Patent EA-001542-B1 (EA)
Title: Compositions for treating soils, method of preparation and use thereof
Inventor: LAUDET ALAIM
IPC: C09K17/48
Filed: 1997-11-25
Abstract: 1. A composition for treating and stabilising soils, in particular humid soils, comprising, in the form of a powder of particles with size grading less than 2 mm, of quicklime and/or hydraulic binders with calcium base, characterised in that it additionally comprises a non-aqueous fluid additive capable to agglomeration between the finest particles of the composition. 2. A composition for treating soils according to claim 1 characterised in that it has granulometric distribution, when the particles with size less than 32 μm amount less that 30% of total composition, predominantly less than 20% thereof, preferably less than 10% thereof. 3. A composition for treating soils according to claim 1 characterised in that it has granulometric distribution, when the particles with size less than 32 μm amount less that 5% of total composition, preferably less than 3% thereof. 4. A composition for treating soils according to any of claims 1-3 characterised in that it has granulometric distribution, when the particles with size more than 1 mm amount less that 20% of total composition, predominantly less than 10% thereof and preferably less than 1% thereof. 5. A composition according to any of claims 1-4 characterised in that said additive is hydrophobic and loses its ability to agglomerate while hydratation of at least part of quicklime or hydraulic binder. 6. A composition according to any of claims 1-5 characterised in that said additive evaporates, at least partially, at temperature of the reaction of quicklime or hydraulic binder with water. 7. A composition according to any of claims 1-6 characterised in that said additive is a composition selected from the following group, comprising mineral oils and polyolefines and mixtures thereof. 8. A composition according to claim 7 characterised in that said mineral oil is a clarified mineral oil, which preferably does not contain or almost does not contain an aromatic fraction and polynuclear compounds. 9. A composition according to claim 8 characterised in that said clarified mineral oil contains 50-80% alkanes, in particular, 60-70% alkanes, and 20-50% cycloalkanes, in particular, 30-40% cycloalkanes. 10. A composition according to claim 7 characterised in that said polyolefin is polyalphaolefin or polyintraolefin. 11. A composition according to any of claims 1-10 characterised in that it comprises said fluid additive in the amount of 0,1-5%, preferably about 0,5-2% with respect to total composition weight. 12. A composition according to any of claims 1-11 characterised in that it additionally comprises a substance increasing ability to agglomerate of fluid additive. 13. A composition according to claim 12 characterised in that a substance increasing ability to agglomerate of fluid additive is a polybutene. 14. A composition according to any of claims 1-13 comprising a quicklime, characterised in that it has reactivity in the interval less that 25 minutes, preferably less than 10 minutes, in particular, less than 5 minutes. 15. The process for preparation of the composition for treatment of soils according to any of claims 1-14 characterised in that it comprises pounding of the quicklime or hydraulic binder with calcium base into fine powder, insertion of fluid additive into the powder and mixing of obtained composition. 16. The process for preparation of the composition for treatment of soils according to any of claims 1-14 characterised in that it comprises insertion of fluid additive into the quicklime or hydraulic binder and pounding of the quicklime or hydraulic binder into the powder during or after said insertion with simultaneous mixing. 17. The process according to any of claims 15 or 16, characterised in that it comprises slight heating of the additive before its insertion for increasing of its fluidity and improvement of conditions of insertion stage. 18. The use of the compound according to any of claims 1-14 for treatment and stabilisation of soils of the work sites.