Static structures (e.g. – buildings) – Specified terranean relationship – With waterproofing means; e.g. – covering – coating – or lamina
Patent
1976-12-17
1980-01-01
Leppink, James A.
Static structures (e.g., buildings)
Specified terranean relationship
With waterproofing means; e.g., covering, coating, or lamina
52741, 52 1, E02D 2700
Patent
active
041809530
ABSTRACT:
A horizontal array of first elongated electrodes are embedded in a foundation wall above the footing level. A second elongated electrode is embedded in the footing directly below the center line of the first array, and extends diagonally downward in the footing. A rectifier circuit, having an AC input permanently connected to the AC mains, has a positive output terminal connected in parallel to all of the first electrodes and a negative output terminal connected to the second electrode. With such arrangement, the DC current path established when an upward capillary flow of soil moisture reaches the level of the first electrodes is effective to provide a hydrofuge barrier to the capillary flow. Switching means may be associated with the output of the rectifier for alternately switching the positive and negative terminals between (1) alternate ones of the first electrodes, for effecting a drainage operation, and (2) between all of the first electrodes and the second electrode, to effect a barrier to further capillary flow.
REFERENCES:
patent: 3070528 (1962-12-01), Lipcsey
patent: 3962142 (1976-06-01), Freeman
Application of Electrokinetic Phenomena . . . .COPYRGT. 2/12/65, vol. 118, Art. 14, pp. 585-602, Annals of the N.Y. Academy of Sciences.
Mihaescu Constantin
Moraru Dinu S.
Tetcu Ion
Leppink James A.
Raduazo Henry E.
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