Product Description
Glass beads are tiny spheres of glass that are used in paint and durable road markings to reflect light back to the driver in dark or poor weather conditions – improving safety and visibility. The glass beads play a very important role in the road safety .During day time the white road marking material gives the sufficient visibility as a contrast to the asphalt. In the night time contrast of the white line is not sufficient and must be improved by adding light reflective glass beads.
Physical Properties
| Name | Index |
| Appearance | round, clean, transparent and free of bubbles and foreign matters |
| Specific gravity | 2.4-2.6g/cm3 |
| Roundness | ≤600μm roundness≥85%, ≥600μm roundness ≥80% |
| PH | 7.2 |
| Index of refraction | ≥1.5 |
| SiO2 | ≥65% |
| Micro hardness | 630kg/mm2 |
Typical Chemical Composition
| SiO2 | Na2O | MgO | CaO | Al2O3 | K2O | others |
| 71-73% | 13-15 % | 3-5% | 8-10% | 0.5-2% | 0.2-0.6% | ≤2% |
Dimension
1). Premixed Type
| Size scope (μm) | Alternative NO.(mesh) | content(%) |
| >600 | >30 | 0 |
| 600-300 | 30-50 | 50-90 |
| 300-150 | 50-100 | 5-50 |
| <150 | <100 | 0-5 |
2).Surface Scattered Type
| Size scope (μm) | Alternative NO.(mesh) | Content (%) |
| >850 | >20 | 0 |
| 850-600 | 20-30 | 5-25 |
| 600-300 | 30-50 | 30-80 |
| 300-106 | 50-140 | 10-40 |
| <106 | <140 | 0-5 |
Product standards
1).BS6088A/B International Standard
| Type | Glass bead size scope(μm) | Glass bead quality percentage(%) |
| BS6088A | >1180 | 0-3 |
| 1180-850 | 5-20 | |
| 850-425 | 65-95 | |
| <425 | 0-10 | |
| BS6088B | >850 | 0-5 |
| 850-600 | 5-20 | |
| 600-300 | 30-75 | |
| 300-180 | 10-30 | |
| <180 | 0-15 |
2).KSL2521 International Standard
| Type | glass bead size scope(μm) | Glass bead quality percentage(%) |
| 1 | >850 | 0 |
| 850-600 | 50-30 | |
| 600-300 | 30-80 | |
| 300-106 | 10-40 | |
| <106 | 0-5 | |
| 2 | >600 | 0 |
| 600-300 | 40-90 | |
| 300-150 | 5-60 | |
| <150 | 0-5 |
3).AASHTO M247 International Standard
| Type | glass bead size scope(μm) | Glass bead quality percentage(%) |
| 1 | >850 | 0 |
| 850-600 | 5-25 | |
| 600-300 | 40-80 | |
| 300-150 | 10-35 | |
| <150 | 0-5 | |
| 2 | >600 | 0 |
| 600-425 | 0-5 | |
| 425-300 | 20-50 | |
| 300-180 | 45-75 | |
| <180 | 0-5 |
4). EN1423, EN1424 International Standard
| Type | glass bead size scope(μm) | Glass bead quality percentage(%) |
| EN1424 | 1180 | 0 |
| 1000 | 0-10 | |
| 850 | 5-20 | |
| 600 | 45-85 | |
| 355 | 95-100 | |
| EN1423 | 850 | 0-2 |
| 710 | 0-10 | |
| 600 | 0-40 | |
| 355 | 50-90 | |
| 212 | 80-100 | |
| 125 | 95-100 |
Shippment
