Abstract: Methods and apparatus for repairing road surfaces mix aggregate and liquified crack sealer on demand into mastic material for direct delivery to the road surfaces. Aggregate flows from a tilted box of a dump truck into a hopper and is conveyed by an auger into a tubular horizontal chamber. Liquified crack sealer is deliverable from a tank to the road surface or into the tubular horizontal chamber where it is mixed with the aggregate by a device into mastic material which is pushed through a vertical opening for delivery directly to the road surfaces. The frame which supports the hopper, conveyor, tank, and tubular horizontal chamber is movably supported on the road surfaces and is hitched to the dump truck.

Abstract: A wheeled asphalt paver vehicle provides a combination of a remixing hopper and a paving screed in a single vehicle. An optional loading conveyor carried by the vehicle facilitates loading of asphalt mix or other paving material into the hopper. A mixer within a lower portion of the hopper keeps the asphalt materials mixed therein. An output conveyor draws asphalt material from the hopper and into a screed for laying onto a surface over which the vehicle is traveling. An optional flow diverter between the output conveyor and the screed is adjustable to provide a greater proportion of the asphalt material to a left side or a right side of the screed. The vehicle can conveniently be controlled by fewer operators than when a separate paver vehicle and a separate remixer vehicle are utilized.

Abstract: Methods for increasing the hardness of aggregate include applying a hardener to the aggregate. The hardener may react with a material of the aggregate and/or a material on a surface of the aggregate. For example, an alkali metal silicate, such as lithium polysilicate, or a colloidal silica may chemically react with calcium oxide and/or calcium hydroxide of an aggregate or on an aggregate to create cementitious material, which may at least partially fill pores in the surface of the aggregate, harden an existing microtexture of the aggregate and/or enhance the microtexture of the aggregate. These characteristics may enhance frictional characteristics, the wear characteristics and the durability of the aggregate, and of any structures formed from composite materials that include the aggregate.

Abstract: Disclosed are an inorganic fireproof and heat-insulating material and an article thereof. The material comprises the following components in weight ratio: 5 parts of A component, 5.5-7 parts of a bonding agent, and 1-1.5 parts of a curing agent, wherein the A component comprises perlite and vermiculite in a weight ratio of 1:4 to 4:1. Both the perlite and vermiculite are in particle form after expansion, and the bonding agent is an inorganic bonding agent. The material is formed by mixing the abovementioned components, then pouring same into a forming mold, and pressing. The present invention has good fireproof performance and heat insulation performance. A fireproof and heat-insulating plate made by mixing the expanded perlite, vermiculite, and elutriated mud (i.e. pottery clay) improves the strength thereof, and satisfies the requirements for an external wall on waterproofing, fireproof and heat insulation.

Abstract: Techniques for disposing of one or more toxic materials, such as coal waste (e.g., fly ash, sludge, etc.), include incorporating the toxic materials into artificial feldspar or forming artificial feldspar from the toxic material(s). The artificial feldspar may be used to form an artificial aggregate, which may be used in a construction material, as road base, as a fill material or for any other suitable purpose. Artificial aggregates that are formed from toxic materials are also disclosed, as are construction materials that include such artificial aggregates.

Abstract: The invention provides a bituminous composition, a process for preparing a bituminous paving composition and process for bituminous paving having lower mixing, paving, and compaction temperatures than for conventional hot-mix paving while retaining sufficient performance characteristics of conventional hot-mix paving. The inventive paving process comprises the steps of injecting a foamable solution comprising a lubricating substance into a heated, asphalt binder to provide a heated, foamed mixture; adding the heated, foamed mixture to a suitable, heated aggregate; further mixing the heated, foamed mixture and heated aggregate to coat the heated aggregate with the heated, foamed, asphalt binder to form a heated paving material; supplying the heated paving material to a paving machine; applying the heated paving material by the paving machine to a surface to be paved; and compacting the applied paving material to form a paved surface.

Abstract: Embodiments are presented herein that provide a filler that is a combination of zeolite and hydrated lime. Addition of this filler to asphalt is more beneficial than addition of either zeolite or hydrated lime alone. The beneficial properties of zeolite include a controlled release of moisture that aids mixture workability and the ability of the asphalt to effectively coat the aggregate particles. The mixture of zeolite and hydrated lime is easier to handle and integrate into a process than use of either compound alone, and it offers a number of other benefits.

