Waterstop / Leak Sealing: Reinstatement of water tight integrity to prevent water egress from containment structures or water ingress into structures is a specialised task undertaken by ACRP and is accomplished through injection of hydroactive resins through specially developed equipment into cracks, fractures, joints and other structural defects.

Hydroactive resins expand upon contact with water and quickly cure to form a foam or gel seal that is tough, flexible, hydrophobic and essentially non-corrodible. It can be injected directly into leaking cracks or joints, depending on the water flow pressure, to rapidly reduce or stop further water penetration. Where water flow is severe or ongoing structural movement is anticipated, the resin formula can be adjusted to react more rapidly or remain more flexible than is standard.

Projects have primarily included tunnels and precast concrete elements, shafts, lift pits, basements, chemical storage bunds, bridge structures, manholes and underground pipelines.

Pile Injection

Reinstatement of water tight integrity to prevent water egress from containment structures or water ingress into structures such as jet piling and steel sheet piling is a specialised task undertaken by ACRP and is accomplished through injection of both Hydrophobic and hydrophilic resins through specially developed equipment into both of these piling techniques.

Jet Piles

Jet Piles are those generally in need of the injection process to help cope with the extra high water tables or lower down below the water table where the hydrostatic pressure becomes more of a problem, (Problem being that the excess water behind the piles saturates the substrate to a point where the piles begin to flow with excessive water beyond sweating. This generally occurs between the cold joint within the soft and hard piles and can be contained through the injection process.

Sheet Piling

Rarely needs this type of injection although we have been involved in such cases in the past.