| Quantity: | |
|---|---|
1-3mm
SEPPE BAUXITE
2606000
▸ High‑alumina calcined bauxite aggregate with 85% Al₂O₃, engineered for high‑friction anti‑skid surface coatings. Provides extreme durability, skid resistance and polished stone value for highways, bridge decks, industrial floors and pedestrian safety applications.
★ 85% Al₂O₃ High‑Friction Aggregate
★ Low Dust, Angular Grain
★ Excellent PSV & Skid Resistance
▸ SEPPE anti‑skid calcined bauxite is a premium aggregate produced from high‑grade bauxite, calcined in a vertical shaft kiln and precision‑screened into angular grains. With an alumina content of 85% and hardness close to 9 on the Mohs scale, it provides exceptional polished stone value (PSV), skid resistance, and long‑term durability. It is widely used in high‑friction surface treatments (HFST) on highways, bridge decks, roundabouts, airport runways and industrial flooring, where it is broadcast onto epoxy, polyurethane, or MMA resin systems to create a hard‑wearing, anti‑slip surface.
▸ The shaft kiln process produces a thoroughly sintered, low‑porosity grain that delivers superior wear resistance and consistent friction properties for anti‑skid applications:
Extremely Hard Grain — complete calcination and high alumina content result in Mohs hardness ~9, essential for withstanding the polishing action of vehicle tyres and foot traffic.
Consistent Particle Shape — angular grains with sharp edges lock into the resin binder and provide immediate and long‑lasting micro‑texture for skid resistance.
Low Dust & Clean Surface — processed through washing and air classification to remove ultrafines, ensuring excellent binder adhesion and a clean, high‑friction finish.
Reliable Supply — integrated mining and calcining operations ensure consistent chemistry and physical properties for large‑scale infrastructure projects.
▸ XRF Chemical Analysis — Al₂O₃, Fe₂O₃, TiO₂, SiO₂ confirmed per batch to guarantee 85% min alumina
▸ Sieve Analysis — tight control of particle size distribution (e.g., 1‑3 mm, 2‑4 mm, 3‑5 mm)
▸ Bulk Density & Apparent Porosity — tested to ensure dense, non‑absorptive grains
▸ Polished Stone Value (PSV) — periodic testing to verify high skid resistance performance
▸ Moisture Content — controlled to ≤0.3% for good resin bond and storage stability
On-site laboratory at SEPPE processing facility
▸ Outstanding Skid Resistance: Hard, angular grains deliver an exceptionally high polished stone value (PSV typically ≥65), ensuring long‑term skid resistance on high‑speed roads and pedestrian areas.
▸ Extreme Hardness & Wear Life: With Mohs hardness ~9 (second only to diamond and fused alumina), the aggregate resists polishing and abrasion, significantly extending the service life of anti‑skid surfaces.
▸ Consistent 85% Alumina Content: Guarantees uniform colour, chemical stability, and resistance to weathering and de‑icing salts, making it suitable for all‑season outdoor use.
▸ Excellent Resin Compatibility: Low moisture and clean grain surfaces ensure a strong bond with epoxy, polyurethane, MMA, and other binder systems without interference.
▸ Versatile Grading: Available in popular anti‑skid size fractions (0-1mm,1‑3 mm, 3‑5 mm), allowing contractors to choose the optimal texture depth for each application.
▸ HIGH‑FRICTION SURFACE TREATMENT (HFST)
The primary application — broadcast onto epoxy or MMA resin on highways, bridge decks, sharp curves, ramps, and roundabouts to dramatically increase skid resistance and reduce wet‑weather accidents. Typical size: 1‑3 mm or 3‑5 mm.
▸ INDUSTRIAL FLOORING & DECKS
Used in factories, warehouses, loading bays, helipads and offshore platforms to create slip‑resistant surfaces that withstand heavy traffic and chemical spills.
▸ PEDESTRIAN SAFETY SURFACES
Applied at crosswalks, railway platforms, stairways, pool surrounds and public walkways to prevent slips and falls. Provides excellent durability and an attractive natural grey‑brown appearance that can be tinted.