Abstract: The invention provides a bituminous composition, a process for preparing a bituminous paving composition and process for bituminous paving having lower mixing, paving, and compaction temperatures than for conventional hot-mix paving while retaining sufficient performance characteristics of conventional hot-mix paving. The inventive paving process comprises the steps of injecting an aqueous solution comprising a lubricating substance into a heated, asphalt binder to provide a heated, foamed mixture; adding the heated, foamed mixture to a suitable, heated aggregate; further mixing the heated, foamed mixture and heated aggregate to coat the heated aggregate with the heated, foamed, asphalt binder to form a heated paving material; supplying the heated paving material to a paving machine; applying the heated paving material by the paving machine to a surface to be paved; and compacting the applied paving material to form a paved surface.

Abstract: The invention provides a bituminous composition, a process for preparing a bituminous paving composition and process for bituminous paving having lower mixing, paving, and compaction temperatures than for conventional hot-mix paving while retaining sufficient performance characteristics of conventional hot-mix paving. The inventive paving process comprises the steps of injecting a heated foamable solution comprising a lubricating substance into a heated, asphalt binder to provide a heated, foamed mixture; adding the heated, foamed mixture to a suitable, heated aggregate; further mixing the heated, foamed mixture and heated aggregate to coat the heated aggregate with the heated, foamed, asphalt binder to form a heated paving material; supplying the heated paving material to a paving machine; applying the heated paving material by the paving machine to a surface to be paved; and compacting the applied paving material to form a paved surface.

Abstract: The invention provides a bituminous composition, a process for preparing a bituminous paving composition and process for bituminous paving having lower mixing, paving, and compaction temperatures than for conventional hot-mix paving while retaining sufficient performance characteristics of conventional hot-mix paving. The inventive paving process comprises the steps of injecting a foamable solution comprising a lubricating substance into a heated, asphalt binder to provide a heated, foamed mixture; adding the heated, foamed mixture to a suitable, heated aggregate; further mixing the heated, foamed mixture and heated aggregate to coat the heated aggregate with the heated, foamed, asphalt binder to form a heated paving material; supplying the heated paving material to a paving machine; applying the heated paving material by the paving machine to a surface to be paved; and compacting the applied paving material to form a paved surface.

Abstract: A bituminous cold glue for cold gluing of construction material and comprising at least 35% by weight of bitumen and at least 10% by weight of oil, and further comprising clay and a dispersing agent, said oil being a vegetable oil compound, based on a carbon chain comprising at least one of the C6 to C12 carbon atoms and further comprising between 0.1 and 5% by weight of a solvent.

Abstract: Embodiments of the invention provide method for preparing mixtures of natural or artificial zeolite with at least one of recycled asphalt shingles and recycled asphalt pavement. The prepared mixtures are also within the scope of the invention. Mixtures prepared as described herein may be useful, for example, for mixture with hot mix asphalt and cold patch asphalt.

Abstract: A bituminous glue for cold gluing of construction material and comprising an amount of non-polymerized oil, said glue comprises at least 35% by weight of bitumen, said glue further comprising clay and a dispersing agent, said amount of non-polymerized oil forming between 5 and 30% by weight of said glue and being not mixed with polymerized oil.

Abstract: Cuttings from drilling through or into natural rock and/or soil can be incorporated into useful, high quality load-bearing structures such as vehicle roads and pads for deep drilling rigs. This process recycles a material previously regarded as valueless at best and often as a pollution hazard. The cuttings, optionally mixed with drilling mud and/or soil, are converted to the useful structures by pozzolanic and/or cementitious reactions after being mixed with suitable other materials and/or are bonded into the useful structures by asphaltic materials.

Abstract: A foamed asphalt cement nozzle assembly is adapted for use in connection with a mixer for mixing aggregate materials and asphalt cement to make asphalt concrete. The foamed asphalt cement nozzle assembly includes a foamed cement mixing chamber, a first inlet for liquid asphalt cement and a second inlet for water, each of which is in fluid communication with the foamed cement mixing chamber. An outlet for foamed asphalt cement is also provided, which outlet is in fluid communication with both the foamed cement mixing chamber and the mixer. The invention also comprises a method for making asphalt concrete using foamed asphalt cement. The method includes introducing aggregate materials into the mixer and heating the aggregate materials to a temperature at least as high as the boiling point of water but no higher than about 285° F.

Abstract: 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 materials along with a binder, will achieve an irreversible pozzolanic chemical reaction necessary for stabilization into a road base. An asphalt emulsifier may be included in the binder to manufacture asphalt stabilized road base. The entire method is a cold batch process.

Abstract: 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 application temperature's than conventional cold paving/coating formulations while providing good mix times and curing behavior. The asphalt-based formulation can be formed by mixing water; an asphalt emulsion; at least one first compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts, and ammonium hydroxide; at least one second compound in aqueous solution selected from the group consisting of Group IIA salts, Group IIIA salts, Group IIIB salts, copper salts, zinc salts, cadmium salts, manganese salts, iron salts, cobalt salts, and nickel salts; and optionally aggregate. Also, a method of preparing an asphalt-based formulation using these components.

