MarathonDrilling

Tunneling Project for a New Water Main

April 6th, 2011 by David

HWY 417 near Moodie Drive. Finishing up the tunneling project for a new water main. We are grouting the space between the steel casing and the new pipe using a special chemical foam we add to the grout. The chemical reaction aerates the grout and makes it lighter – It also cuts down the required volume by about a third. It also helps to keep the pipe from floating due to grout pressure. The people in the cars must be wondering what we are doing with a pile of equipment in a farmer’s field.