Manholes

Injection grout being pumped through a concrete manhole structure into the soil to create a grout curtain to stop infiltration.

View Avanti chemical grout being injected to stop horizontal leaks within the manhole wall to stop infiltration.

View Avanti chemical grout being injected to stop vertical leaks within the manhole wall to stop infiltration.

Experience the action up close with our helmet cam capturing the injection of Avanti's AV-202 Multigrout into a joint in a precast manhole.

In Vancouver, WA, a manhole with a pick hole was letting in 10 gpm of water. By employing Avant's AV-202-LV Multigrout LV and Oakum, the leak was successfully sealed, saving the city more than $10,000 annually.

Helmet Cam of manhole curtain grouting with AV-275 Soilgrout.

Watch the Oakum Soakum method in action using Avanti's AV-202 Multigrout and Oakum to fix infiltration problems in an underground vault leaking from the Pacific Ocean. 

Explore the essentials of addressing water leaks - infiltration - in manholes with our educational whiteboard animation. This video discusses impacts of infiltration, safety protocols, infiltration sources, deterioration causes, and injection grouting solutions for effective manhole remediation. It highlights the importance of managing manhole infiltration and regular infrastructure maintenance.