Ground Engineering - Soil Retention & Stabilization - ASTEC™ FRP Soil Nail

Soil Stabilization Fully cut-able FRP soil nail system used for the stabilization of slope.

Passive anchor solution for slope stabilization

A Passive Anchor is not pre-tensioned. Applied loads are transmitted from the ground or ground structure directly. A passive anchor does not usually have a free (unbonded) length of tendon.

A typical application for Passive Anchors is the stabilization of soil-covered slopes, which are constantly moving due to gravity. In that case Passive hors are inserted from the face of slope into the stable ground and grouted to provide preventive anchoring in case the soil starts moving.

About our ASTEC FRP anchors

• For temporary applications, take advantage of the cuttable nature of FRP bars. At the end of the project, the anchor doesn’t need to be removed from the ground, as it can be cut by standard earth moving equipment or Tunnel Boring Machines.
• For permanent applications, the full resistance of the FRP anchor to corrosion will guarantee optimal performance over the years. No additional corrosion protection accessories required.
• Splicing system: Dextra provides a unique splicing system allowing to splice FRP bars to achieve longer tendon length.
• 4 bar/anchor diameters available for an ultimate tensile load up to 770 kN.
• Designed as per ACI 440-4R-04; FHWA-IF-03-017; FHWA-SA-96-069; HK GEOGUIDE 7; ISO 6934-4.

Engineering support : Your project is unique. Dextra supports you on item selection and design of your anchors.
Light weight : Nullifies the requirement of a crane to transport or install the anchor.
Cuttable = no removal : No extraction required, even in neighbouring plots, as the anchor can cut. Save on anchor removal costs.

Excavation

Retaining walls for excavations are vertical structures that only allow limited deflection. Typically, pre-stressed active anchors are preferred. High strength tendons anchored to the retaining wall on one end and to the ground on the other end through a bulb of pressure injected grout named ‘bond length’.

Slope Stabilization

On soil-covered slopes, soil is constantly moving downslope due to gravity, therefore larger displacement have to be considered. Typically passive anchors are preferred. High strength tendons are fullygrouted from the face of the slope into the stable ground.

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