OLEXOBIT® S25E is a polymer modified binder (PMB) that is designed for use in strain alleviating membrane interlayer (SAMI) applications prior to the placement of asphalt.

PDF-Download-or-print.pngKey Benefits

Performance Benefits

  • Purposely designed for use in strain alleviating membrane interlayers (SAMI) to protect asphalt overlays.
  • Excellent resistance to reflective cracking, including active cracks
  • Suitable for SAMI applications over extensively cracked pavements and over pavement layers that may crack in future, such as cement treated materials.
  • Excellent waterproofing seal under asphalt

Application Benefits

  • Improved storage and travel stability over conventional SBS-modified binders
  • Compatible with conventional spray equipment and cutters


OLEXOBIT® S25E is manufactured to comply with Austroads AG:PT/T190 and ATS-3110 S25E grade.

Typical Characteristics

Property Typical Value
Softening Point, °C 90
Torsion Recovery at 25°C, % 68
Viscosity at 165°C, Pa.s 0.65
Consistency 6% at 60°C, Pa.s 1,200
Stiffness at 15°C, kPa 65
Segregation, % 0.5

Storage & Handling

The storage of bituminous binders for prolonged periods at elevated temperatures should be avoided as quality may be adversely affected. As a general rule, bituminous binders should be stored at the lowest temperature that enables practical use. 

Maximum Storage Temperature Recommendations

  • Storage for up to 90 days - 110°C
  • Storage for up to 7 days - 140°C
  • Storage for up to 4 days - 160°C
  • Storage for up to 24 hours - 180°C
  • Maximum storage temperature - 190°C

Application Temperature Recommendations

  • Maximum pumping temperature - 150°C
  • Temperature for Spraying - 180°C - 190°C

Health & Safety

To ensure hot bitumen is used in a safe and efficient manner the following safety precautions must be followed:

  • Wear suitable personal protective equipment (PPE) at all times. Full skin protection is required to avoid accidental burns when transferring or handling hot bitumen.
  • Always prevent contact between water and hot bitumen by checking the contents of the previous load before loading bituminous products into tankers and by following procedures to avoid violent boil-over of tanks.
  • Avoid exposure to fumes by standing back on the gantry or upwind until the vapours have dispersed.
  • Minimise bitumen fume by heating bitumen and asphalt products to the recommended temperatures.
  • Minimise the use of diesel when cleaning equipment as this contributes to the bitumen fume.

Safe Handing of SBS-modified PMBsPolymer modified binders incorporating SBS polymer require close attention to their handling and application to avoid degradation of the binder and exposure to irritant fumes. When handling SBS based binders it is important to remember the following points:

  • Know the product being handled
  • Know the recommended storage and handling temperatures
  • SBS-based PMBs have their own unique odour, however, they are safe to use when stored and handled according to recommendations

For a full description of hazards associated with the use of bituminous binders, please refer to the appropriate material safety data sheet (MSDS) available on the Puma Bitumen website.

Quality Assurance

Puma Bitumen is recognised nationally for its proven track record in delivering products of consistently high quality.

Every day our products perform under the most diverse and demanding road conditions in Australia.

This is attributable to a combination of our unique product technology, comprehensive quality assurance programs, operational efficiency and sophisticated production processes – all supported by our highly skilled and experienced staff.

We maintain an in-house national technical centre in Melbourne which focuses on R&D, as well as providing technical expertise and support to our customers throughout Australia.

Our team of technical specialists is dedicated to ensuring our products are thoroughly tested at every stage – from the selection of crude oil at the start of the production process, right through to delivery.

Our product stewardship and rigorous quality management practices reflect our commitment to delivering the highest quality products that perform on the road.

Our commitment to quality is recognised by our accreditation to Australian Standard AS/NZS 9001.