Micro-Trench Fill / Products / Home
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- A complete Grout Pump Platform built as per custom specification
- Grout Mixing and Pumping Unit
- TRENCHFILL GROUT Mix
MICRO-TRENCH – narrow trench or slot cut in the road or footpath surface to accept the fiber duct.
REINSTATEMENT – Infilling and repairing the road or footpath surface to its original level and condition.
Therefore, the solution for micro-trench reinstatement is a material that can be prepared on-site for use, but has been factory batched beforehand to achieve quality consistency. A free-flowing material will allow full-depth penetration into the micro-trench without requiring additional compaction – this will ensure the trench is filled and will enable much faster reinstatement speeds than trying to pack and compact a stiffer material like asphalt.
TRENCHFILL GROUT from LBT POWER SA is a prebagged cement base mix that produces light, pumpable, aerated mortar with high stability and cohesion. This product was specifically designed for micro trench reinstatement and ground cuts after laying pipes. It works well for any soil or road foundation layer achieving the following essential requirements:
- Bonds to the foundation materials
- Free-flowing and self-compacting into the trench or cut (no additional compaction required)
- Seals against water ingress
- Penetrates and fills the whole trench depth with no risk of secondary compaction
- Provides a dimensionally stable running surface
- Provides appropriate skid resistance for the road condition
- Rapid 4 hours cure to enable same-day road re-opening
- Resistant to being ‘trafficked out of the micro-trench
- It prevents the bleeding of water that usually occurs when loose earth is used for a fill
- Safe to use (no hot materials)
- Simple to use for installer teams
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Because of its ability to entrain air in the form of spherical microbubbles, TRENCHFILL GROUT produces light mortar with controlled flow properties and high stability (absence of segregation).
TRENCHFILL GROUT enables the excavation site to be re-opened quickly to traffic. On average, only 4 hours after pouring, the mortar reaches a resistance to deformation equal to that of compacted soil, and after 24 hours reaches the performance level of a cemented mix. The final 28 days’ compressive strength of mortar is between 3 and 4 MPA, allowing easy removal if necessary.
TRENCHFILL GROUT is supplied in 25kg bags for ease of handling. It can be used with any high-speed mixer operating on speeds over 200rpm to ensure high air entraining action.
The density and fluidity of the wet mix can be controlled by the amount of water used. We recommend using 5 to 6 liters of water per 25 kg bag.
A layer of hot asphalt or a special bitumen sealant can be applied on top of TRENCHFILL GROUT to ensure perfect tightness, waterproofing, and seamless astatic aspect.
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