Corrosion and Inflow & Infiltration (I&I) was the culprit for concrete manholes requiring rehabilitation to stop the continual flow of additional water into the collection system. Additionally, a high build structural epoxy liner was required to mitigate the effects of Hydrogen Sulfide (H2S). Due to the severe condition of the manhole, including visible signs of deterioration and spalling concrete that compromised the structure, an emergency repair was deemed necessary to stop the leaking.
Using one of the wastewater industries top-quality products and equipment, applicators CC Steel presented a formidable solution. As members of Epoxytec Certified Applicator Network (ECAN), CC Steel has perfected the art of manhole restoration. The company’s experience allows them to act quickly and efficiently to provide services using proven products to bring manholes back to like-new conditions.
This particular rehabilitation began with surface preparation that included the removal of damaged concrete and abrasive blasting in accordance with SSPC-SP13/NACE No. 6 Surface Preparation of Concrete. Using a heated, plural component system, Epoxytec Series 456 CPP Sprayliner was spray applied in a single coat at a minimum of 125 mils Dft. The CPP Sprayliner product produces a thick, microfiber-reinforced polymer (FRP) film with high mechanical strength to protect against corrosion and seal Inflow & Infiltration (I&I). In addition, Series 465 has excellent H2S resistance, sealing, moisture tolerance, and service wear durability, making it a go-to product for manhole rehabilitation.
In total 397 vertical feet of 48” Manhole sanitary precast and brick was rehabilitated.