Global Chemicals Japan

Highly durable asphalt modifier made from waste PET NEWTLAC 5000

Achieving a balance between the effective use of waste PET and high durability pavement

Background & challenges


Aging social infrastructure and shortage of civil engineers

The aging of social infrastructure has become a serious problem, and it was reported that by 2033, approximately 60% of roads will be more than 50 years old. Furthermore, while periodic pavement inspections and the establishment of road maintenance methods is required in line with revisions to the Road Traffic Act, etc., the construction industry is faced with another serious problem stemming from a shortage of civil engineers who play a key role in the maintenance of our social infrastructure.

Aging social infrastructure and shortage of civil engineers

Trend towards the realization of a sustainable society for the future

In recent years, momentum was building behind movements to realize a sustainable society that looks ahead to the future, such as the conservation of marine resources by reducing plastic waste and the development of safe, secure, and resilient social infrastructure.

Trend towards the realization of a sustainable society for the future.

Effective use of recycled PET waste in high durability asphalt modifier
NEWTLAC 5000 series

Using waste PET (discarded Polyethylene Terephthalate), Kao developed NEWTLAC 5000 series, a high durability pavement modifier, and established a technology to promote positive recycling. NEWTLAC 5000 is a unique asphalt modifier developed by Kao that combines pavement durability enhancement with waste plastic recycling.

Reduction of PET waste, Reduction of microplastics, Reduction of asphalt

Approx. 40% of recovered PET can be effectively useed in NEWTLAC

Approximately 1,430 PET bottles (Approx. 50kg) can be reused to construct 100 m2 of paved rode surface.

Chopped waste PET, Chemical reaction converts it into an asphalt modifier, Mixed with paving material Normal construction method

Chopped waste PET, Chemical reaction converts it into an asphalt modifier, Mixed with paving material Normal construction method

SOLUTION

Easy to achieve extended service life

High durability achieved by adding approx. 1% to standard asphalt pavement


High durability achieved by adding approx. 0.2-0.3% weight of binder

Comparison of asphalt pavement durability (ruts)

Safer

Maintenance and improvement of pavement visibility and aesthetics


  • Reduced crumbling
  • Reduction in frequency of repaving
  • Road smoothness maintained for longer
  • Payment color (aesthetic) maintained for longer
  • Safer driving conditions due to increased visibility of white lines

standard pavement, Addiction of NEWTLAC 5000

Environmentally friendly

Reduced emission of asphalt-derived fines


Reduced emission of asphalt-derived fines

Wastewater after wheel tracking test

Wastewater after wheel tracking test

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