HR (High Retroreflectivity) Glass Beads
Diret-Melt Virgin Glass Made
|
Item |
Standard |
|
Appearance |
Outer clean and transparent, without visible bubble and impurity. |
|
Density |
2.4-2.6 g/cm3 |
|
Bulk Density |
1.57g/cm3 |
|
Roundness |
>90% |
|
Refractive Index |
1.5 Min. |
|
Composition |
SiO2 content: 71-74% |
|
Soften Degree |
720-730 centigrade |
|
Retroreflectivity |
>700mcd/lux/m2 |
|
AASHTO M247-13 Type 3 |
|
|
>1700 |
0 |
|
1400-1700 |
0-5 |
|
1180-1400 |
0-10 |
|
1000-1180 |
40-85 |
|
850-1000 |
5-40 |
|
<850 |
0-5 |
|
AASHTO M247-13 Type 4 |
|
|
>2000 |
0 |
|
1700-2000 |
0-5 |
|
1400-1700 |
0-20 |
|
1180-1400 |
40-85 |
|
1000-1180 |
5-40 |
|
<1000 |
0-5 |
|
AASHTO M247-13 Type 5 |
|
|
>2350 |
0 |
|
2000-2350 |
0-5 |
|
1700-2000 |
0-10 |
|
1400-1700 |
40-85 |
|
1180-1400 |
5-40 |
|
<1180 |
0-5 |
|
TT-B-1325D Type IV |
||
|
Micron |
Type 4 A |
Type 4 B |
|
1700 |
100 |
100 |
|
1400 |
95-100 |
|
|
1180 |
80-95 |
95-100 |
|
1000 |
10-40 |
|
|
850 |
0-5 |
35-70 |
|
600 |
|
0-5 |
AS /NZS 2009: 2006 Glass Beads: Type BHR, Type CHR, Type DHR
