Abstract: Methods, systems, and devices, are developed for in-situ placement of a concrete mix that can have the thixotropy to hold vertical dimension without containment, while maintaining pliability to be pumped into place and manipulated to a desired shape, and can be combined with concrete set accelerators, allowing subsequent layers of this concrete mix to be continuously stacked in place to build tall walls and such without the use of forms. Concrete without these special properties is pumped toward the point of placement where it is modified by injecting and mixing, into that line of pumped concrete, an admixture containing thixotropes, thickeners and/or set accelerators or other modifiers to provide these properties and other improvements. This method allows conventional plant batching with commonly available constituent materials for batching an economical concrete that is delivered to a jobsite and then is pumped most of the way to a point of placement.

Abstract: A device and a process for the continuous application of a refractory slurry to a surface incorporate a batch reactor (10) for the controlled mixing of the slurry, a product vessel (60) in communication with the batch reactor (10) to contain the mixed slurry, and a variable-rate spraying applicator or nozzle in communication with the product vessel and with an air supply. A controller (100) controls input to, output from, and the operation of, the batch mixer (10), and monitors batch production. The controller (100) monitors the amount of slurry contained in the product vessel (60). If the level of slurry in the product hopper is such that the product hopper cannot accommodate an additional batch of slurry, the controller interrupts batch production and resumes production when the product hopper can accept the contents of the batch reactor (10).

Abstract: A portable mixer that has a first auger, a second auger, a motor, a material loading location, where material may be loaded into the mixer, and a dispensing conduit. The motor powers both the first auger and second auger. Further, the second auger may rotate in a first rotational direction and a second rotational direction and the second auger substantially prevents material from exiting a dispensing conduit when the second auger rotates in the first rotational direction and the second auger distributes material through the dispensing conduit when the second auger rotates in the second rotational direction.

Abstract: The present invention relates to an apparatus for producing a fuel made by mixing water with oil in a vacuum state. The apparatus includes: a vacuum tank adapted to seal an internal space thereof to allow the internal space to be maintained to a vacuum state; a vacuum pump located on one side of the vacuum tank to suck the air from the interior of the vacuum tank, so that the vacuum tank is kept in the vacuum state; a stirring vessel located inside the vacuum tank in such a manner as to communicate with the vacuum tank through a bypass pipe, the water and oil being supplied thereto; and stirrers rotating by the drive of motors to stirringly mix the water with the oil.

Abstract: There is disclosed a system for depositing building materials comprising a motor vehicle, a container comprising a material depositing system and at least one device for removing the container from the motor vehicle. The device can comprise one or more outriggers which are adapted to remove the container from the motor vehicle and which can be used to deposit the container on a job site. In addition there is a system which includes a hydraulically controlled crane and silo doors for allowing material to be automatically added to containers for mixing building materials.

Abstract: A method of preparing a concrete composition for downhole injection includes utilizing a controller to control a process including circulating process water in a process water supply loop for a predetermined period while monitoring and controlling the temperature and flow rate of the process water, circulating aqueous-based air entrainment solution in an aqueous-based air entrainment solution supply loop for the predetermined period and controlling the flow rate of the aqueous-based air entrainment solution and after the predetermined period of time in which the flow of process water and aqueous-based air entrainment solution have stabilized, simultaneously actuating valves to divert and mix the process water, the aqueous-based air entrainment solution and compressed air to produce an air-entrained foam and mixing the foam with a concrete composition to be deployed downhole.

Abstract: An applicator and method for dispensing a stream of a particulate and a fluid from a cannula and a mixing tip. The mixing tip includes a housing having an inlet, an outlet, and a mixing channel extending therebetween. A fin is positioned within the housing and extends along at least a portion of the mixing channel. The fin spirals about the mixing channel from the inlet toward the outlet for mixing and distributing the particulate generally uniformly within the fluid. The stream is directed into the mixing channel of the mixing tip and spiraled along the fin within the mixing channel. The spiraling increases turbulence and mixes the stream into a mixed stream of particulate and fluid. The mixed stream is discharged from the mixing tip for being dispensed onto an anatomical site.

