HFST Bauxite
Calcined bauxite has traditionally been the most commonly used aggregate material used for High Friction Surfacing.The inherent nature of Calcined Bauxite resists shear stresses that lead to polishing of the road surface. Its hardness is also beneficial in internal and external industrial flooring applications where a very hard and long lasting mineral is required to give high-friction, anti-slip performance.Calcined Bauxite has been found to exhibit characteristics far superior to alternative road surface aggregates.
Application
The majority of public sector systems will specify that Calcined Bauxite be used in their road and pedestrian crossing installations including the danger zone on the highway, the urban traffic roundabouts, the traffic sign, the traffic jam road, the pedestrian crosswalk, the deceleration area, the bikeway, the bridge, the platform, the truck park, the handicapped spaces and other parking lots, the stadium, the factory and industrial zone, the airport, the railway, the bus station, the leisure district, the beautify area and etc.
Specification for SNH87 Calcined bauxite
| Item | SNH82 | SNH85 | SNH87 |
| Al2O3 | min 82% | min 85% | min 87% |
| Fe2O3 | max 2.3% | max 1.9% | max 1.85% |
| SiO2 | max 12.5% | max 8.6% | max 7.0% |
| TiO2 | max 4.0% | max 4.0% | max 4.0% |
| PSV | min 70 | min 70 | min 70 |
| Colour | Buff/Grey | Dark grey | Dark grey |
| Particle shape | Angular | Angular | Angula |
| Bulk density | 2.8g/cm3 | 3.1g/cm3 | 3.2g/cm3 |
| Moisture content | 0.5% | 0.3% | 0.3% |
Available grain size
1-3mm, 3-5mm or as customer's requirement.
Package
Usually 1MTJumbo bag
Standard exporting package for sea transportation or air delivery
Special packing requirement is acceptable
