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| Number | Title | Issue Date |
| 7128767 | Method to upgrade low rank coal stocks The ash content of raw coals, lignite, and other carbonaceous materials is reduced by leaching the high-ash material with an aqueous acidic waste product produced by a Fischer-Tropsch reaction. The acidic aqueous waste is mixed with coal and process conditions are d... | 10/31/2006 |
| 7118624 | Method for making a road base material using treated oil and gas waste material The present invention provides a novel method to produce grade road base material using recycled oilfield waste, called “oil and gas waste,” more specifically, drilling waste and aggregate and a novel road base material. Hydration and mixing of the waste materia... | 10/10/2006 |
| 6855754 | Asphalt-based formulations and method of making and using the same for paving and coating applications An asphalt-based, cold paving/coating formulation that provides increased flexibility with respect to the choice of aggregate types, asphalt emulsion types, type and amount of the surfactants used to produce the asphalt emulsion, asphalt emulsion pH's and applicatio... | 02/15/2005 |
| 6846354 | Process and system for production of a warm foam mix asphalt composition The invention describes a process for preparing a warm mix asphalt composition by mixing an aggregate grain material with a soft binder, and adding a hard binder to the mixed aggregate grain material. The hard binder is foamed in a foaming process before it is intro... | 01/25/2005 |
| 6793726 | Aqueous suspensions with bentonite for mastics and sealants Compositions of an aqueous suspension of a drilling mud bentonite conforming to API specification 13A for mastic and sealant compositions. ... | 09/21/2004 |
| 6540822 | Polybetaines as asphalt emulsifiers A method of emulsifying asphalt using a polyamine polybetaine, preferably a dibetaine, as an emulsifier or co-emulsifier and an emulsion of asphalt, water and a polybetaine, preferably a diamine dibetaine. The advantages of using a polyamine polybetaine a... | 04/01/2003 |
| 6503306 | Composition for impregnating porous materials, preparation and use thereof Composition for impregnating porous materials, in which the composition contains at lease one component having preservative properties or which release a component having preservative properties on heating, the composition comprising an emulsion of water ... | 01/07/2003 |
| 6149831 | Perlite-based insulation board An insulation board suitable for use as a roof insulating board has a density between about 8 and about 15 pounds per cubic foot; a MOR/density ratio of at least 10.5 to 1 and includes, by dry weight, between about 45% and about 76% expanded perlite; betw... | 11/21/2000 |
| 6146453 | Method and apparatus for recovering and recycling sludge and product thereof A method by which dredged sludge is used to make a new asphalt composition. The moisture content of the sludge is reduced by allowing the sludge to drain through a filter. The reduced-moisture-content sludge is heated and combined with asphalt mixture. Th... | 11/14/2000 |
| 6103000 | Polyphenolic surfactant compositions as universal bitumen/water emulsifiers The invention relates to an improved surfactant mixture which permits use of lower concentrations of polyphenolics including natural vegetable polyphenolic extracts and/or synthetic phenolic resins to produce stable anionic slow-setting asphalt-in-water e... | 08/15/2000 |
| 6007615 | Water-swellable compositions and sealants There is disclosed a water-swellable composition that comprises a water-swellable clay, an asphalt, and at least one selected from the group consisting of temperature-sensitivity improving agents and reinforcing fillers. This water-preventing sealant can ... | 12/28/1999 |
| 5944885 | Paving mixture excellent in mixing property and compacting property A paving mixture excellent in mixing property and compacting property, which relaxes temperature condition conventionally required for a paving mixture, and can maintain certain quality and durability even if blending ratio condition conventionally requir... | 08/31/1999 |
| 5880218 | Compounded polymeric compositions utilizing processed paint sludge as a replacement for polymeric components Compounded polymeric compositions containing processed paint sludge putty as a replacement for polymeric components are provided. The paint sludge comprises from about 5 to 90% by weight of the total compounded polymeric composition and may be decatalyzed... | 03/09/1999 |
