A discharge gate for a gypsum slurry mixer is provided, and includes a gate adapter having an inlet opening configured for receiving the slurry, and an outlet opening configured for delivering the slurry to a dispensing device. The gate adapter has two different transitioning cross-sectional geometries at opposite ends. Specifically, the gate adapter includes an inlet section having a quadrilateral inlet opening; an outlet section having a substantially circular outlet opening; and a transition section sandwiched between the inlet and outlet sections.

A mixing and extrusion machine for tire sealant materials of the type comprising: a dump extruder equipped with conical converging twin screws located in a batching chamber, said chamber having a low pressure feeding area and a high pressure ducted area; a removable blind flange for temporarily sealing the outlet of said batching chamber so that said material is forced to recirculate between said duct area and said feeding area within said batching chamber, said chamber thereby also acting as a compounding chamber; and an inlet port located in the high pressure ducted area, the inlet port capable of introducing a diluent during mixing of a tire sealant material.

A transportable concrete mixing plant is provided and includes a frame, a mixing drum for mixing concrete, a conveying system having at least one rail for moving a pre-measured quantity of premix concrete to the mixing drum, and a supply hopper for directing the pre-measured premix concrete into the mixing drum. The rail forms a support track that is traversed by the supply hopper, which travels from a dispensing position near the mixing drum to a loading position spaced from the mixing drum. Optionally, a concrete pump dispenses flowable concrete received from the mixing drum and pumps it to a remote location, such as a work site.

A discharge gate is provided for delivering a mixed slurry from a gypsum slurry mixer, and includes a first extractor port configured for generating a first density slurry for a first gypsum layer, and a second extractor port configured for generating a second density slurry for a second gypsum layer. A channel is defined by a front panel and a side panel of the discharge gate for delivering the first and second density slurries from the slurry mixer. The first extractor port extends semi-tangentially from the front panel of the discharge gate, and is connected in fluid communication with the front panel via the channel and a first slurry passageway disposed within the first extractor port for delivering the first density slurry.

Provided is an efficient and energy-saving building slurry stirring device. The device includes a grouting assembly, which includes a base, a storage tank, a discharge pipe, a grouting pump and a control box. The storage tank is arranged at the top of the base, the discharge pipe is located at one side of the storage tank, the grouting pump is arranged on the discharge pipe, and the control box is fixed to the top of the base. When the fluidity of a grouting material in the storage tank is reduced due to solidification, the stirring assembly can stir the grouting material in the storage tank. Then, the stirring assembly stops stirring the grouting material to save energy. After the grouting is completed, an inner wall of the storage tank can be cleaned by the stirring assembly.

Provided is an efficient and energy-saving building slurry stirring device. The device includes a grouting assembly, which includes a base, a storage tank, a discharge pipe, a grouting pump and a control box. The storage tank is arranged at the top of the base, the discharge pipe is located at one side of the storage tank, the grouting pump is arranged on the discharge pipe, and the control box is fixed to the top of the base. When the fluidity of a grouting material in the storage tank is reduced due to solidification, the stirring assembly can stir the grouting material in the storage tank. Then, the stirring assembly stops stirring the grouting material to save energy. After the grouting is completed, an inner wall of the storage tank can be cleaned by the stirring assembly.

Disclosed are method and system for treating concrete in mixing drums of delivery vehicles having automated rheology (e.g., slump) monitoring systems programmed to dose fluids into concrete based on the monitored rheology. The present invention takes into account a Revolution-To-Discharge value (RTD) which reflects drum rotations needed to move concrete towards and through the mixing drum opening from which concrete is discharged, and also takes into consideration a Volume-Per-Revolution-Upon-Discharge (VPRUD) value which reflects the relation between the rate of discharge and rheology (e.g., slump) of concrete upon discharge. The invention is especially useful for reclaiming concrete in the drum after delivery and can confirm rheology based upon peak (maximum) discharge pressure. The present inventors found surprisingly that discharge pressure readings are useful for recalibrating automated rheology monitoring systems as well as for reporting and/or treating the remainder concrete.

Disclosed are method and system for treating concrete in mixing drums of delivery vehicles having automated rheology (e.g., slump) monitoring systems programmed to dose fluids into concrete based on the monitored rheology. The present invention takes into account a Revolution-To-Discharge value (RTD) which reflects drum rotations needed to move concrete towards and through the mixing drum opening from which concrete is discharged, and also takes into consideration a Volume-Per-Revolution-Upon-Discharge (VPRUD) value which reflects the relation between the rate of discharge and rheology (e.g., slump) of concrete upon discharge. The invention is especially useful for reclaiming concrete in the drum after delivery and can confirm rheology based upon peak (maximum) discharge pressure. The present inventors found surprisingly that discharge pressure readings are useful for recalibrating automated rheology monitoring systems as well as for reporting and/or treating the remainder concrete.

Disclosed herein are methods and systems for the transportation and delivery of set-delayed cement compositions to a well site. A method of cementing may comprise preparing a set-delayed cement composition. The method further may comprise storing the set-delayed cement composition. The method further may comprise transporting the set-delayed cement composition to a well site in a containment vessel. The method further may comprise discharging the set-delayed cement composition from the containment vessel and into a wellbore.

A method for producing a three-dimensional object from a curable binder composition with an additive manufacturing process, the method including the steps of: producing the curable binder composition in the setting state, preferably by mixing the constituents of the curable binder composition in a mixing unit, conveying the curable binder composition in the setting state via a supply line to a printing head movable in at least one spatial direction, applying the curable binder composition in the setting state by means of the printing head, wherein the curable binder composition is preferably applied layer-by-layer, to form the three-dimensional object, determining a pressure drop over a length section of the supply line with at least two pressure measuring device(s), optionally, determining a flow rate of the curable binder composition in the supply line, optionally determining a temperature of the curable binder composition in the supply line.