandblasting does not make limestone waterproof or automatically resistant to freeze–thaw cycles. Exterior suitability depends on lot-specific absorption, stone thickness, installation, drainage and climate.
In cold regions, the installation system must prevent water from remaining beneath or inside the stone. Correct slopes, drainage layers, movement joints and compatible installation materials are important.
A penetrating sealer may reduce moisture penetration and staining, but it cannot replace correct installation or make the stone completely waterproof.
Installation considerations
- Use a stable and properly prepared substrate.
- Provide sufficient slope for water drainage.
- Select mortar or adhesive compatible with limestone.
- Provide movement joints according to the project design.
- Confirm final thickness after surface processing.
- Use approved mechanical fixing for façade panels where required.
Cleaning and maintenance
- Use a pH-neutral cleaner formulated for limestone.
- Avoid vinegar, acidic cleaners and aggressive chemicals.
- Use a soft non-metallic brush for textured surfaces.
- Remove mud, salts and organic contamination regularly.
- Do not use uncontrolled high-pressure washing.
- Inspect exterior joints, drainage and anchors periodically.
Available formats
Negin Sang Karimi can manufacture Gohare Sandblasted as slabs, tiles, paving pieces, free-length products, steps and risers, wall panels and custom cut-to-size components.
Related pages include Gohare Bush-Hammered, Gohare Honed, the sandblasted stone collection and the complete Gohare limestone range.
Production and export by Karimi Stone
Negin Sang Karimi (Karimi Stone) manages block selection, cutting, calibration, sandblasting, sorting, quality control and export preparation.
Before packing, pieces are checked for dimensions, final thickness, texture consistency, surface condition, edge quality and visible cracks. Export orders can be packed in reinforced wooden crates or pallets with suitable edge and surface protection.
For samples, technical documents or a quotation for Gohare Sandblasted, please contact Karimi Stone.
Frequently asked questions
Is Gohare Sandblasted completely non-slip?
No. Sandblasting can increase friction, but wet and public applications require testing on the finished surface.
What is the difference between sandblasted and bush-hammered?
Sandblasting normally creates a finer and shallower texture. Bush-hammering usually creates a deeper surface using repeated pointed impacts.
Can it be used in freezing climates?
Suitability must be confirmed using lot-specific test results, correct drainage and an installation system designed for the local climate.
Can the blasting intensity be customized?
Yes. Abrasive type, pressure and processing time can be adjusted within the dimensional and structural limits of the stone.