Abstract: A method for depositing a lost circulation material into a drilling fluid holding tank storing a quantity of lost circulation material in a storage receptacle at a well drilling site. A selected quantity of the lost circulation material is conveyed directly from the storage receptacle into the drilling fluid holding tank. A second end of a fluid port assembly is positioned in fluid communication with a fluid contained in the drilling fluid holding tank. The fluid is drawn from the drilling fluid holding tank through the fluid port assembly and discharged into the flexible exhaust hose and onto the lost circulation material.

Abstract: Proposed is a pinch valve (1) which has a hose-like valve element (3), an actuating element (18) arranged on the outer circumference of the valve element (3), and at least one radially movable plunger (33a, 33b) arranged between the actuating element (18) and the valve element (3). On the inner side (39) of the actuating element (18) there is situated at least one actuating surface, which extends in the circumferential direction and at the same time axially and which bears against a plunger (33a, 33b). By way of guide means (28a, 28b), it is ensured that, in the event of rotation of the actuating element (18), the actuating surface slides on the at least one plunger (33a, 33b) and pushes the latter radially inward, because the spacing of the actuating surface to the valve element (3) varies over the longitudinal profile thereof.

Abstract: The present invention relates generally to systems and methods for transporting quantities of lost circulation material. The system includes at least one pump, at least one intake assembly, at least one exhaust assembly, and can also include at least one intake member operably connected to the intake assembly, and at least one exhaust member operably connected to the exhaust assembly.

Abstract: The present invention relates to an apparatus for producing foamed bitumen for a road construction machine, comprising at least one mixing device having a reaction chamber, in which hot bitumen and at least one reaction fluid can be mixed together via an inlet device comprising at least one inlet nozzle and can be discharged from the mixing device via an outlet device, with at least one compressed-air device being provided, via which the inlet device and/or the outlet device can be subjected to a compressed-air stream for testing and/or cleaning purposes. The present invention further also relates to a method for maintaining such an apparatus.

Abstract: The present invention provides a system for treating fly ash and a method of use thereof. The system and method allow for the quick and consistent application of a chemical entity to fly ash so that the characteristics of the fly ash are changed in order to allow use of the fly ash in a new capacity. One specific example is the use of treated fly ash in concrete. The system disclosed herein may be used to treat fly ash as it is produced at a coal-burning power plant or as it is unloaded from a pneumatic truck.

Abstract: The invention relates to methods and apparatus for a vibration-free placement of the concrete and for placement and enforced speed inertial compaction of the concrete under a high pressure. The method permits to optimize the values of the compaction factor of the concrete mix being placed without vibration. Whereupon, in the case of variation assigning and implementing (adjusting and optimizing) the integral indices of the mix, and/or the plume modes, and/or the space medium characteristics, increasing the concrete strength in early time of the concrete curing, increasing the width of the placed and compacted mix in one step of concreting, reducing the mix losses in the case of placing with compacting the concrete mix.

Abstract: A warm mix asphalt plant comprising a counter-flow drum, apparatus for precisely metering flows of A/C and water, an asphalt expander with no moving internal parts where a circular curtain of flowing clean water is mixed with a coaxial circular curtain of moving heated A/C to create asphalt foam which is heated and mixed inside a lower portion of the asphalt expander and then distributed to cover aggregate inside the counter-flow drum.

Abstract: A process for manufacturing set cellular cement, including the steps of: (i) mixing cementitious material, water, foaming agent and optionally additives into a free flowing slurry having a slump of at least 100 mm; subsequently (ii) injecting and distributing air into the slurry of step (i) to form a cellular slurry; subsequently (iii) casting the cellular slurry of step (ii); and finally allowing the cellular slurry to set. And, an apparatus for carrying out the process.

