The Steve Vick International Contract Service team is proficient at filling unwanted underground voids safely and permanently. Different methods are available including cementitious grout and polyurethane resin foam.
Grout offers a low cost solution where there is a need to seal off large diameter utility mains, either inserted or abandoned.
Grout will prevent the possibility of landfill sinking below ground level if the pipe were to break and is ideal when there is a need to uphold heavy and continuous loads above ground; for example busy highways, railways and canals.
Steve Vick International ENDSEALS™ are used within the pipe or void to create a dam for the grout to be injected into. Specialised mixing rigs are then used to prepare and syphon the grout through the injection point.
Steve Vick International patented foam can provide a low cost method of filling a wide variety of unwanted voids.
In most situations the Steve Vick International well proven FOAMBAG™ technique is used to provide plugs at strategic positions to prevent any unwanted flow of foam. Foam is then injected into the void, and once cured, prevents the ingress of potentially dangerous water or gas.
Typical uses of foam include:
- Abandoned pipework
- The annulus between an old main or sewer and a new inserted pipe
- The annulus in sleeved pipework at road, river or railway crossings
- The annular space following cable insertion in ducts following directional drilling project
ENDSEALS™ are used to stop gas tracking back along the annular space of inserted gas mains. This method avoids spending unnecessary time and money excavating.
ENDSEALS™ are also used to avoid reinstatement ‘slump’. By sealing off the annular space, the risk of backfill gradually finding its way into the gap and causing slumping at the surface is removed.
The use of ENDSEALS™ appears in UK gas industry ‘Main Laying Procedures’ and is widely considered to be best practice.
FOAMCAP™ is a lightweight and low cost alternative to metal caps; used by the Steve Vick International Contract Services to seal off abandoned dead gas mains. They are simple to fit and may be used on uneven or badly corroded mains.
Once cured a permanent seal against the ingress of gas, water and vermin is provided.