| 5788756 | Paving composition/building composition including a film forming bitumen in-water mixed emulsion Film-forming bitumen-in-water mixed emulsions comprising intimate immixture of (i) an oil-in-water emulsion of a hard bituminous material and (ii) an oil-in-water emulsion of a soft bituminous material, are well suited for the production of storage-stable... | 08/04/1998 |
| 5743950 | Process for preparing an asphalt composition The present invention provides a process for preparing a dense-graded asphalt composition which comprises adding a hard binder component to a mixture of a soft binder component and aggregate at a temperature of less than 140° C.... | 04/28/1998 |
| 5484481 | Process for the colouration of building materials The present invention relates to a process for the coloration of building materials such as concrete or asphalt by granulated inorganic pigments.... | 01/16/1996 |
| 5290123 | Method for processing and applying pavement material A bituminous sandstone material, which can be applied to damaged pavement areas at ambient temperatures, is prepared by comminuting naturally occurring bituminous sandstone in the presence of water to form an intimate mixture of bituminous sandstone havin... | 03/01/1994 |
| 5246986 | Bituminous binder emulsion with a viscosity controlled by addition of scleroglucan A bituminous binder emulsion is provided and is formed from a dispersion of an organic phase consisting of a bituminous binder in an aqueous phase incorporating an emulsifying system made up of one or more emulsifying agents, a water-soluble thickener and... | 09/21/1993 |
| 5223031 | Cement/asphalt mixtures and processes for preparation of the same The present invention provides: a cement/asphalt mixture comprising an aggregate, an asphalt emulsion, cement, a hydraulic inorganic material and water, characterized in that the surfaces of aggregate fragments are covered with the asphalt particles prepa... | 06/29/1993 |
| 5116413 | Process and sealing agent for producing a watertight and/or gastight bushing of lines in a water-resistant and/or gas-blocking wall, and device for use thereof A process is provided for feeding cables, wires, pipes etc. through a wall in such a way that the water- and/or gas resistance of the wall is maintained and that later on additional cables etc. can be passed through. The process uses a sealing agent compr... | 05/26/1992 |
| 5109041 | Producing method for asphalt mixture A method for producing an asphalt mixture using single particle-size aggregate whose weight ratio passed through a sieve having the size of mesh of 2.36 mm is lower than 15% comprising the steps of: (1) adding foamed surface active agent of 1.0 to 30.0% i... | 04/28/1992 |
| 5034060 | Cationic aqueous bituminous emulsion-aggregate slurries with improved curing rates Slurries are formed with cationic emulsions prepared by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of polyamine with certain polycarboxylic acids, which product is subsequently mo... | 07/23/1991 |
| 4944804 | Plaster of Paris (Stucco) as mixing aid for aqueous bituminous emulsion aggregate slurries Improved mixability (extended set time) and adhesion (asphalt coating on aggregate) are disclosed for cationic and anionic bituminous emulsion-aggregate paving slurries by the addition to the emulsion-aggregate mixture of small amounts of calcium sulfate ... | 07/31/1990 |
| 4778527 | Anti-corrosive composition for iron and steel surfaces and the use thereof for protecting the reinforcing steel bars of autoclaved light-weight concrete There is provided an anti-corrosive mixture for iron and steel surfaces which comprises (a) a mixture composed of 5 to 25% by weight (solid basis) of one or more kinds of aqueous emulsions or aqueous latices of styrene resin and 5 to 15% by weight (solid ... | 10/18/1988 |
| 4670058 | Coal-aqueous mixtures Coal-aqueous mixture having high solids content and excellent stability are provided by an improved process involving selective mixing and other conditions.... | 06/02/1987 |
| 4551179 | Coal-aqueous mixtures Coal-aqueous mixture having high solids content and excellent stability are provided by an improved process involving selective mixing and other conditions.... | 11/05/1985 |
