Abstract: A method and apparatus to simplify the measurement of lightweight concrete components and to recycle waste materials that result from lightweight concrete block manufacture. The method involves separating coarse and fine components of the waste. The apparatus uses several devices, separately or in combination, to separate the components, such as a sieve, auger, and blower. The coarse components are conveyed by auger, gravity or other means to be measured by weight in a first hopper. The fine components are conveyed by gravity, blower, auger or other means to be measured by volume in a second hopper. Fresh materials may be added to both hoppers. The materials from both hoppers are then mixed together in a primary mixing chamber and finally conveyed into molds for curing before use.

Abstract: A method and apparatus for providing a continuous product stream of lime slurry to a job site which is located remote from a permanent lime production plant utilizes a primary and auxiliary tank which are mounted on a portable frame structure. Lime and water are mixed in the primary tank to form a lime slurry. The lime slurry is then introduced into the auxiliary tank. A product stream of lime slurry is drawn from the primary tank until it is depleted. Lime slurry is then drawn from the auxiliary tank to supply a continuous stream of lime slurry to the job site while the primary tank is being refilled with lime and water to form a second lime slurry. The second lime slurry is then introduced into the auxiliary tank so that it is filled again and a second product stream of lime slurry is drawn from the primary tank. The process is repeated until a desired amount of lime slurry is supplied to the job site.

Abstract: This invention concerns a device for continuously injecting liquid additives into a fluid.The device includes a jet eductors system for prediluting the additives.Applications in the oil and related industries, the building industry and similar. FIG.

Abstract: A method of mixing cementitious material, liquid, and aggregate uses a cementitious material/liquid premixer to form concrete. The method of mixing includes: dispensing cementitious material through a material outlet; receiving the cementitious material into an enclosed screw conveyor assembly and moving the cementitious material with said screw conveyor toward a conveyor outlet; introducing liquid into the screw conveyor so as to deposit a quantity of the liquid into the cementitious material as the cementitious material is moving toward the conveyor outlet; agitating and mixing the liquid and the cementitious material together by movement of the screw conveyor, thereby forming a flowable slurry; and discharging the flowable slurry from the conveyor outlet into a final product mixing chamber where aggregate material will be introduced.

Abstract: A material blender mixer is mounted to a chassis of a vehicle. The mixer includes a first material holder bin mounted to the vehicle chassis, a second material holder bin mounted to the chassis positioned reawardly of the first material bin, a device for dispensing the second material from the second material holder bin, a cross auger attached to the chassis and disposed beneath the dispensing device and a mixing auger in fluid communication with the cross auger. A conveyor extends through the first material holder bin and has a dispensing end in fluid communication with the cross auger. A device for agitating the first material in the first material holder bin is provided and includes a vertical agitator and a horizontal agitator, wherein fingers are disposed in both of the agitators adapted to agitate material held in the first material holder bin. Further, a method for preparing a settable material is disclosed, including use of a moist class F fly ash and a dry class C fly ash.

Abstract: There is provided in a pressure feed pipe for feeding cement paste under pressure a wall panel assembly formed of a plurality of wall panels having collision surfaces and through holes and arranged at predetermined intervals. High-strength or superhigh-strength mortar or concrete is produced by kneading a designed amount of binder material comprising cement or cement and a pozzolan material together with a predetermined amount of water, passing this cement paste through the abovementioned pressure feed pipe to crush the cement balls contained in the cement paste and thus to homogenize the paste, and kneading the thus homogenized cement paste together with fine aggregate or fine and coarse aggregates.

Abstract: A method for maintaining in a computer memory laboratory test records for a plurality of projects, particularly adapted to projects for cementing oil or gas wells, are disclosed. Records of data identifying the plurality of projects and records of test data for the plurality of projects are entered within the computer memory. Data from selected records are compiled in a predetermined report format. More particularly disclosed is a method of designing a cement job for an oil or gas well. This includes receiving into a computer, programmed with records of data in predetermined categories for a plurality of previous cement jobs, a field of search for a selected predetermined category of data pertinent to a cement job being designed. Automatic searching within the computer finds records which contain data within the field of search. These are displayed. Design data are selected in response to the displayed records and the design data are stored in the computer in a record for the cement job being designed.

Abstract: A method for treating asphalt roofing shingles to be used for recycling in an asphalt plant which mixes asphalt roofing shingles with between about 15% and 50% by weight of a carrier aggregate. The aggregate is fed into a shredder with the shingles or is otherwise mixed with the comminuted shingles to form a recyclable asphaltic material which may be easily stored and transported, and which may also be used in the preparation of asphalt paving composition.

Abstract: The present invention relates to a method and a system for recycling wash residue of ready mixed concrete include the steps of condensing used cement sludge to a predetermined concentration, storing the condensed sludge, sampling the stored sludge and determining the unhydration ratio of cement contained in the sludge, and weighing the stored sludge based on the determined unhydration ratio of cement in order to prepare a new batch of ready mixed concrete or mortar.By determining the unhydration ratio of cement contained in the sludge which has been condensed to a predetermined concentration, it becomes possible to accurately know the ratio of cement contributing as cement and its ratio contributing as the aggregate in a new batch of ready mixed concrete. A new batch of ready mixed concrete can be prepared by weighing the amount of the sludge on the basis of the determined unhydration ratio. The ready mixed concrete thus prepared will have a desired hardening strength and drying shrinkage.

