Case Study: GeoKrete® 10 Year Success Test
Manholes rehabilitated with Quadex® GeoKrete® still looking good after 10 years.
Same Manholes originally lined with Polyurea coating failed after one year.
In 2006 an annual inspection of manholes on Butte Des Morts Beach Road in Neenah, WI, revealed a lining failure of more than a dozen manholes that had been rehabilitated with a polyurea coating just one year prior. Extensive flaking and peeling was already present indicating a complete failure was imminent.
Rather than re-coat the manholes with the same material, the Grand Chute- Menasha West Sewer Commission instead chose to reline them with a much more robust material, GeoKrete Geopolymer, manufactured by Quadex LLC., as recommended by a local manhole rehabilitation specialty company, Hydro-Klean (formerly Infratech).
Once the manholes were properly prepped, GeoKrete was applied using a spin-casting apparatus to ensure a consistent and even coating from top to bottom. Only one pass was required for coverage. Then the contractor used trowels to smooth out the finish. GeoKrete has an excellent cure rate, and the manholes do not have to be taken out of service.
Rodney Manthey, from the Grand Chute-Menasha West Sewer Commission recently inspected the same manholes and reported that after 10 years the manholes show no signs of failure and are still in excellent condition.