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| Number | Title | Issue Date |
| 4659259 | Method and device for mixing stabilizing chemicals into earthen formations A method and device for properly mixing stabilizing chemicals into earthen formations. A helical blade of one or more convolutions is attached to a hollow torque tube and rotated down into the soil. As the device is rotated through the soil to be stabiliz... | 04/21/1987 |
| 4647259 | Sealing ponds and reservoirs by natural materials There is provided a process for rendering certain layers impervious to the seepage of water through same. Such layers are of value in preventing water seepage into structures, and also from ponds, from water reservoirs and the like. The water impervious l... | 03/03/1987 |
| 4637759 | Method for forming a moisture barrier in a soil containing soluble salts The invention provides a method for improving the nature of soil in a salty land not suitable for agriculture by forming a moisture barrier in the soil with formation of a water-impermeable layer of soil underground. The method comprises sprinkling a wate... | 01/20/1987 |
| 4625802 | Potassium silicate clay stabilization process An aqueous solution having potassium silicate dissolved therein is injected into a subterranean sandstone formation containing water-sensitive fine particles, including clays. Potassium silicate stabilizes the fine particles for a substantial period of ti... | 12/02/1986 |
| 4623283 | Method for controlling water influx into underground cavities Disclosed is a method for minimizing the entry of water into a mined cavity or underground formation which has thereabove a semi-permeable layer of a shaly material or rock directly below a source layer of water-saturated sand. By means of a borehole, a f... | 11/18/1986 |
| 4617132 | Method of altering the permeability of a hydrocarbon-containing subterranean formation A method of reducing the permeability to water of a subterranean geological formation containing sandstone. The method is carried out by contacting the formation with an aqueous mixture comprising a water-soluble anionic polymer having a molecular weight ... | 10/14/1986 |
| 4615643 | Method of sealing off a mass of waste stock containing metal cations A method for sealing a mass of stored waste containing cations comprises insulating the waste mass with at least one grout barrier which retains heavy metallic cations. The grout barrier is established by filling the hollows in the soil or fissured rocks ... | 10/07/1986 |
| 4606675 | Method of and apparatus for soil stabilization Soft soil stratum is stabilized by jetting powdery agent into the ground and mixing and agitating the same with the soil, wherein a rotary shaft is inserted into the ground and a powdery stabilized agent carried by air is pneumatically transported by way ... | 08/19/1986 |
| 4565577 | Pollutant-resistant sealing composition The present invention relates to compositions for making sealing walls, dump linings and the like, especially barriers placed in the ground. The compositions contain expandable clay minerals, cement and fillers in aqueous suspension, as well as additives ... | 01/21/1986 |
| 4562348 | Fiber optical luminescence measuring system for measuring physical quantities with time- or frequency-divided signal information A fiber optical luminescence measuring system for measuring a change in a physical quantity employs a transmitter/receiver unit and a sensor unit for the physical quantity optically linked by at least one optical fiber. The sensor unit is arranged to emit... | 12/31/1985 |
| 4560588 | Method of consolidating sand Sandy soils, e.g., loess-containing desert soils, are treated with an aqueous dispersion of pyrogenically produced silicon dioxide and/or corresponding mixed oxides of silicon to achieve consolidation of the sand.... | 12/24/1985 |
| 4540845 | Method and composition for protecting an electrical grounding device Method and composition for protecting an electrical grounding device having a generally vertically disposed metal tubular electrode buried in the ground. Near the lower end of the tube, slots are provided in the sidewalls through which a special viscous f... | 09/10/1985 |
| 4534926 | Uninhibited bentonite composition The present invention relates to a nonhydrated bentonite intimately contacted with a polypropene, polybutene, or mixtures thereof to provide a formable and shapable non-aqueous bentonite composition particularly useful as a water barrier. The bentonite co... | 08/13/1985 |
| 4534925 | Uninhibited bentonite composition The present invention relates to a non-hydrated bentonite intimately contacted with a polypropene, polybutene, or mixtures thereof to provide a formable and shapable non-aqueous bentonite composition particularly useful as a water barrier. The bentonite c... | 08/13/1985 |
| 4521136 | Rapidly dissolvable silicates and methods of using the same Rapidly dissolvable powdered silicates having a molar ratio of silicon dioxide to alkali metal oxide in the range of from about 1.5:1 to about 3.3:1 wherein the alkali metal is selected from the group consisting of sodium, potassium and mixtures thereof. ... | 06/04/1985 |
| 4508472 | Method for controlling moisture-expansive clay supporting building foundations A method for preventing or greatly reducing damage to building foundations resulting from the swelling of moisture-expansive clay beneath and about such foundations. The method includes the steps of first forming a trench about the foundation, the trench ... | 04/02/1985 |
| 4497596 | Method of minimizing fines migration in a subterranean formation A method of stabilizing fines within a permeable subterranean formation comprising contacting the fines with an effective amount of an organic polycationic polymer which contain two quaternary ammonium moieties in the polymer repeating unit.... | 02/05/1985 |
| 4492494 | Process for stabilizing aqueous solutions used in the preparation of hydrophilic polymeric gels The invention relates to a process for stabilizing an aqueous gel-forming system comprising one or more water-soluble acrylic monomer as gellifying agent, methylenebis-acrylamide co-monomer and/or one or more mono- or bivalent aldehyde as cross-linking ag... | 01/08/1985 |
| 4474408 | Method for removing ammonium ions from a subterranean formation The ammonium ions in a subterranean clay-containing formation may be removed by flushing the formation with a calcium ion containing restoration fluid having substantially the highest pH effective to prevent precipitation of calcium hydroxide from said re... | 10/02/1984 |
