Bloomington, IL
GeoSpray®: Sanitary Sewer Interceptor and Manhole Lining

Project Overview
A 54” concrete sewer in Bloomington, IL, was beginning to show
signs of corrosive deterioration above the flow line of the sewer.
To prevent the corrosion from reaching the steel framework of
the reinforced concrete pipe, the Bloomington and Normal Water
Reclamation District (BNWRD) wanted a 1” maximum corrosion
resistant lining installed to extend the useful life of the existing
pipeline. They had additional constrains on project footprint
and traffic disruption. Milliken Infrastructure Solutions provided
BNWRD with thickness and specification recommendations as
well as test reports that demonstrated corrosion resistance and
long-term performance of GeoSpray®.

The BNWRD was interested in a spray-on lining system
alternative to CIPP. At the 2015 WEFTEC Conference in Chicago,
IL, the BNWRD learned of the GeoSpray mortar’s capabilities as
a geopolymer mortar. Compared to the CIPP system, GeoSpray
mortar allowed for a cost-effective and quick lining solution to
achieve the BNWRD’s rehabilitation goals.

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