Process for producing an acid-resistant barrier seal in soil, an

Details Process for producing an acid-resistant barrier seal in soil, an Process for producing an acid-resistant barrier seal in soil, an

1989-05-30

1991-01-08

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405263, 405128, 166293, E02D 2900

Patent

active

049830759

ABSTRACT:
A process for producing a barrier seal in soil which must be in contact with an acidic water which has a pH below 5.5 wherein a trench is excavated in the soil and the trench produced is filled with a sealing concrete including water, a clay and an acid-resistant granulate with self-filtering properties, the sealing concrete additionally including an aqueous solution of sodium and/or potassium silicate and is devoid of any acidic or acid-generating matter liable to form a silicic acid gel with the silicate. The proportion of sodium and/or potassium silicate incorporated in the sealing concrete is sufficient to give rise to the formation of a leakproof local barrier when the sealing wall is locally subjected to the percolation of acid water originating from the surrounding soil.

REFERENCES:
patent: 3335018 (1967-08-01), Peeler
patent: 3835926 (1974-09-01), Clement
patent: 3837872 (1974-09-01), Conner
patent: 4358221 (1982-11-01), Wickberg
patent: 4615643 (1986-10-01), Gouvenot

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