Abstract: A drum mixer is provided with a rotatable cylinder in which aggregates, reclaimed asphalt pavement and liquid asphalt are mixed to produce an asphaltic composition. The drum cylinder includes a first region, in which virgin aggregate is heated and dried by heat radiation and the stream of hot gases produced by a burner flame flowing in countercurrent flow to the aggregate itself to establish a highly beneficial heat transfer relationship. A second region doubles as combustion and mixing zones. In the mixing zone the reclaimed asphalt pavement and liquid asphalt is added and mixed with the aggregates. The combustion zone is formed along the center of the mixing zone by an elongated combustion assembly disposed along the central axis thereof. The combustion assembly and chamber extend from the discharge end of the drum through the mixing zone to the heating and drying zone to segregate the hot gases from the asphalt, thereby preventing degradation of the final product.

Abstract: In a concrete pump for wet spraying, in which standard concrete is pumped to a mixing jet, compressed air and if necessary a hardening accelerant are mixed into the concrete stream, which is applied with the jet and compressed; it is the purpose of the invention in its initial version on the one hand to minimize the fine dust yield at the jet, on the other hand to guarantee the availability of the amount of compressed air needed for the wet spraying process, characterized by a regulating section (20) in which the capacity of the concrete pump (1) forms a standard volume for monitoring the amount of compressed air flowing to the mixing jet (3) in such a way that the relationship of the amount of compressed air mixed in per unit of time to the amount of concrete pumped in per unit of time corresponds to a desired value which produces the smallest fine dust yield when the concrete is applied.

Abstract: Shotcrete gun consisting of a concrete container and a spraying device, such as a worm screw, and a nozzle for pressurized air. The whole shotcrete gun assembly is mounted on a traversing mechanism allowing the shotcrete gun to be shifted in the horizontal, vertical and depthwise directions beside the element to be shotcreted.

Abstract: An injection system for asphalt, asphalt-containing or other viscous compositions, comprising a mixing drum or receptacle, an injection device having a housing and mounted nozzle jet for preparation and discharge of a premix comprising such asphalt or other composition(s) admixed with staple fiber, means for supporting the injection device, and means for supplying composition and fiber components through the injection device in flowable condition, the composition flow pattern being arranged external and generally concentric to the fiber flow and in a downstream blocking flow pattern relative to the fiber flow to assure wetting and encapsulation thereof before discharge of the premix; and a method for introducing staple fiber and filler or other additives, as desired, into the asphalt composition by using the injection device.

Abstract: A process for the preparation and immediate use in situ of ready to use blends of structural material, such as plaster, mortar, stucco, tile adhesive or similar blends, which, in contrast to the usual methods does not use as a raw material a dry mixture of the three main components binder, filler and additives. Instead a dry mix of binder and filler is prepared at the building site, and an aqueous solution of the additives is added in a separate mixing operation, immediately followed by the application in situ of the finished blend. This method avoids the difficulties associated with the use of dry mixtures containing all three components. The invention includes an apparatus for mixing and immediate application of the blends as defined by the process claims.

Abstract: A mobile concreting apparatus and method which may be used, in particular, for on-site construction of swimming pools. It includes a vehicle supporting a plurality of containers, each adapted to contain one of the ingredients of concrete. Each container is provided with its own ingredient feeder which feeds the ingredients to a mixing device mounted on the vehicle to create a concrete slurry. The slurry is transferred from the mixing device to the surface to be coated by a structure including a slurry pump, a hose and a nozzle. Each ingredient feeder can be individually varied in the rate at which it feeds its ingredient so that the relative composition of the slurry, and the flow rate of the slurry, can be rapidly and selectively varied on the job site to meet the particular requirements for each job. In addition, feed rate settings which provide a desirable composition and overall feed rate can be noted and reproduced on subsequent occasions when the same composition and feed rate are desired.