| 4470727 | Apparatus and process for foamed cementing Process and apparatus for preparing a substantially uniform, gas-containing cement slurry by directing two pressurized streams of a gas-containing hydraulic cement slurry to a common in-line focal point in a generally opposed fashion so that good mixing i... | 09/11/1984 |
| 4467015 | Waterproofing structure The present invention relates to a waterproofing structure and method, and, in particular, to a flexible water-impervious sheet material, and to a method of using same, for providing an effective barrier against water seepage.... | 08/21/1984 |
| 4465402 | Method for removing undesired components from the soil A method for removing undesired components from the soil which comprises screening adjacent soil from the contaminated soil having the undesired components therein, supplying an extracting agent, suitable for removing the undesired components, to the soil... | 08/14/1984 |
| 4465518 | Process for strengthening soft soil A high water content soft soil, for example from the sea or river bed, may be improved in strength by incorporating thereinto a finely divided, quenched iron blast furnace slag treated with sulfuric acid, and a Portland cement. The sulfuric acid-treated s... | 08/14/1984 |
| 4443133 | Method for achieving acceptable U3 O8 levels in a restored formation Leached formations having residual soluble uranium minerals therein are restored by treating the formation under alkaline conditions with a source of phosphate ion whereby insoluble uranium phosphate compounds are formed thereby lowering the residual solu... | 04/17/1984 |
| 4436453 | Machine for and method of hardening soft ground in depths Agitation shafts provided with agitation vanes at lower portions thereof are fastened rotatably to the outer circumferential surface of a support cylinder to form a soft ground hardening machine. Connecting means are provided between upper and lower porti... | 03/13/1984 |
| 4429647 | Method of and device for loosening agriculturally used soil A method of and device for loosening agriculturally used soil, especially for loosening in depth compacted agriculturally used soil, according to which a current of compressed air is introduced into the soil to be loosened and is released in or below a mi... | 02/07/1984 |
| 4425165 | Stabilizing clay soil with hydroxy-aluminum and cellulosic polymers The present invention provides a method of stabilizing clay soil having a high water content by mixing an effective amount of hydroxy-aluminum and cellulosic polymer with the clay soil to deactivate water and thereby assist in preventing such water from f... | 01/10/1984 |
| 4425167 | Stabilizing clay soil with a mixture of hydroxy-aluminum and base The present invention provides a method of stabilizing clay soil by mixing an effective amount of dry hydroxy-aluminum and dry base with the clay.... | 01/10/1984 |
| 4424076 | Stabilizing clay with hydroxy-aluminum and base The present invention provides a method of stabilizing clay soil by mixing an effective amount of dry hydroxy-aluminum and dry base with the clay.... | 01/03/1984 |
| 4404105 | Process for treatment of waste Process for the irreversible treatment of toxic waste by means of a silicate, in the presence of water, in such a way as to form a solid aggregate includes treatment of the silicate in an acid medium, for the purpose of obtaining silicic acid of low molec... | 09/13/1983 |
| 4402630 | Machine for and method of hardening soft ground Agitation shafts provided with agitation vanes at lower portions thereof are fixed rotatably around a support cylinder to form a soft ground hardening machine. A direction control unit is provided at a lower portion of the support cylinder so as to contro... | 09/06/1983 |
| 4400114 | Earth anchor apparatus and method An apparatus and method for installing an extending plate earth anchor using extension plates, a hydraulic jack which works against the side of the wall, and techniques for load stress distribution are shown and described.... | 08/23/1983 |
| 4394213 | Hydroxy-aluminum/lignin sulfonate compositions A composition comprising salts of lignin sulfonate and hydroxy-aluminum and water. The composition stabilizes soil formations from the effects of water and increases the water resistance of paper products.... | 07/19/1983 |
| 4380408 | Stabilizing clay soil with dry hydroxy-aluminum A method of stabilizing clay soil comprising admixing the clay soil with an effective amount of dry hydroxy-aluminum.... | 04/19/1983 |
| 4378997 | Hydration-expansive crushing cartridge A hydration-expansive crushing cartridge which is prepared by filling a hydration-expansive crushing agent into a container made of a material which allows the permeation or penetration of water and which can be broken by an external force. The cartridge ... | 04/05/1983 |
| 4377419 | Stabilizing clay soil with hydroxy-aluminum solution A method of stabilizing clay soil comprising admixing the clay soil with an effective amount of a solution of hydroxy-aluminum having a concentration of at least 4 molar.... | 03/22/1983 |
| 4372786 | Stabilizing clay soil with chemical solutions A method of stabilizing clay soil comprising admixing the clay soil with an effective amount of a solution of chemicals comprising hydroxy-aluminum and a chemical selected from the group consisting of potassium chloride, potassium nitrate, potassium sulfa... | 02/08/1983 |
| 4367985 | Method of sealing salina excavations Disclosed is a method of sealing salt mine headings. Salting out substances, adapted in quantity and quality for properties of effluent from the rift, are introduced into a rift in a rock mass, thus causing crystallization of salts identical or isostructu... | 01/11/1983 |
| 4360599 | Stabilizing clay soil with dry chemical mixtures A method of stabilizing clay soil comprising admixing the clay soil with an effective amount of a dry mixture of chemicals comprising hydroxy-aluminum and a chemical selected from the group consisting of potassium chloride, potassium nitrate, potassium su... | 11/23/1982 |
| 4354874 | Composition and process for consolidating soil An easily pumpable, liquid alkali metal, e.g., sodium silicate composition of controlled gelling characteristics contains water, an alkali metal silicate, glyoxal, optionally a Group I-III metal salt, e.g., calcium chloride, and from 0.005 to 0.10 weight/... | 10/19/1982 |
