Sondages Injections Furages 's.i.f.' Enterprise Bachy

Sondages Injections Forages Entreprise Bachy

Sondages Injections Forages 's.i.f.' Entreprise Bachy

Michel A Gandais

Francis M Delmas

Yves M Lacour

Francoise M Dufournet Bourgeois

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.

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

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.

Growing community of inventors

Perthes, France

Michel A Gandais