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| Number | Title | Issue Date |
| 7290960 | Sprayable mining liner A liner is the product of reaction of (a) a hydrophilic prepolymer bearing isocyanate groups; and (b) a water-borne polymer dispersion, the polymer bearing groups that are reactive to isocyanate groups; wherein the dispersion has a sufficiently high solids content, ... | 11/06/2007 |
| 7011865 | Sprayable mining liner A liner is the product of reaction of (a) a hydrophilic prepolymer bearing isocyanate groups; and (b) a water-borne polymer dispersion, the polymer bearing groups that are reactive to isocyanate groups; wherein the dispersion has a sufficiently high solids content, ... | 03/14/2006 |
| 7011766 | Capping and treating a metal-contaminated sediment A method of treating a metal-contaminated sediment includes capping the sediment with a capping product containing sulfur and at least one component selected from the group consisting of clays, clay-sized materials, bulking agents, sand, sand-sized materials, aggreg... | 03/14/2006 |
| 6955502 | Method for repairing in-ground tunnel structures A method for repairing in-ground tunnel structure involves applying a first curable resin over a cementitious liner which lines the interior wall surfaces of the tunnel, drilling drainage holes in the cementitious liner, and filling the drainage holes with a second ... | 10/18/2005 |
| 6923597 | Tail shield for a shield tunneling apparatus Present in a tail shield (1) for a shield tunneling apparatus are a number of grouting lines (3) that are open to a tail shield end (4) and that can be supplied with filling material for grouting a ring gap (7) with the filling material, ... | 08/02/2005 |
| 6821059 | Polyurethane-forming composition with adjustable mix viscosity, geotextile composites prepared therefrom and a process for producing such composites A polyurethane-forming reaction mixture characterized by its ability to be adjusted with respect to its viscosity in response to changing temperature and humidity conditions is achieved with a mixture that includes a liquid polyisocyanate having an isocyanate group ... | 11/23/2004 |
| 6739805 | Waterstop for foundation elements and method of installation A waterstop, 10 or 11, for restricting or preventing the flow of water across the joints of foundation elements 8, such as between or along individual diaphragm wall panels or between or along individual secant wall piles. The present invention ... | 05/25/2004 |
| 6669876 | Method of preparing smooth, watertight concrete surfaces on concrete pools A method of preparing a smooth watertight concrete in-ground pool surface that eliminates the use of a plaster outer surface layer that includes allowing the concrete pool body to cure for at least thirty days at which time a grinder is used to grind the ... | 12/30/2003 |
| 6485234 | Apparatus and method for making cylindrical columns A tool for use with a rotatable drill shaft and a source of pressurized fluidized solidifying agent. The tool member has upper and lower extremities. A coupler is coupled to the upper extremity of the tool member and is adapted to be secured to the drill ... | 11/26/2002 |
| 6447599 | Method of limiting the release of organic materials into the environment during the making of foundations, and concrete which can be used in said method The present invention relates to a method of limiting the release of organic materials into the environment during the making of foundations, according to which a concrete is used which is based on blast furnace slag ground to a fineness of between about ... | 09/10/2002 |
| 6241426 | Method for forming an interconnected underground structure A method is provided for forming an interconnected underground structure which avoids settling of adjacent soil structure. A plurality of underground support columns is initially formed, with the support columns being spaced apart in a predetermined patte... | 06/05/2001 |
| 5988950 | Method and system for preventing upward migration of contaminants in soil A system for preventing upward migration of contaminants in soil having capillary pores defined therein, the system comprising the soil and a hydrophobic substance applied to the soil, the substance being attracted to enter the capillary pores so that a b... | 11/23/1999 |
| 5961437 | Multi-layer waste containment barrier An apparatus for constructing an underground containment barrier for containing an in-situ portion of earth. The apparatus includes an excavating device for simultaneously (i) excavating earthen material from beside the in-situ portion of earth without re... | 10/05/1999 |
| 5897946 | Flowable material to isolate or treat a surface A flowable material to isolate or treat a surface consists of a plurality of manufactured composite particles. Each composite particle includes a core, and a sealant layer at least partially encapsulating the core. The core is relatively dense compared to... | 04/27/1999 |
| 5890845 | Method and means for sealing crawlspace surfaces A method of sealing the entire surfaces of a crawlspace and other areas difficult to access in a structure is set forth in which a uniformly thick layer of a quick drying and moldable lightweight concrete is flowed over the entire surfaces to be covered i... | 04/06/1999 |
| 5816748 | Method for sealing off ground sites The invention pertains to a process for sealing off ground sites in particular a waste dump, abandoned dumping grounds, pipelines or the like, or also excavated construction sites, using sealants, wherein a fully course-controlled boring technique is used... | 10/06/1998 |
| 5806252 | Waterproofing system for hydraulic structures with rigid sheets in synthetic material A waterproofing system and method for hydraulic structures which includes rigid sheets of synthetic material connected with flexible hinges made of sheets of synthetic material. Mechanical anchoring hold the rigid sheets in place.... | 09/15/1998 |
| 5791825 | Device and method for producing a containment barrier underneath and around in-situ buried waste An apparatus for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably on which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under the... | 08/11/1998 |
| 5788422 | Underground barrier construction apparatus with soil-retaining shield An apparatus for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably one which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under th... | 08/04/1998 |
| 5776243 | Permeable cellular concrete and structure A cellular drainage structure is formed of a predetermined volume of a settable, water permeable, cellular concrete product. A concrete mix is formed of a uniformly graded aggregate in the size range from 1/16 inch to two inches and in a quantity correspo... | 07/07/1998 |
