Void Filling

Geo Grout's pressure grouting procedures and site specific mixes have been utilized for void filling applications, including abandoned underground pipes, concrete slab construction joints, structural steel pipe columns, and heavy equipment base frames. Geo Grout can provide an effective solution for unique geotechnical problems.

Abandoned Underground Pipes

Pressure grouting here is carried out by initially installing grout plugs along with the required injection and vent ports at each end of the pipe. Pressure grouting is typically performed from the low end injection pipe.

This geotechnical solution ensures total displacement of fluids within the pipe enclosure through the high end pipe vent. For this application, Geo Grout produces a grout mix with specific properties. For example, the grout has flow properties that permit total displacement of fluid from the pipe enclosure. Also, the grout will maintain its material integrity during injection and not mix with fluid present in the pipe.

Concrete Slab Construction Joints

In concrete slab-on-grade construction, as the concrete cures, differential hydration between the upper and lower surface may occur. This will cause the concrete slab to curl upward, primarily along both sides of the construction joint, leaving a minor void fill space along the alignment of the construction joint. This problem becomes quite serious in laneways subject to heavy traffic. The continuous pounding effect at the joint interface tends to increase the void fill size, resulting in continual flexure of the slab and subsequent failure.

Geo Grout has resolved this problem by injecting a high flow fine particle structural grout beneath the construction joint interface. The grout fills all available voids and restores the bearing surface of the sub grade. This geotechnical solution eliminates any further flexing of the slab, by locking the joint interface, and substantially increases the life span of the concrete slab.

Structural & Cellular Grouts

In order to accommodate design specification requirements on building projects, Geo Grout has produced flowable structural grouts with compressive strengths up to 60 MPa. These grouts have been implemented on a variety of projects such as grouting of heavy equipment basesand steel pipe columns, to enhance their load bearing capacity.

Geo Grout has utilized cellular grouts in dry environment applications requiring R Value enhancement. This light weight product can be produced with up to 80% air content, giving it its insulating value provided it is placed in a water free environment. Typical applications where Geo Grout has used cellular grout include void fill of confined areas along foundation walls, trench fills over shallow frost susceptible utilities and as an infill in concrete block walls.

About Geo Grout

Geo Grout is an Alberta based company providing pressure grouting services for concrete restoration, void filling, soil stabilization and fluid cut offs. Geo Grout's custom designed pressure grouting units are supported on tandem axle trucks. Each individual unit features a high speed colloidal mixer for dispersion of fine particle grouts and a progressive cavity pump to eliminate mix segregation during the pumping process. All the materials incorporated into the grout are transported on the truck, minimizing set up costs. The field mixing also provides flexibility, allowing for immediate changes to the grout mix and/or grout viscosity as conditions dictate.

For more information on our unique Geotechnical Solutions, please contact our offices.

Void Fill | Sidewalk Repair | Geotechnical Solutions