Abstract: 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 introduced to the mixed grained aggregate material. A system for preparing the warm mix asphalt composition comprising a drying drum for heating and drying the aggregate component, a mixing mill for mixing the asphalt components and a mix storage silo, where the system also includes foam production facilities for foaming the hard binder before introduction to the mixing mill, is also disclosed.

Abstract: 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 introduced to the mixed grained aggregate material. A system for preparing the warm mix asphalt composition comprising a drying drum for heating and drying the aggregate component, a mixing mill for mixing the asphalt components and a mix storage silo, where the system also includes foam production facilities for foaming the hard binder before introduction to the mixing mill, is also disclosed.

Abstract: Compositions of an aqueous suspension of a drilling mud bentonite conforming to API specification 13A for mastic and sealant compositions.

Abstract: The present invention provides a novel method to produce grade road base material using recycled oilfield waste, called “oil and gas waste,” and aggregate waste and a novel road base material. Hydration and mixing of the waste materials along with a binder, will achieve an irreversible pozzolanic chemical reaction necessary for stabilization into a road base. An asphalt emulsifier may be included in the binder to manufacture asphalt stabilized road base. The entire method is a cold batch process.

Abstract: 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 as an emulsifier or co-emulsifier include its ability to provide superior cationic and anionic emulsions, and slow-setting emulsions at low use levels, and the excellent adhesion of the cured asphalt film.

Abstract: 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 and oil containing a primary surfactant and an amphoteric additive, the pH of the emulsion being equal or approximately equal to the iso-electric point of the amphoteric additive. The compositions of the invention are particularly useful in the preservation of timber.

Abstract: 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; between about 15% and about 45% cellulosic fibers; between about 0.1% and about 10% latex binder; between about 2% and about 9% bituminous material; and about 0% to about 3% alum.

Abstract: 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. The respective flow rates of the reduced-moisture-content sludge and the asphalt mix is controlled via a computer controller. The moisture-reducing step may include at least one of the steps of stirring, mixing, churning, and turning the sludge, and may also include blowing air onto the sludge. The invention also includes a system for performing the method. The system includes a drainage area, a filter at least partially surrounding the drainage area, a first bin adapted to receive sludge from the drainage area, a conveyor having an input at the drainage area and an output at the first bin, and a rotating drum in communication with the first bin for receiving a flow of the sludge from the first bin.

Abstract: 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 emulsion compositions suitable for use as pavement sealers and coatings. The polyphenolics are selected from natural vegetable polyphenolic extracts including Chestnut A, Chestnut N and Sumac-K10; or from synthetic phenolic resins including phenol-formaldehyde, resorcinol-formaldehyde and novolak resins; or mixtures thereof; in amounts of about 0.1% to 10% polyphenolics in the final emulsion, to form and stabilize the emulsion. The emulsions employ a surfactant mixture comprising a nonionic surfactant with a hydrophilic/lipophilic balance index of from about 16 to about 20, and an anionic lignin sulfonate, in amounts of about 0.1% to 3.0% surfactant mixture in the final emulsion. Optionally 0.02% to 2.00% w/w of sodium borate decahydrate may be included.

Abstract: 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 be produced relatively easily at a low cost, it is excellent in water-preventing performance, long-term stability, and self-sealing property, it has adhesiveness as well as shape-retainability and heat resistance, it is relatively low in compression impact resilience, it is excellent in ability to follow a substrate at the time of the application, and it is also excellent in applicability.

Abstract: 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 required for an aggregate is relaxed, is provided. A paving mixture wherein a constituent binder is so prepared that a minute bubble particle is produced and kept in the binder when the mixture is mixed with heating or compacted.

Abstract: 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 so that it contains uncured polymer for use in a variety of compositions including pressure sensitive sealants, caulking sealants, automotive sealants, polyvinyl chloride plastics, rubbers and asphalt cement coatings.

Abstract: 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 coated particulates, notably cold dense building and paving materials such as aggregate and gravel, useful for the construction of, e.g., road and highway surfaces via compaction thereof.

Abstract: 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.degree. C.

Abstract: The present invention relates to a process for the coloration of building materials such as concrete or asphalt by granulated inorganic pigments.

Abstract: 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 having particles which pass through a one-quarter inch minus screen, preferably through a one-eighth inch minus screen, with sufficient water to form a material having a water content of from about 3% to about 20%, based on the weight of the mixture. In a preferred embodiment, the naturally occurring material is solidified into discrete bodies for transportation and/or storage. The discrete bodies can later be comminuted in the presence of water to form the prescribed mixture.