| 4522655 | Metal pigment of improved storage resistance In a composition of matter including a leafing, metallic pigment and a means for inhibiting reaction of the pigment to form hydrogen gas, the improvement including a liquid fatty acid in an amount effective for at least reducing loss of optical properties... | 06/11/1985 |
| 4331481 | Acidic asphaltic composition and method The addition of aqueous dilutions of a sulfonic acid source of 0.2% to 0.8% acid concentration to an aggregate or to a composition of asphalt and aggregate in hot asphalt plants enables a decrease in the amount of asphalt required in comparison to composi... | 05/25/1982 |
| 4274882 | Formulation containing trinidad asphalt for more ductile asphaltic concrete pavements More ductile asphaltic pavement compositions, obtained by use of a certain blended Trinidad asphalt cement and certain aggregate mixtures, all in certain proportions.... | 06/23/1981 |
| 4272212 | Method and apparatus for rejuvenating and recycling asphalt A process for rejuvenating and recycling used asphalt and a machine including a pugmill mixing chamber for mixing crushed asphalt supplied thereto and for mixing water, calcium oxide and asphalt oil therewith is disclosed. The water and calcium oxide mixt... | 06/09/1981 |
| 4242144 | Bituminous mixed composition and filler for same containing non-hygroscopic crystal water-containing substances Hot processed bituminous mixed composition, particularly for road construction, characterized by containing non-hygroscopic, crystal water-containing substances, that upon heating to the mixing temperature of the mixed bituminous composition will complete... | 12/30/1980 |
| 4235640 | Lightweight concrete aggregate and method A lightweight aggregate for use in making concrete which comprises scoria aggregate with the individual particles of the aggregate being impregnated with a slow or medium setting asphalt emulsion in an amount sufficient to materially reduce the absorption... | 11/25/1980 |
| 4227933 | Impermeable membrane containing Trinidad Lake Asphalt and method of achieving same The employing of finely-divided and naturally-occurring particulate matter of Trinidad Asphalt to lock or hold the aggregate filler mixture of the pavement mix in position, almost entirely filling the mix with soft bitumen, permitting subsequent compactin... | 10/14/1980 |
| 4193816 | Quick-setting bituminous emulsion compositions Quick setting, anionic bitumen emulsion compositions, suitable for road paving, recreational surfaces, etc., are formulated by emulsifying the bitumen in water with an ammonium or alkali metal salt of a hydrocarbon-substituted sulfuric, sulfonic, phosphor... | 03/18/1980 |
| 4170484 | Bituminous-emulsion mineral aggregate compositions Surfacing compositions are provided which comprise a mixture of mineral aggregate, such as particulate slag, the residuum of a bituminous emulsion and optionally, a silane adhesion promoter. In the emulsion, the emulsifier employed is an alkoxylated aspha... | 10/09/1979 |
| 4168179 | Bituminous composition Asbestos-free bituminous composition comprising 1-3 wt% high-structure carbon black and 1 to 25 wt% expanded perlite dispersed in asphalt cutback. The composition also contains 0.5 to 5 wt% water.... | 09/18/1979 |
| 4103350 | Method of reducing emission of particulate matter Drum mix asphalt plant apparatus connected to a fiber filter dust collector for removing dust and other light particulate matter produced by operation of the drum mixer. Asphalt material is added to the drum mixer in a manner to minimize smoking of the as... | 07/25/1978 |
| 4100059 | Asphalt recycle system Steam is injected into water to regenerate asphalt waste which is heated in the water to a predetermined temperature. Such heated asphalt waste is mechanically subdivided in the water into aggregate grains each having its surface coated with a thin asphal... | 07/11/1978 |
| 4094696 | Asphalt emulsion paving composition An improved asphalt emulsion composition comprises an oil phase having minor amounts of gilsonite and naphtha and a major amount of asphalt, and a water phase having water and a small amount of a cationic emulsifying agent, wherein the ratio between the o... | 06/13/1978 |
| 4089698 | Process for handling asphaltene concentrates An asphaltene concentrate characterized by its high softening point and by its high viscosity when in the liquid state is rendered into a pumpable form at ambient temperatures by conducting the asphaltene concentrate in liquid state directly from the prec... | 05/16/1978 |
