Geopolymer

Geopolymer applications are ideal for large-diameter pipelines and are an eco-friendly solution composed of more than 50 percent recycled materials. Using engineered designs, our crews rehabilitate aging and deteriorated pipes by applying geopolymer material at structural thicknesses. Site prep and installation can be completed in a single day per segment, with no material lead time. The geopolymer lining system provides a monolithic rehabilitation of pipes and structures. The application recovers and protects the pipe surface by filling in voids, cracks, and other defects while also restoring joints. Once applied, the material quickly forms into a crystalline structure for higher resistance to acids, lower porosity and greater surface durability. Geopolymer spray applications extend the life of the host pipe while providing corrosion resistance and eliminating infiltration. This is a minimally invasive and cost-effective rehabilitation solution.

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When do we use geopolymer?

• Equipment fits inside of a 30” pipe, but becomes more cost effective at larger diameters

• Odd shapes

• Access issues

• Tight turns 

• Tar Coating (can be lined over)

• Large protruding taps (can be sprayed around)

• Pipe condition that would create a fin in CIPP

• Environmental areas where the customer is concerned about styrene (UV also an option here)

• Weight of CIPP liner creates OTH need – Geopolymer may be the better option

• When the spec calls for it (and not shotcrete or portland cement)

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Installation 
Using a spin caster or low-pressure hand-sprayer, our crews apply a consistent and evenly coated layer of geopolymer material from the top to bottom of the structure. Following the coating, crews use trowels to smooth out the finish. Once applied to the damaged or deteriorated surface, the geopolymer material quickly forms into a crystalline structure for higher resistance to acids, lower porosity and greater surface durability.

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Inliner site crews can complete preparation and installation for each segment in the same day, eliminating lead time for ordering materials. Typically, the application of the geopolymer coatings require one pass, in the range of thickness of .5” to 1.5”, with a maximum thickness of approximately 3”. The quick cure rate shortens bypass time and allows flows to be re-established much quicker than Portland cement-based mortars.

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