- Sewer/Storm Systems
- Industrial Services
Sewer manholes degrade over time from exposure to aggressive environments. RNR Enterprises can apply microsilica cement mortar to rehabilitate these manholes that have degraded. This process can even add structural strength depending on the thickness of the coating. In cases where manholes have exposure to corroding gases, an additional 100% solid epoxy coating can be sprayed over the mortar.
This process improves the chemical and temperature resistance of the surface, thereby prolonging the life of the manhole. All leaks and infiltrations are eliminated and the process leaves the interior surface smooth and continuous throughout. The single application system is applied at thicknesses from ½” up to 5” and restores deteriorated, rough surfaces. Water intrusion is prevented by application, and it leaves a smooth, flat and dense surface.
RNR Enterprises' Manhole Rehabilitation repairs cracks in manhole walls, bases, and corbels. After application, the composite system holds superior strength and has a high resistance to impact and abrasion.
In severe cases, RNR Enterprises has successfully applied the cement mortar to eliminate groundwater infiltration. This reduces the incremental water flows to treatment facilities. In manholes recently coated with this mortar, infiltrating groundwater of approximately 30 gallons per minute per manhole was eliminated.
This mortar application can also be used to repair most concrete surfaces, including sumps, tunnels, pits or any concrete structure that has experienced deterioration from exposure to aggressive environments.
For more information on manhole rehabilitation from RNR Enterprises, please contact us today!