Definition - What does Grouting mean?
Grouting is the process used to seal a crack or leaking joint in underground piping. The purpose of grouting is to prevent the flow of groundwater into the pipe or to keep the material in the pipe from flowing into the groundwater. This technology enables pipe repairs in situ without digging up the pipe for welding or replacement.
Trenchlesspedia explains Grouting
Grouting can be accomplished by inserting an inner sleeve into the existing pipe and then filling the space between the original pipe and the new sleeve with chemical compounds in order to seal leaks. The process can also be used to stabilize ground conditions around new pipe installations during microtunnelling. Grouting was one of the first trenchless technologies to be introduced and has supported underground pipe maintenance for over fifty years. ASTM standards have been developed over the years to facilitate high quality and effective sealing through grouting.