Abstract: The present invention relates to a spraying unit for unhardened concrete and the like, which is provided with an apparatus capable of mixing a constant quantity of quick-set additive, for example, into unhardened concrete to be sprayed.The apparatus capable of mixing the constant quantity of quick-set additive into unhardened concrete and the like is adapted to usually carry and supply the constant volumetric weight and quantity of quick-set additive outside a quick-set additive container regardless of the amount of the quick-set additive stored inside the container.

Abstract: The invention refers to fibre reinforced shotcrete and it more particularly resides in an improved method for manufacturing structures of such concrete by means of shotcrete. According to the new method a dry mixture of a binding agent and ballast is supplied with chopped fibrous reinforcing material through a feed opening located in the spraying nozzle of the spraying apparatus upstream from the position in which water is added to the mixture.

Abstract: Spraying of materials, which prior to the spraying operation have been mixed from two airborn material flows in a spray nozzle, results in a high wastage rate. It has now been found that this wastage can be highly reduced, if in an appropriate apparatus one of the material flows is restricted, whereas the other material flow is allowed to expand when introduced axially into and mainly in the center of the first restricted flow of material, the second expanding flow of material thereby further being used to create by ejector effect a suction acting upon the restricted flow of material.

Abstract: 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 asphalt material due to high temperature within the mixer, and the resulting dust and other fine particulate matter evolved from aggregate material within the drum mixer is withdrawn and collected in a fiber filter dust collector system such as a baghouse. The collected dust is returned to the drum mixer to be coated with asphalt material therein, so that the returned dust becomes admixed with the asphalt aggregate contents of the drum mixer.

Abstract: A device for dispersing in the atmosphere a residual gas, especially a residual gas containing gaseous hydrocarbons, comprises an open ended mixing conduit having two end sections, at least one injection nozzle assembly each of which comprises at least one nozzle opening into an injection zone defined in the vicinity of at least one of the mixing conduit end sections. Each nozzle of each assembly is connected to a conduit which is connected, in turn, to a common source of pressurized residual gas, and the nozzles of the various assemblies are distributed in the injection zone, and constructed in such a manner that the ratio of the square root of the passage section of said mixing conduit to the square root of the sum of the passage sections of said nozzles of the various assemblies is comprised between 35 and 300.

Abstract: This mobile mixing apparatus utilizes a conventional pneumatic tractor trailer suitable for transporting and discharging granular bulk material which is modified to discharge and mix a liquid material with the granular material. The modification includes a partition creating a separate liquid compartment in the vehicle tank and a liquid discharge line connected between the liquid chamber and the pneumatic discharge line and having a flow control assembly. The flow control assembly includes a pumping and metering system for discharging an accurately measured quantity of liquid into the pneumatic discharge line for mixing with the granular material prior to discharge.

Abstract: Lightweight gypsum wallboard produced by continuously combining a small amount of surface active agent with a liquid stream which stream is made up of substantially all of the liquids to be used in the manufacture of a continuous web of gypsum wallboard, subjecting this mixture to an intense agitation with vaned saw tooth-like rotary blades in a foam generator while adding a controlled quantity of air thereto, forming a uniformly dispersed foam of very small bubbles from the liquid by completely generating all of the surface active agent therein to form this foam, and mixing this foamed liquid with finely ground dry calcined gypsum in a suitable mixing device to form a foamed settable gypsum slurry, disposing the slurry between paper cover sheets, and forming a continuous web of gypsum wallboard.

Abstract: A device for the in situ building up of fibre-reinforced mortars and plastics, said includes an inner tube serving to forward a stream of air-born fibres. Surrounding the inner tube is a jacket with means for supplying pressurized air thereto, and having at its front end an inward inclining slit or bores. Surrounding the jacket is an outer tube with means for supplying the product to be reinforced thereto, the outer tube having an outlet at its front end for passage of the mixture leaving the device.