The city of Grand Junction used Castagra’s Ecodur 201on its precast manholes, including the steel ladders. |
One utility dealing with the problem of corrosion was the city of Grand Junction, Colo., with its sewage system experiencing varying levels of H2S exposure, particularly concrete pipes and manhole structures.
The utility selected a solution called Ecodur 201, provided by Castagra, which is designed to protect concrete structures from a variety of chemicals, including acids and salts. A fascinating fact about the coating: It is comprised of completely natural, non-toxic products. Referred to as “veggie plastic,” the product is made from vegetable oil and either newly mined gypsum or recycled drywall that would otherwise end up in landfills. It’s even edible - although, the company admits, it’s not very tasty.
Ecodur 201 can be sprayed onto surfaces, providing excellent adhesion to concrete and maintaining its elasticity. Grand Junction utilized it on its precast manholes, including the steel ladders. Full cure and final inspection were complete in under 24 hours.