| 5641249 | Aggregate extruder This invention is an aggregate extruder for the deposition of a multi-layered aggregate bed having layers of differing aggregate material. The extruder is divided into three sections transversely disposed over a defined surface, each of the sections conta... | 06/24/1997 |
| 5620778 | Clay type liquid-resistant protective layer A liquid-resistant protective layer which at least consists of a material layer containing clay, has, adjacent at least one edge of the layer, at least one groove or slit which extends into the material layer containing the clay to enable sealed joints to... | 04/15/1997 |
| 5593248 | Nontoxic chemical process for in situ permeability enhancement and accelerated decontamination of fine-grain subsurface sediments The remediation of heterogeneous subsurfaces is extremely time consuming and expensive with current and developing technologies. Although such technologies can adequately remove contaminants in the high hydraulic conductivity, coarse-grained sediments, th... | 01/14/1997 |
| 5589257 | Low permeability geosynthetic clay liner and method of manufacture thereof A geosynthetic clay liner with a low permeability or controlled permeability intermediate sheet is provided. The liner includes two outer sheets with two layers of bentonite and an intermediate sheet disposed therebetween. The intermediate sheet may be ri... | 12/31/1996 |
| 5538787 | Material and method for forming an underwater barrier layer A bead for forming a barrier layer over an underwater surface. Generally, a plurality of such beads are required to form an effective underwater barrier layer. Each of the beads comprises a core, preferably formed of a piece of gravel. A sealant layer is ... | 07/23/1996 |
| 5350255 | Geosynthetic clay liner with modified edges for improved sealing A clay liner is provided for use in constructing low permeability barriers in the bottom of landfills and man-made bodies of water. The liner is provided in the form of a layer of bentonite preferably disposed between a primary carrier sheet and a cover s... | 09/27/1994 |
| 5248217 | Process for forming notches in an irrigation lateral A process for forming notched irrigation laterals uses a construction laser adapted to propagate radiation along a planar path, and a device that both detects the radiation and is used to manually form notches in the lateral. The laser is positioned relat... | 09/28/1993 |
| 5160221 | Waterway liner A liner is disclosed for a waterway of the type adapted to overlie the bottom of the waterway while a cementious layer covers and protects the liner. The liner itself is positioned at the bottom of the waterway by a machine having two elongated and spaced... | 11/03/1992 |
| 5151126 | Cement-base injection grout for consolidating structures The invention relates to a cement-based injection grout for filling-in and consolidating fine cracks. According to the invention, the injection grout is produced from a finely ground Portland cement with removal of all the particles of sizes greater than ... | 09/29/1992 |
| 5102267 | Machine for paving a canal bottom A canal paving machine is described. The machine comprises an elongated frame which extends transversely across the canal and which is propelled the length thereof while water continues to flow in the canal. A concrete paver is supported on the frame and ... | 04/07/1992 |
| 5080532 | Self-propelled machine for the concreting of ditches A self-propelled machine for concreting a ditch includes a caterpillar band which contacts and rolls on the bottom of the ditch, a propulsion unit for driving the displacement belt, and a spreading system for spreading concrete on the bottom and sides of ... | 01/14/1992 |
| 5062740 | Laminate forming and applying apparatus and method and product therefrom A continuous structural laminate includes a plurality of continuous generally parallel spaced integrally bonded porous blankets with a continuous polymeric matrix extending through each porous blanket. The polymeric matrices include solidified polymeric m... | 11/05/1991 |
| 5059067 | Method for forming a curved interior profile to a cementitious material A method for forming cementitious material, such as gunite or the like, to a desired cross-sectional profile for an interior structure such as a swimming pool, skateboard bowl or the like. A forming assembly includes a cutting edge, which is formed so as ... | 10/22/1991 |
| 5011338 | Canal trimming machine A canal trimming machine is disclosed which is designed to trim the bottom and sides of an earthen canal so that the canal may be lined and paved. The machine comprises a frame which extends across the width of the canal and which has propelling tracks at... | 04/30/1991 |
| 5002438 | Method of rehabilitating manholes by custom lining/relining A method for lining or relining a sewer manhole, apparatus comprising an improved leak resistant manhole, and a cementitious mixture for lining/relining manholes. A homogeneous, monolithic, cementitious liner is spray applied in place within a concrete or... | 03/26/1991 |
| 4990210 | Apparatus for introducing and joining diaphragms in slotted walls Apparatus is provided for introducing and joining diaphragms in slotted walls. The slotted inner connecting pipe of one diaphragm is introduced into the slotted outer connecting pipe of another diaphragm. Furthermore apparatus for fusing together the two ... | 02/05/1991 |
| 4954019 | Method and apparatus for lining a canal An apparatus for lining a canal is described as well as the method for lining the canal. The apparatus comprises an elongated frame which extends transversely across the canal and which is propelled the length thereof. A concrete paver is supported on the... | 09/04/1990 |
| 4948296 | Swimming pool construction A method of constructing a swimming pool by laying a concrete shell of 80 mm thickness without any substantial reinforcement. A glass reinforced plastic of 5 mm thickness is then laid over the concrete once the concrete has cured. This particular combinat... | 08/14/1990 |
| 4859367 | Waste solidification and disposal method The invention provides a new method for solidifying and disposing of waste. The waste is combined and mixed with an alkali-activated silico-aluminate geopolymer binder. The resulting mixture is bound together with a geopolymeric matrix. When allowed to se... | 08/22/1989 |
| 4828432 | Apparatus for forming a continuous plastic sheet Apparatus for lining an irrigation canal with a sheet of fiber-reinforced plastic includes structure for depositing a layer of resin and fiber on a web of flexible carrier material, partially curing the resin prior to laying the sheet in the canal, and th... | 05/09/1989 |
