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Polymer Modified Cementitious Fill | Terefil

Supplier: Mainmark

Introducing Terefil™, the world’s most advanced structural light-weight polymer modified cementitious based filler for geotechnical applications.


Terefil™ polymer modified cementitious fill is used to solve a wide variety of challenges in the geotechnical, construction and mining industries, such as decommissioning underground fuel tanks. Terefil™ is an advanced engineered polymer cementitious filling material providing an excellent solution when granular fills or aggregate material options are too heavy, site access is limited, or project schedules are extremely tight. Terefil™ uses hydrocarbons, is highly flowable, easily placed, and does not require pre-loading or compaction for settlement mitigation. It will flow into spaces to fill voids and exhibits shrinkage of less than 0.1%.

Terefil™ contains a uniformly-distributed matrix of air bubbles generated by mixing cement slurry with stable, preformed hydrocarbon foam. Cementitious materials encapsulate the air bubbles, then dissipate leaving a void structure as a replacement to traditional aggregate. Polymer cementitious technology has made huge advancements have been made in stable-bubble technology and polymer modified cell structure stability. Compared to typical foam fills, the patented technology used in Terefil™ has increased stability, has a greater lift thickness and can be pumped greater distances. Extensive compressibility testing has validated the ability of Terefil™ to resist bubble collapse from pressure.

Terefil™ is environmentally inert and cost effective

Utilising the engineered foam cell structure to carry the fill materials, instead of water, provides a less expensive and environmentally inert alternative. Terefil™ polymer modified cementitious fill is produced onsite, therefore eliminating the need to pump in, transport, or treat large quantities of water.

Terefil™ is available as a pervious or impervious mix, to suit a range of applications, including:

  • Decommissioning underground fuel tanks, culverts, pipes and tunnels
  • Mass fill for large voids, underground tanks, sink holes and abandoned mines
  • Bridge approach
  • Landslip repair
  • Retaining wall and wing wall backfill
  • Services trench and manhole backfill
  • Permeable sub-grade beneath roads and sporting facilities