Case Studies GeoSpray Geopolymer used to rehabilitate 50-year-old sewer by Abby Davey September 14, 2021 September 14, 2021 Project Overview: A 10-mile portion of a sanitary sewer interceptor was inspected for the first time in 2010 since its construction in 1970. The interceptor ranges from 60-90 inches in … 1 FacebookTwitterPinterestEmail