The right thermal grout mix correctly applied is a critical element in constructing segments of underground Power Transmission Lines. Thermal grout is used to transmit heat from underground electrical cables into the surrounding soil or rock, said Guy Dickes, president, Constellation Group LLC, who over the past four years has been responsible for planning and executing grouting for four major underground power transmission projects from 13.6 kV to 230 kV with segments from 100 to 2,000 linear feet in length.
