Specialist Grouting
In addition to grouting work undertaken as part of mine workings stabilisation and mine infilling work we provide a range of specialist grouting services.
- Compaction grouting – for example treatment of workings or solution features in chalk with sand/cement/pfa/bentonite grout mixes
- Consolidation grouting of loose fills or granular strata for ground improvement or underpinning existing structures using sand based grout mixes
- Encapsulation grouting of inaccessible hot spots of contamination such as gas holder bases using special cementitious and resin grouts
- Groundwater or gas barriers using resin grouts or special cementitious grouts
- Fissure grouting of fault zones and other anomalies
- Anchor grouting—cintec anchors, soil nails, rock bolts and ground anchors
- Annulus filling - bentonite/cement grouting of large diameter pipelines installed in tunnel or pipejack for the oil & gas industry
- Underwater grouting for bridge abutments and foundations using specialist anti wash-out and waterproof grouts
- Sewer, culvert and redundant utility pipeline grouting
- Bridge, underpass, subway and cellar filling using pfa and foamed grouts
- Packer installation and deep borehole grouting
- Tunnel grouting for example to fill behind linings in brick lined rail tunnels
- Slab jacking
We operate a wide range of grout mixing, pumping and ancillary plant for this type of work, much of which is bespoke plant designed and developed in-house;
- Grout mixing plant including paddle mixers, pug mill mixers, colloidal mixers, capacity 0.5—150m3 per hour
- Grout pumping equipment includes trailer mounted concrete pumps, gardner-denver piston type grout pumps, displacement air pumps and worm type screed pumps
- Mobile agitators and re-mixers up to 10m3 capacity
- Vertical and horizontal silos
- Pressure gauging and electro-magnetic flow monitoring equipment