Grout compositions having high thermal conductivities

Details Grout compositions having high thermal conductivities Grout compositions having high thermal conductivities

C - Chemistry, Metallurgy

04

B

C04B 28/18 (2006.01) F24J 3/08 (2006.01)

Patent

CA 2553005

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 and 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.

L'invention concerne des coulis à conductivités thermiques élevées supérieures à environ 1,4 Btu/hr-ft- ·F et à faibles conductivités hydrauliques situées dans la plage comprise entre environ 5x10-9 cm/s et environ 1x10-8 cm/s. Lesdits coulis comprennent de l'eau et une composition de coulis disponible en sachet unitaire. La composition de coulis comprend de la bentonite calcique présente à une quantité comprise entre environ 15 % et environ 45 %, de la bentonite sodique présente à une quantité comprise entre environ 15 % et environ 45 %, de la farine de silice présente à une quantité comprise entre environ 10 % et environ 35 %, et du graphite en paillettes présent à une quantité comprise entre environ 10 % et environ 75 %, toutes ces valeurs étant exprimées en pourcentage en poids par rapport à ladite composition de coulis.

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