It is an additive to asphalts to make normal asphalts into functional asphalts such as "Drainage quiet asphalts", "Modified asphalt" , etc. by adding modifier to the normal asphalts to increase the strength and viscosity of the asphalts.

The main composition of RBBS modifier is a radial type SBS (styrene - butadiene - styrene) which has high viscosity due to its high molecular weight and has good compatibility with asphalts. And it is a modifier which can drastically improve the quality of the asphalts.

Molecular structure of radial type RSBS and linear type SBS.

Radial type and linear type structures

Compatibility between the asphalt and radial type structural RSBS

a) AP-5 Structure map

b) AP-5 mixture ratio and dark brown semi solid

c) Compatibility between AP-5 and radial structural RSBS
Viscosity and cohesiveness are increased by mixing RSBS and AP-5.

• Products stability.
  It is very stable thanks to thick film using high molecular weight RSBS.
• Drastic noise reduction.
  It has an excellent noise reduction capacity as it has high porosities due to its excellent stability.
• Excellent moldability.
  Excellent moldability and durability due to low molding viscosity and high viscosity at 60°C.
• Excellent technology.
  Developed after comparison of all domestic modifiers.
  (Self testing of modifiers and binders is possible.)

RSBS low noise and drainage (Well drained road)

Outline
The main object of RSBS low noise drainage pavement is to provide vehicle drivers with safety in the rain. The pavement has porosity ratio of about 20%. It prevents the formation of water films on the surface of the road as the rainwater easily drain through the porosities of the pavement.

<Cross section of low noise drainage asphalts>

• Reduction of noise by 4db ~ 5db by drying the road surface.
• Reduction of noise complaints from residents at house and apartment near the road.
• Very effective on lowering the noise ranging from 500Hz to 1000Hz which greatly grates upon the ears.

Excellent drainage capacity

• Thick film forms on the surface of aggregates by RSBS modifiers.
• Water film does not form on the road surface in the rain as water drains well through the surface of the road.