Abstract: A mixing apparatus comprises two or more tubs in which mixtures can be mixed to obtain averaging of a particular property, such as density. Two recirculation lines are used. One recirculates between an initial mixing tub and a mixing inlet, and the other recirculates from the additional, secondary averaging tub(s) and the mixing inlet. Computer control responds to densities of fluids recirculated through both of the recirculation lines. In a preferred embodiment, the computer is also responsive to pressure of one of the inlet substances. In response to these measured inputs and other data entered through a data entry terminal, the computer generates control signals for controlling the inputs of both of two inlet substances. In a preferred embodiment, the apparatus and a corresponding method utilize displacement tanks both as averaging tubs and as conventional displacement tanks.

Abstract: An improved silo and delivery system for efficiently handling dry mortar-blend compositions at construction sites is disclosed. Mortar-blend compositions are premixed to desired specifications and packaged at remote mixing stations into large bag containers that are transported to the construction site. A silo designed for uniquely servicing batch mixers is provided at the construction site for storing the premixed composition. The bag contents are emptied into the silo and are sealed therein against exposure to environmental elements. The silo contents are discharged by means of simple gravity flow on a batch-need basis into a batch mixer operatively underlying the silo.

Abstract: A method of mixing particulate cement and water in a primary mixing vessel to form a slurry batch, includes introducing a measured quantity of water into the vessel, introducing a measured quantity of particulate cement into the vessel, agitating the water and cement in the vessel to form a slurry, and while continuing such agitating, pumping slurry from the lower interior extend of the vessel and delivering the pumped slurry to the upper interior of the vessel, at high velocity, removing slurry from the vessel for flow to an auxiliary mixing vessel for mixing with aggregate, and employing wash water to wash remanent slurry from surfaces in the primary mixing vessel for flow to the auxiliary vessel.

Abstract: The present invention is directed to a method for manufacturing a concrete which comprises the steps of mixing 20 to 100% of the total weight of cement used with water in an amount of 20 to 50% of this cement weight in order to prepare a stiff-consistency cement paste, afterward mixing the thus prepared cement paste with a coarse aggregate, further mixing 80 to 0% of the total amount of the cement and sand therewith in the order of the cement and the sand or at one time, and then mixing therewith the remaining water necessary to harden the total cement; or the present invention is directed to a method for manufacturing a concrete which comprises the steps of mixing 20 to 100% of the total weight of cement used with water in an amount of 20 to 50% of this cement weight and a coarse aggregate, so that a stiff-consistency cement paste is caused to adhere to the coarse aggregate, afterward mixing 80 to 0% of the total weight of cement and sand therewith in the order of the cement and the sand or at one time, and

Abstract: A fluid agitating apparatus is disposed in a vessel containing a body of fluid to be agitated. The fluid agitating apparatus includes a housing having an inlet at an open lower end thereof, and an outlet at an open upper end thereof, with a flow passage disposed through the housing communicating the inlet and the outlet. The flow passage is preferably circular in cross-section and has a minimum diameter at a throat thereof. The diameter of the flow passage increases continuously from the throat toward both the inlet and the outlet. A vertically upward directed nozzle is located in the flow passage below the throat for inducing flow of fluid from the body of fluid in which the housing is submerged into the inlet and upward through the flow passage. A tangentially directed nozzle is disposed in the flow passage above the throat for inducing a swirling flow in the fluid flowing upward through the flow passage.

Abstract: A method and apparatus for the mixing of fly ash and a wetting agent to obtain a slurry for the ultimate disposal of fly ash. The apparatus is a slurry gun having an introduction chamber, the wetting agent being introduced horizontally into the chamber under a controlled pressure while the fly ash is aerated and introduced into the top of the chamber at an acute angle with respect to the horizontal so that the fly ash is introduced downwardly and outwardly in the direction of the flow of the wetting agent and being also under a controlled pressure, the combination of aerated fly ash and wetting agent being passed through a contorted descending path to create turbulence for mixing. A second embodiment includes a vibrator operably connected to the introduction chamber for dislodging any accumulated build up of fly ash.

Abstract: The quantity of water on the surface of sand particles is reduced by applying an impact force, e.g. centrifugal force created by a rotating disc. The sand particles thus treated are especially suitable for preparing a green concrete compound or a cement mortar by mixing them with water, gravel and cement.

Abstract: A method for the preparation of drilling mud wherein solid and liquid phases of drilling mud are mixed in a vessel (2) to obtain a homogeneous suspension. After the mixing the drilling mud is caused to pass under pressure through apertures (5 or 6) provided in a stirring member (3 or 4) of a piston type, the apertures being of a diameter which is greater than maximum size of an individual solid phase particle but smaller than the diameter of aggregates of particles, to prepare dispersed drilling mud.

Abstract: A process and apparatus for the continuous preparation of a molding mater comprising a granular and/or pulverulent charge agglomerated by a binder-hardener system are disclosed. An intimate and homogeneous pre-mix is formed by malaxation of the charge and only one of the binder-hardener system components, to the mixture is then added the second binder-hardener component into a thin film malaxation apparatus, the mixture is malaxated as a thin film for a few seconds and then is discharged at its point of end use.