Report No DWI0328

Oct 1986

A series of laboratory and field experiments have been carried out on two epoxy resin systems for relining potable water mains to determine the effect on organic leachate levels of increasing the air-cure time from 4 to a minimum of 16 hours.

Laboratory experiments were conducted to assess the effect of duration of the air-cure, temperature during cure and some minor formulation changes.

The best process for each resin system, as indicated from laboratory work, was then tested in a series of field trials.

The results showed that significant improvements in leachate levels could be obtained by increasing cure time from 4 to 16 hours. As a result of this work, specific recommendations are made regarding the epoxy resin relining process.

Copies of this report may be available as an Acrobat pdf download under the 'Find Completed Research' heading on the DWI website.