The Job
This RCP joint sealing project is located near Charlottesville, Virginia. The polyurethane grouting work was subcontracted to CJGeo as part of an on call contract for stormwater structure and dam maintenance with a municipality.
The Challenge
Pavement distress of an asphalt roadway over a small dam prompted an inspection of the triple barrel 48 inch RCP structure passing through the dam. Upon inspection, significantly less water was flowing through the pipes than was flowing through the downstream spillway.
On each of the three pipes, water was flowing out of the endwall around the RCP inverts. There was relatively little cover on the pipes. This would make open cut replacement relatively simple. However, the roadway is the primary access to a neighborhood. Thus, a trenchless grouting repair to address the joint failures and piping was optimal.
The Solution
CJGeo worked with the on-call contractor, and owner’s dam engineering consultant to design a grouting program that not only addressed the piping and joint leaks, but also the voids in the fill material between the pipes and roadway.
Over the course of two days onsite, a CJGeo polyurethane grouting crew grouted each of the three pipes using CJGrout 35NHV61 geotechnical polyurethane. 35NHV61 is provides adequate bearing capacity for typical roadway loading, performs identically in flowing water and dry environments, and is certified for potable water contact.
Speak With An Expert
Facing a similar challenge to this RCP joint sealing project? Give us a shout or shoot us a text. Click the state marker for the location of your project for contact info for the appropriate rep.
