Please use this identifier to cite or link to this item:
https://hdl.handle.net/11681/12357
Title: | Improving electric grounding in frozen materials |
Authors: | Delaney, Allan J. Sellmann, P. V. (Paul V.) Arcone, Steven A. |
Keywords: | Electrical conductivity Electrical grounding Electrodes Permafrost Shaped charges Electric currents Frozen ground Frozen soils Electrical resistivity |
Publisher: | Cold Regions Research and Engineering Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
Series/Report no.: | Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 82-13. |
Description: | Special Report Abstract: This study shows that resistance to ground of a simple vertical electrode in frozen fine-grained soil can be lowered significantly by placing it in a hole backfilled with a conductive soil-salt mixture. These tests were performed near Fairbanks, Alaska, in perennially frozen silt. Three electrodes were installed in holes created by detonating standard military shaped charges placed at the ground surface. The backfill contained varying amounts of salt. Measurement of resistance to ground of each electrode was made seasonally. The resistance to ground was lowered by an order of magnitude by the addition of a water-saturated salt-soil backfill. Improvement persisted six months after the backfill was placed and allowed to freeze. The degree of improvement provided by this technique will be a function of grain size and permeability of the surrounding soil. |
Rights: | Approved for public release; distribution is unlimited. |
URI: | http://hdl.handle.net/11681/12357 |
Appears in Collections: | Special Report |
Files in This Item:
File | Description | Size | Format | |
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SR-82-13.pdf | 750.41 kB | Adobe PDF | View/Open |