City of Richmond Culvert Stabilization

Void fill, Soil Stabilization, Inflow and Infiltration Mitigation of over 1 mile of Culvert in Richmond, BC

About This Project

Contractor

SlabJack Geotechnical

Location

Richmond, BC

Product Used

Terrathane™ 24-042

Learn More About Terrathane™ 24-042

Explore Product

Problem

The City of Richmond in British Columbia was preparing for a major roadway expansion when they ran into a problem requiring culvert stabilization. The culvert joints experienced severe soil loss due to inflow and infiltration (I&I). In order to complete their roadway expansion, they had to address their compromised culverts and re-establish the support soil bearing capacity.

The 10ft x 5ft box culvert measured approximately 1700 meters long, or 5600 feet, and were 3-8ft below grade on average. The infiltration had been happening for some time, having an average of 1 – 1 1/2ft of silt that settled on the culvert floor. The culvert access points comprised of manholes that were located every 300 feet. The culverts had to be dammed off to minimize standing water, and the silt removed prior to injections.

Solution

The solution was to use the TerraThane 24-042 geotechnical polyurethane to stabilize the soils, fill the voids, and seal the joints against future I&I.

SlabJack Geotechnical approached the project by drilling 2 rows of holes, separated by 4 ft, with injection intervals at every 5 ft. The injections were made with 3 man teams, 1 crew member managing the truck, and 2 crew members injecting simultaneously from within the culvert. The simultaneous injection approach helped to maximize the spread of the polyurethane and to ensure the voids were filled, joints were sealed, and soil contact was re-established with the culvert.

Results

On a daily basis, SlabJack Geotechnical would stabilize 150 ft of the culvert. They worked from the same manhole for two days, injecting 150 ft to one side on one day and 150ft to the other on the next day, and then switch to the next manhole. They would inject approximately 400-500 lbs of polyurethane per injection location, with up to 15,000 lbs injected in a single day. The project took place over 9 weeks with the entirety of the culvert being stabilized against future erosion and settlement.

Project Gallery

Get Started with NCFI

Address

P.O. Box 1528 1469 Boggs Drive Mount Airy, NC 27030

Phone

(800) 346 8229

Fax

(336) 673 3131

See More Case Studies

Northwestern University Retaining Wall Sealing

Other

Dual-Component Systems

Geotechnical

Northwestern University Retaining Wall Sealing

Discover how Lincoln Company LLC was called in to seal a retaining wall with NCFI Geotechnical Polyurethanes.

Other

Lightweight Fill Systems

Geotechnical

Little League Light Foam Pole Setting

Setting and Stabilizing 75′ lighting poles for a little league baseball park using Strata-Fill 24-018 polyurethane.

Ram Jack Arizona uses NCFI TerraThane 24-003 to Stabilize 47 Rocking Slabs

Concrete Leveling

Dual-Component Systems

Geotechnical

Ram Jack Arizona uses NCFI TerraThane 24-003 to Stabilize 47 Rocking Slabs

Ram Jack Arizona used NCFI TerraThane 24-003 to stabilize the joints of 47 slabs, completing the initial phase of the project in approximately 12 hours.

We Have Partnership Down to a Science

We understand the challenges you face, and we’re here to help. Reach out today, and let's work together to find the best solution tailored to your needs with the highest-quality polyurethane foam products available.

Let's Talk Polyurethane