The prepared chemical grout
was poured into the pot and sufficiently mixed with the sand before standing for four hours.
The solution was use of a single-component, urethane chemical grout
called AV-310 Hydro Sealant from Avanti International.
is specifically designed to stop infiltration at pipe joints and laterals, and its use to seal laterals after lining is a cost-effective alternative.
This marked the birth of chemical grout
, which National Power Rodding soon had the opportunity to prove could greatly help solve water infiltration problems.
Since its development in the early 1950s, chemical grout
has been used to stop water movement through soils in mines, earthen dams, tunnels, and excavation sites.
The sealing of sewer lateral connections (aka "services") with chemical grout
continues to gain popularity across the country.
The American Society of Civil Engineers (ASCE) reports in its manual Existing Sewer Evaluation and Rehabilitation, "On average, over one-third of system infiltration enters through the laterals, most of which comes in at connections, or very near the main line." Now, there is good evidence that cities can actually save money by sealing those laterals with chemical grout
. Not many hard facts exist to help you make infiltration calculations, so the few available facts are important.
has been used successfully for more than 30 years to stop leaks in sewer systems.
was the first trenchless pipeline rehabilitation process and, when properly applied, it is still the best cure for infiltration of groundwater.