The purpose of chemical grouting in sewer systems is to seal leaks and stop infiltration and exfiltration. Most leaks in structurally sound sewer systems are through pipe joints, manholes, service connections, and the first few feet of service laterals.
Chemical grout forms a waterproof collar around leaking pipes and manholes. Chemical grouts do not stop sewer leaks by simply filling joints and cracks. Instead, grouting chemicals are forced into the surrounding soil where they gel with the soil into a waterproof mass which cannot be extruded back into the sewer system.
This water-tight collar adheres to the outer surface of the pipe or manhole where it will stay indefinitely unless removed by excavation or exposed to sunlight for long periods of time. If groundwater pressures increase, the collar will be pressed even more tightly against the structure, increasing its ability to stop leaks. Call today for more information about pipeline grouting and our other services.