GLASS BEADS FOR ROAD MARKING
Glass bead reflectivity is the most common way of reflecting light. Thousands of small glass beads embedded in traffic paint will cause it to light up when automobile lights hit it. Because of their shape and clarity, each glass bead reflects light back to the source.
BS 6088A road marking glass bead
Physics and chemistry function
Item | Standard |
Specific gravity(g/cm3) | 2.4--2.6 |
Refractive index | e1.5 |
Spherical beads (%) | >70 |
The Sieve Analysis
Diameter (¼m) | Standard Retain (%) |
>1180 | 0-3 |
1180--850 | 5--20 |
850--425 | 65--95 |
<;425 | 0--10 |
Note:
a) Glass beads coated or non-coated according to customers' requests;
b) Other standards beads such as EN1423/1424, AASHTO, KS L2521 etc can be produced too.
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