GROUT COMPOSITIONS HAVING HIGH THERMAL CONDUCTIVITIES

摘要

Grout slurries are provided that have high thermal conductivities of greater than about 1.4 Btu/hr-ft-~F and low hydraulic conductivities ranging from about 5x10-9 cm/s to about 1x10-8 cm/s. Such grout slurries comprise water a nd a grout composition that is available as a one-sack product. The grout composition includes calcium bentonite present in an amount of from about 15 % to about 45 %, sodium bentonite present in an amount of from about 15 % to about 45 %, silica flour present in an amount of from about 10 % to about 35 %, and flaked graphite present in an amount of from about 10 % to about 75 % , all by weight of the grout composition.