cement grouting to stabilize retaining toll

Emergency Cement Grouting Operation to Stabilize a Retaining Wall

Location: Toronto, ON
Sector: Infrastructure
Category: Cement Grouting

Description

The City of Toronto required Multiurethanes‘ technical expertise for an emergency cement grouting project to stabilize an undermined retaining wall over a 50 m length.

One of the biggest challenges was accessing the work area through heavy bush over a small muddy path. Once there, our grouting technicians drilled steel grout pipes into the bottom of the retaining wall. The grouting equipment was transported to the site by using a loader and consisted of a portable grout mixing and pumping unit with ancillary water supply.

This emergency project was completed within four days and required 500 bags of high-performance non-shrink grout. A solid foundation was created to permanently stabilize the retaining wall and adjacent embankment.

 

Soil Stabilization for Utility Contractor

Soil Stabilization Program for Utility Contractor

Location: Toronto, ON
Sector: Utilities
Category: Cement Grouting

Description

An underground utility contractor encountered loose fill after initial exposure of an open trench excavation. A Hydrovac was used to vacuum excavate the trench daylighting locates when fill began to collapse into the trench from beneath the sidewalk and road.

From the perimeter of the trench, parallel holes were drilled at 3-foot intervals, at alternating depths of 10 feet and 5 feet. 1/2 inch brake lines were driven into the subgrade using a hammer drill, to the correct depth. 60 litres of cement grout were injected into the drilled holes through the brake lines, permeating into the loose fill, binding with the fill to form a cement stabilized base.

Cement grout injection using Multiurethanes Microfine Cement and Superplasticizer, 1/2 inch Brake Lines, four chemical pumps, and a CG Mixer 22E were used to stabilize the backfill along the perimeter of the open trench. The stabilization program eliminated the potential for collapse of the open trench, allowing for the utility contractor to continue the excavation operation without incident.

Soil stabilization in high-rise development construction

Soil Stabilization for High-rise Development Construction

Location: Toronto, ON
Sector: Residencial
Category: Soil Stabilization

Description

While working on site at a Toronto Lakeshore high-rise development adjacent to Lake Ontario, Multiurethanes encountered a challenging situation performing water abatement and soil stabilization for the required high-rise foundation construction. With frigid January temperatures, the soil on one side of the wall became too unstable to work around. The site superintendents decided to halt all construction work while Multiurethanes stabilized the soil and stopped the flow of water.

Our grouting specialists faced with the challenge of securing the worksite to achieve these goals. Our team developed an innovative and unique solution; consisting of attaching a metal plate between perpendicular supports to strengthen the cracked wall, drilling grout equipment access holes in the metal plate, and performing cement grouting injections.

This solution proved to be very successful and our client was extremely impressed with our team’s innovation and quick thinking to de-escalate an unsafe work environment, as well as the completion of our assigned tasks. They have since asked us to perform this same solution technique to other challenging projects.

 

Soil stabilization for tunnel construction project

Soil Stabilization in Tunnel Construction Project

Location: Toronto, ON
Sector: Tunnels
Category: Soil Stabilization, Water Cut-off

Description

Multiurethanes provided soil stabilization for a complex tunnel project with several site restrictions including no drilling from surface and working in close proximity to sewer and water mains. Our solution involved sodium silicate grouting delivered through horizontal injection pipes arrayed out from inside a shaft. Injection of Universal Resin was also performed in localized areas. We specialize in projects with technical, complex grouting requirements.

cement grouting for LRT tunnel construction

Cement Grouting in LRT Construction Project

Location: Toronto, ON
Sector: Infrastructure
Category: Cement Grouting, Soil Stabilization

Description

Performed microfine cement grouting and water-stop operations using polyurethane resins, and provided soil stabilization in cross passage tunnels along the road in a light rail transit (LRT) line construction project.

Void Filling in Tunnel Liner at Eglinton Crosstown Project

Cement Grouting to Fill Voids Behind a Tunnel Liner

Location: Toronto, ON
Sector: Tunnels
Category: Cement Grouting, Soil Stabilization

Description

We provided soil stabilization services at the Eglinton Crosstown Project in Midtown Toronto.

The scope of work involved injecting cement grout around the tunnel liner to fill voids. Our solution involved a microfine cement grout mixture delivered through vertical injection pipes installed around the tunnel.

Microfine cement is able to penetrate very small openings such as soil pores and microscopic rock fissures, in order to improve strength and reduce permeability.

Pressure grouting for railway repairs

Pressure Grouting for Railway Repair

Location: Toronto, ON
Sector: Infrastructure
Category: Chemical Grouting, Soil Stabilization

Description

Our technical team developed a solution to lift train track crossings on wood ties by pressure grouting under the tracks. This new approach was fast, reliable and surprised the utility contractor, who had been looking for this solution for a long time. Multiurethanes technicians bring practical product knowledge and hands-on experience for applying proven grouting techniques to new applications.

fill stabilization around underground chamber

Fill stabilization around a manhole

Location: Toronto, ON
Sector: Utilities
Category: Chemical Grouting, Crack Injection

Description

Loose fill surrounding a manhole structure required stabilization. Multiurethanes technicians injected Universal Resin through vertical injection pipes to stabilize the fill prior to cutting through the structure wall.