How Geopolymers in Trenchless Applications Are Changing the Industry: Learn More about Why, What, When, Where, and Who Benefits

As more so-called geopolymers are being introduced to the market place, we believe it’s time to have an intelligent and informative discussion regarding geopolymer application best practices: Why: Over the last decade, geopolymers have become a cost-effective and environmentally responsible structural rehabilitation solution, as well as being a viable addition to established materials and processes. What: When discussing geopolymers, the first step is to recognize there is no nationally accepted definition. The definition provided in this presentation is based on generally accepted terminology. The testing to differentiate a geopolymer from cementitious and other similar materials must include analytical procedures other than standard ASTM physical properties. For a geopolymer to be properly defined, both the oxide content (the individual components) and the phase content (the final product formed) need to be determined. When: Geopolymers are often used when pipes are highly deteriorated, exhibit high ovality, are non-round by design, or where there are changes in size, shape, or material in a single pipe length. Geopolymers are especially well-suited for highly corrosive environments and work extremely well in storm infrastructure due to their abrasion resistance. Geopolymers also respond well industrial settings, where flow concentrations and temperatures are of concern. Where: Large diameter (30-in. and larger) projects that can alternatively consider: dig and replace, CIPP, slip-lining, and other trenchless technologies. In many instances, a geopolymer liner works in conjunction with CIPP and similar technologies, addressing segments which otherwise are impassible due to obstructions, direction changes, etc. Who: Owners benefit from having access to this proven technology when structurally rehabilitating storm, sewer and raw water pipe, and infrastructure.