RENIE APAYOR

SENIOR GROUTING SPECIALIST

Renie is a chemical grouting expert who has successfully completed hundreds of injection, soil stabilization and water-stop projects over his Multiurethanes career.

Renie Apayor – Senior Grouting Specialist

Work History

2003 to date	Multiurethanes Ltd. - Mississauga, ON Multiurethanes Inc. - Buffalo, NY

WHMIS
Working at Heights
Ontario Ministry of Labour Worker Health and Safety Awareness
Ontario Ministry of Labour Supervisor Health and Safety Awareness
Confined Space Awareness
First aid Training
Elevated Work Platform

Specialty Skills

Chemical Grouting – Concrete crack injection, confined space injection work, hydro-power water-stop and contact grouting, specialty resins (polyurethane, epoxy, acrylamide, acrylic), water stop, void fill.
Cement Grouting – Rock grouting (Microfine/HE Cement), Non-Shrink grout placement, concrete restoration, water testing.
Mining – Surface and underground grouting works, shaft grouting

Surface Mine Sites
Tunneling Projects
Hydro Electric Dams
Shored Excavations
Heavy Civil Construction – Bridges, Grade Separations, Culverts
Residential Construction – Parking garages, foundations, elevator shafts
Municipal Infrastructure – Manholes, valve chambers, shafts, pipes
Underground Concrete Structures – Pools, Reservoirs, Cisterns
Industrial Facilities – Refineries, Power Plants, Factories

Renie Apayor’s Projects

Cellular Grouting to Backfill Underground Casings

Greater Toronto Area, ON

A utility contractor required a grouting solution to backfill underground casings and control ground water migration into an excavation site.
Chemical Grouting for Masonry Restoration

Guelph, ON

Voids within a century old church tower required a low-density fill to prevent water infiltration from migrating within the masonry structure. Multiurethanes technical team safely filled the existing voids using durable chemical grout materials.
Chemical Grouting to Stop Water Seepage into Utility Chamber

Guelph, ON

Engaged in water stop project to seal joints in precast underground utility chamber where infiltration was inevitable due to a high-water table.
Chemical Injection in Mechanical Room

Guelph, ON

A building restoration contractor experienced water leakage into the mechanical room. Polyurethane resin was injected to fill the holes, forming a semi-rigid foam barrier and preventing further water leakage.
Crack Injection around Industrial Pipe Penetrations

Kapuskasing, ON

Performed precision drilling for crack injection work to seal leaking joints and cracks, using polyurethanes resin at a hydroelectric generation station.
Epoxy Injection in Canal Wall

Guelph, ON

A restoration contractor refurbishing the canal and lock gates found a joint that required to be sealed from infiltration of water. The joint was filled with epoxy, forming a rigid barrier, preventing the infiltration of water into the canal wall.
Fill stabilization around a manhole

Toronto, ON

Loose fill surrounding a manhole structure required stabilization using crack injection to stabilize the fill prior to cutting through the structure wall.
Grouting Program for Soil Stabilization

Toronto, ON

Applied a chemical grouting solution involving sodium silicate, delivered through sleeve pipes, after surface voids formed during a directional drilling project beneath an airport construction job site.
Leak sealing in Concrete Tunnel Liner

Toronto, ON

Engaged on a time-critical water stop project to seal active infiltrations through a concrete tunnel liner using chemical grouts.
Pressure Grouting for Railway Repair

Toronto, ON

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.
Soil Stabilization for High-rise Development Construction

Guelph, ON

A building restoration contractor experienced water leakage into the mechanical room. Polyurethane resin was injected to fill the holes, forming a semi-rigid foam barrier and preventing further water leakage.
Soil Stabilization in Tunnel Construction Project

Brampton, ON

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.
Soil Stabilization Program for Utility Contractor

Toronto, ON

Assisted a utility contractor in the implementation of a soil stabilization program when loose fill was encounter during excavation operations.
Soil Stabilization Program using Sodium Silicate

Toronto, ON

Provided technical services to implement a soil stabilization program when loose sands were encountered during a directional drilling project beneath an active airport apron.