AASHTO M247 – Glass beads used in traffic paint, Including Type 1/type 2/type 3/type 4/type 5

1) Product Function
  Improve the road marking line contrary reflection function. When driving at night, the lamp shines on the marking line with glass bead in it, the ray of lamp is reflected back parallely. So the driver can look at the road clearly and drive safely at night.

 

2) Product Specification:
    The main products:


Type 1 and type 2 size distribution according to American Standard AASHTO M247 .

                        Table 1 Glass bead Size Distribution (AASHTO M247 International Standard)

 

 

Type

Glass beads Size Distributionμm

Glass beads Cumulative Retained %

1

>850

0

850~600

5~25

600~300

40~80

300~150

10~35

<150

0~5

2

>600

0

600~425

0~10

425~300

15~50

300~180

45~75

<180

0~5

 

2.Products according to international standard include:BS6088、KS and AASHTO,EN1423 etc.

 

3.You can choose different size glass bead between 50μm-1180μm according to different funcition.

 

3) Technical references
Appearance: Colourless and transparent ball, no visible bubbles and impurity.
Spherical beads:≥80%(600< Sieve size< 850um,spherical beads≥75%)
Density:2.4-2.6g/cm3
Refractive index:Nd≥1.50 
Glass bead composition:The glass bead is made of sodium and calcium. SiO2>68%

4) Package:
1.Using double-deck package, the inner is polythene film and its thickness is not less than 0.5mm,the outer is plastic woven bag to prevent leak or damp. The net weight of each bag is 25±0.2kg.
2.Using double-deck package, the inner is polythene fim and its thickness is not less than 0.5mm, the outer is plastic woven bag to prevent leak or damp. The net weight of each is 1000±8kg.
3.According to clients' requirement. )

AASHTO M247 TYPE 3, 4 and 5


The Glass Beads are highly reflective 1.5 index glass beads that are 90%+ round. They are made using a unique and revolutionary manufacturing process along with the purest of raw materials.The size of a glass bead can affect retroreflectivity, especially under wet conditions. Larger beads have slightly higher retroreflectivity than standard beads under dry conditions.Retroreflective Index is more than >500 mcd.M-2.1x-1

Specification

Refractive Index

Roundness Rate

Size Range&Cumulative retained

AASHTO M247 TYPE 4

>1.5

>90%

>2.0

1.7-2.0

1.4-1.7

1.18-1.4

1.0-1.18

< 1.0

0%

0-5%

0-20%

40-85%

5-40%

0-5%

AASHTO M247 TYPE 5

>1.5

>90%

>2.35

2.0-2.35

1.7-2.0

1.4-1.7

1.18-1.4

< 1.18

0%

0-5%

0-10%

40-85%

5-40%

0-5%

AS/NZS 2009:2007 D

>1.5

>90%

>1.7

1.4-1.7

1.18-1.4

1.0-1.18

0.85-1.0

< 0.85

0%

0-5%

0-20%

40-85%

5-40%

0-5%