▸ AIRPORT RUNWAYS & TAXIWAYS
Meets strict friction specifications for runways, taxiways and apron areas, ensuring aircraft braking safety in wet conditions.
▸ CYCLE LANES & BUS LANES
Coloured anti‑skid systems using calcined bauxite provide both visual delineation and high friction for vulnerable road users.
| Chemical Composition (Typical) | |
| Al₂O₃ | ≥ 85% |
| Fe₂O₃ | ≤ 2.0% |
| TiO₂ | 2.5 - 4.0% |
| SiO₂ | 4 - 8% |
| CaO + MgO | ≤ 0.5% |
| K₂O + Na₂O | ≤ 0.3% |
| Physical Properties (Anti-skid Grain) | |
| Grain Shape | Angular, sharp edges |
| Standard Sizes | 0-1mm,1‑3 mm, mm, 3‑5 mm (custom cuts on request) |
| Bulk Density | ≥ 3.00 g/cm³ |
| Apparent Porosity | ≤ 5% |
| Water Absorption | ≤ 1.5% |
| Mohs Hardness | ~ 9 |
| Polished Stone Value (PSV) | ≥ 65 (typical) |
| Moisture Content | ≤ 0.3% |
| Appearance | Grey to dark brown angular grains |
| Product Grade | Al₂O₃ Min | Recommended Sizes | Primary Application |
| AS‑85/1‑3 | 85% | 1‑3 mm | High‑friction road surfaces (HFST), pedestrian crossings |
| AS‑85/2‑4 | 85% | 2‑4 mm | Bridge decks, cycle lanes, heavy‑traffic industrial floors |
| AS‑85/3‑5 | 85% | 3‑5 mm | Coarse anti‑skid for factory floors, ramps, helipads |
▸ SEPPE’s vertical integration from bauxite mining to shaft kiln calcination and precision screening ensures a reliable, high‑performance aggregate for critical anti‑skid applications. Our 85% alumina bauxite is produced under strict quality management, and every batch is tested for chemistry, hardness, density, and particle size. When you use SEPPE anti‑skid bauxite, you get the consistency needed for road safety projects, where surface friction performance must meet specified standards (e.g., ASTM E274, EN 13036).
▸ We supply contractors, road authorities, and resin system manufacturers in over 40 countries, offering flexible packaging (25 kg bags to bulk shipments) and technical support including PSV test reports, gradation certificates, and on‑site trial assistance.
▸ 25 kg multi‑wall paper bags, 50 kg bags, 1 MT / 1.5 MT jumbo bags
▸ 20' FCL: approx 25‑27 MT (palletized or bulk bags)
▸ Private labeling and custom packaging available
▸ Its exceptional hardness (Mohs ~9) and angular particle shape provide high polished stone value (PSV) and micro‑texture, which maintain skid resistance even under heavy polishing by vehicle tyres. The 85% alumina content ensures chemical stability and resistance to weathering and de‑icing chemicals.
▸ Most highway HFST projects use 1‑3 mm calcined bauxite. For larger texture depth or heavier traffic, 2‑4 mm may be specified. We supply both and can produce custom sizes upon request.
▸ No. We wash and classify the product to remove dust and ultrafines. The clean surface ensures an optimal mechanical and chemical bond with epoxy, MMA, or polyurethane binders.
▸ Yes. We can supply independent test reports for PSV, bulk density, moisture content, and particle size distribution. Contact us with your project specification and we will provide the relevant documentation.
▸ Our 85% alumina bauxite has a natural grey to dark brown colour, which is relatively uniform from batch to batch. It can also be used in tinted resin systems to create coloured anti‑skid surfaces.
▸ Absolutely. We offer free samples of our standard sizes (1‑3 mm, 2‑4 mm, 3‑5 mm) for testing with your resin system. Technical advice on spread rates and binder compatibility is also available.
▸ Contact SEPPE for: • Free anti‑skid samples • PSV / Sieve analysis reports • OEM packaging • Competitive bulk & container pricing
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