Case Study
Download case study

How a Two-Component Slurry Controlled Jacking Forces in Challenging Tunnelling Conditions

Are you tackling tunnelling projects where wet sand, gravel, and reactive clays push jacking forces to the limit? That’s exactly what Technicore Underground faced while installing 1,500 meters of 1,500 MM internal diameter sewer CPP along Highway 50 in Bolton, Ontario. These conditions risked damaging the pipe and delaying the project.

Then Di-Corp implemented a two-component slurry system using Wyo-Ben Micro-Gel™ bentonite and Earth Pro ProPAC D™ polymer, which maintained consistent lubrication, provided excellent face support, and kept jacking pressures under control, eliminating the need for an Intermediate Jacking Station (IJS).

If you’re facing similar tunnelling challenges, downloading this case study will show you:

  • How Micro-Gel and ProPAC D performed across varying ground conditions, from wet sand to reactive clay.
  • Why improved lubricity and filtration control reduced equipment needs and kept costs under budget.
  • How Technicore completed all phases without delays or complications.

Di-Corp designed a jacking slurry to lubricate the concrete pipe as it is installed through sand, gravel, and reactive (sticky) clays.