| 摘要 |
Disclosed is a method of installing a geothermal heating system comprising creating a bore hole in ground with said bore hole being located substantially in a Vadose Zone inserting at least one heat loop in said bore hole filling said bore hole with a grout material, including class F fly ash in a range of approximately 50-80 percent by weight of said grout material and cement kiln dust in a range of approximately 20-50 percent by weight of said grout material; allowing said grout material to harden.
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