Abstract: 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 optionally, a pH regulating agent. The thickener which may be used to control the viscosity of the emulsion incorporates at least 40% scleroglucan by weight. The emulsion obtained may be used for road building applications, water-proofing in civil engineering or construction works, or for industrial purposes.

Abstract: 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 prepared by the coalescence of asphalt emulsion and that the hydraulic inorganic material and water are present in the interstices between the aggregate fragments; a process for preparing a cement/asphalt mixture, the process being characterized by the steps of adding 2 to 12 parts (in terms of solids content) of a cationic or anionic asphalt emulsion to 100 parts of an aggregate; mixing them; and mixing the resulting mixture with 1 to 20 parts of a hydraulic inorganic material; and a process for preparing a cement/asphalt mixture, the process being characterized by the steps of adding 2 to 12 parts (in terms of solids content) of a cationic or anionic asphalt emulsion to a mixture of 100 parts of an aggregate and 0.

Abstract: 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 comprising an intimate mixture of a water-swellable substance such as a clay and a hydrophobic substance such as vaseline. The sealing agent can be placed in a tubular device for providing water-tightness when making a bushing in a partially porous wall.

Abstract: 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% in its weight ratio to asphalt to the asphalt and aggregate which are mixed in a mixer of an asphalt plant or (2) adding rubber latex of 6 to 30% in its weight ratio to pure asphalt, and adjusting the quantity of the asphalt containing rubber so as to exceed 5.5% and stay below 8.0% in its weight ratio to the asphalt mixture and forming the asphalt containing rubber on the surface of the aggregate.

Abstract: 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 modified by reaction with from 10-30% of a member of the group consisting of acetic anhydride, phthalic anhydride, propylene carbonate, and styrene oxide.

Abstract: 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 hemihydrate (Plaster of Paris).

Abstract: 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 basis) of aqueous emulsion of asphalt, and (b) 60 to 90% by weight of at least one kind of inorganic powder selected from the group consisting of silica stone, silica sand, granite, andesite, shale, kaolin, feldspar, talc, mica, fly ash, slag, iron oxide and graphite. The inorganic powder may also contain 1 to 10% by weight of limestone powder. There is also provided a process for the manufacture of steam-cured aerated light-weight concrete while applying the above anti-corrosive mixture to the reinforcing steel bars used in that process.

Abstract: Coal-aqueous mixture having high solids content and excellent stability are provided by an improved process involving selective mixing and other conditions.

Abstract: Coal-aqueous mixture having high solids content and excellent stability are provided by an improved process involving selective mixing and other conditions.

Abstract: 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 which would occur in the absence of such fatty acid.A water-borne coating containing an effective amount of liquid fatty acid for improved optical properties.

Abstract: 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 compositions not so treated while achieving comparable strengths and durability when the composition is laid down as road paving material. The improved distribution of asphalt reduces usage by 10% to 40% and permits the incorporation of additional finely divided material to achieve higher strengths, or, inversely, to permit a higher percentage of voids to exist in the completed materials so as to provide for a porous paving material with suitable strength. The use of water in quantities of from 1,000 gallons to 3,000 gallons per 100 tons of aggregate and a sulfonic acid source in quantities of from 0.5 to 8 gallons per 100 tons of aggregate to provide an aggregate-acid-water composition having an initial pH of less than 3.

Abstract: More ductile asphaltic pavement compositions, obtained by use of a certain blended Trinidad asphalt cement and certain aggregate mixtures, all in certain proportions.

Abstract: 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 mixture react and chemically combine to form a calcium hydroxide filler material to thus fill the voids and gaps in the rejuvenated asphalt that would otherwise exist. The reaction, being exothermic, increases the temperature of the resultant asphalt based mixture to a level suitable for spreading of the rejuvenated material on a prepared surface. The asphalt oil is preferably preheated using a heat exchanger coil connected to a diesel engine radiator, which coil is immersed in an asphalt oil storage tank carried on the machine so that the viscosity of the oil may be reduced to a reasonable value suitable for pumping to the mixing chamber and spraying on the materials contained therein.

Abstract: 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 completely or partly release their crystal water. The invention further relates to a filler as component of the mixed composition.

Abstract: 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 rate of the scoria aggregate.

Abstract: 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 compacting (as by rolling) to a state of substantial voidlessness, and thereby achieving a pavement which is both strong with respect to bearing strength yet soft and/or flexible with respect to its tendency to crack, and which will optimize a sort of self-rehealing of the membrane if cracking should start to occur.

Abstract: 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, phosphoric or phosphonic acid emulsifier, mixing the emulsion with a fine aggregate and, prior to spreading the aggregate emulsion mixture, introducing an alkaline earth metal set initiator. The resulting composition rapidly breaks to a hard cohesive structure, so as to permit early use by traffic.