Asphalt pavement for Bus lanes and bus stops
Busphalt

 Asphalt pavement method exclusively for bus lanes that improves pavement performance by resisting high shear forces of bus lanes and bus stops

About Busphalt

  • In the case of bus lanes and bus stops, plastic deformation and portholes occur a lot due to the stopping and acceleration/deceleration of buses.


  • Asphalt pavement method exclusively for bus lanes that improves pavement performance by resisting high shear forces of bus lanes and bus stops


  • Remarkably improved resistance to plastic deformation and cracking by applying high-strength epoxy resin and thermoplastic elastomer modifiers

Application

  • Bus lane olny
  • Bus stop / BRT lane

Materials

Epoxy

Elastomer asphalt modifier (RMC)

Fiber

- Epoxy for asphalt

- Main resin and hardener

- Ultra strength

- High water resistance


- Performance grade : PG 82-34

- High and low temperature

   properties improvement


- Tensile and shear resistance

improvement

- Crack resistance improvement


Quality criteria

Items
Unit
Quality criteria

Middle layer (Modified asphalt)

Surface layer (Busphalt)

Marshall stability
N
over 10,000
over 12,000
Void
%
3 ~ 6
2 ~ 4
Flow
1/10mm
20 ~ 40
20 ~ 40
Dynamic stability
times/mm
over 3,000
over 10,000
Tensile strength ratio
-
over 0.80
over 0.85

Mechanical properties

Hamburg wheel tracking test

  • Hamburg test to evaluate the buspalt performance
  • A total of 20,000 repeated wheel loads with a load of 705±4.5N under water immersion at 50℃

Examination result

  • As a result of repeated loads of 20,000 times, the final average deformation amount is 2.05mm, which is very good in plastic deformation resistance.
  • Busphalt is more than twice that of modified asphalt. (Modified asphalt deformation amount: 5-10mm/20,000 times)

Wheel tracking By number of times Plastic deformation amount

Construction Procedures