Ground electrode backfill composition, anode bed

Details Ground electrode backfill composition, anode bed Ground electrode backfill composition, anode bed

1990-05-11

1991-06-25

Barr, Josephine

Compositions

Electrically conductive or emissive compositions

Elemental carbon containing

252509, 204196, 204197, 204147, 106713, 106716, 106717, H01B 118, C23F 1306

Patent

active

050265083

ABSTRACT:
A low resistance non-permeable backfill especially for use in vertical anode beds for the cathodic protection of subsurface metallic structures includes a mixture of portland cement, calcined fluid petroleum coke, micro-size carbon rods and high structure carbon black mixed with water and pumped as a high density fluidized suspension into the anode bed, particularly around the casing of a deep anode bed of the general type described in U.S. Pat. No. 3,725,699 to Tatum.

REFERENCES:
patent: 2553654 (1951-05-01), Heise
patent: 3573427 (1971-04-01), Minsk
patent: 3725669 (1973-04-01), Tatum
patent: 3941918 (1976-03-01), Nigol et al.
patent: 3962142 (1976-06-01), Freeman et al.
patent: 4301356 (1981-11-01), Tanei et al.
patent: 4786388 (1988-11-01), Tatum, Jr.
patent: 4806272 (1989-02-01), Wiley

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