The Mainstay Composite Liner is often used in a variety of applications:

  • Brick and concrete manholes

  • Lift stations and wet wells

  • Wastewater treatment plant headworks

  • Clarifiers

  • Digesters

  • Sumps

  • Sewer pipe

  • Trenches

  • Paper mills

  • Chemical processing plants

The following are photos of an application of the Mainstay Composite Liner at the San José Wastewater Treatment Plant in San José, CA:

Corroded concrete clarifier after surface preparationDeteriorated concrete clarifier after preparation to remove a failed existing thin film coating.

Smoothing ML-72 Restoration Mortar on a corroded concrete clarifier The same surfaces after restoration with Mainstay ML-72 Sprayable Microsilica Restoration Mortar. This high strength, low shrinkage mortar can be applied at thicknesses up to 5" in a single or multiple passes, returning the structure to its original strength, shape, and appearance.

Spraying DS-5 100% Solids Epoxy Coating onto the uncured mortar Immediately after the ML-72 Mortar has been finished, .125" (125 mils) of Mainstay DS-5 100% Solids Epoxy Coating is applied. This high strength, 100% solids (no solvent) corrosion barrier protects the structure and prevents further corrosive deterioration.

Restored concrete clarifier after application of the Mainstay Composite Liner This structure was rehabilitated in 2004. It is still in service today.