The disclosure provides a system comprising one or more supply tanks; a central cement mixing unit; a support unit comprising a compressor and a power supply; a first valve disposed upstream of each of the one or more supply tanks; a second valve disposed downstream of each of the one or more supply tanks; a controller disposed at the central cement mixing unit; and a secondary controller disposed at each of the one or more supply tanks; wherein the one or more supply tanks are coupled to the central cement mixing unit, wherein the compressor is coupled to each of the one or more supply tanks, wherein the power supply is coupled to the compressor and to each of the one or more supply tanks, wherein the controller is communicatively coupled to each of the secondary controllers and to the support unit.

A nozzle includes a main chamber defining a first internal space, a first inlet defined in a first end of the main chamber to couple to a material sprayer, a second inlet to receive a solid material into the main chamber, and an outlet defined in a second end of the main chamber. The first inlet upstream from the second inlet to allow a fluid material to enter the main chamber before the solid material. The main chamber configured to mix the solid material with the fluid material.

The invention relates to a container, wherein the container comprises a wall and a valve, wherein the wall defines an interior cavity, wherein the cavity has an adjustable volume, wherein the cavity contains a composition, wherein the composition comprises a nanomaterial, and wherein the volume of the composition is less than or equal to about 50 vol % of the maximum volume of the cavity.

A computer-implemented method and a computer-based product and monitoring system for contactless assessment of rheological properties of a fluid cement-based product, the method performing a first analysis which obtains the rotation speed of the mixing blades (31) of a truck-mounted concrete mixer drum (30) and detects the variation of the speed constituting a first parameter, performing a second analysis which obtains at least a sequence of images of the fluid product contained within the mixer drum (30), identifies particles, shapes, groups of particles, contours, and/or slope of the fluid product within the collection of sequential images, detects variations of speed and displacement direction of the particles and shapes, constituting a second parameter, performing a third analysis that detects a correlation between each first and second parameters from which the system calculates at least one parameter of rheological properties of the fluid product.

A method and system for concrete monitoring calibration using truck-mounted mixer drum jump speed data selectively assimilated from previous deliveries. In preferred embodiments, the invention surprisingly employs data obtained using different concrete mix designs, as well as jump speed data obtained from high speed mixing after the trucks arrive at the construction delivery site and before pouring the concrete into place at the site. The method involves measuring energy (E) in terms of pressure or force associated with mixing the concrete (“E1”) at a first drum speed (“V1”) and measuring energy (E2) after a speed jump of +/- 2.5 RPM or more to a second drum speed (V2). Slump is calculated using low speed energy/speed/slump curve data, or pre-stored equation wherein slump (S) is derived as a function of slope of the line defined by E1,V1 and E2,V2 and intercept of the plotted relationship (at E axis where V is zero). The E/V/S relationship in the provided concrete is compared to at least two pre-stored data curves across drum speed ranges of 0.5 RPM - 6 RPM and 6 RPM - 20 RPM, to ascertain whether the provided concrete matches any of the stored curve data (i.e., previous concrete E/V/S profiles); and either activating the monitoring system for all drum speed ranges where a match is confirmed or allowing the monitoring system to calculate slump only at low drum speeds (below 6 RPM) and alerting a system user or operator that the system is only active for low speed monitoring

The present invention is a dust shield device that secures over a mixing pail. Powdery material, such as plaster, cement, grout or the like, is poured through the device, and mixed with water inside the pail. The device includes a mounting sleeve, a radial manifold housing and a funnel shaped lid. The manifold housing and lid form a radial pneumatic channel with a circumferentially disbursed air intake that generates a radially uniform airflow that draws in airborne dust that would otherwise escape to the surrounding air. The manifold is connected to a vacuum with an air filter, and generates a dust shield zone and air intake zone above the device. The manifold lid forms a radial guard to prevent downward flows of material and water from entering the manifold, and forms a splash guard to retain upwardly projected splashes of material and water inside the pail.

An all-in-one mobile wellsite service unit for providing equipment and services at an oil and gas well related to well abandonment is provided. The mobile unit comprises a water storage tank, at least one cement mixing barrel for mixing a cement slurry, a progressive cavity pump for pumping the cement slurry, and a hydraulic hose for connecting to a hydraulic power source to provide power to the cement mixing barrel and the progressive cavity pump. The mobile unit may also contain downhole tools needed for well abandonment, including a well cleaning tool, a cementing tool, a hydraulic packer, and more.

An electric work machine allows use of batteries with different sizes with battery covers and allows easy maintenance of a damaged battery cover. A rechargeable concrete vibrator includes a motor, a motor housing accommodating the motor, a battery holder connected to the motor housing to receive a battery in a detachable manner, and a battery cover to cover an overall part of the battery held by the battery holder. The battery cover is attachable to and detachable from the battery holder.

Compositions and methods are provided for a system in which liquid carbon dioxide, or a mixture of liquid and gaseous carbon dioxide, is converted to solid carbon dioxide by exiting an orifice at a sufficient pressure drop, e.g., for delivery of carbon dioxide to a concrete mixture in a mixer.

The disclosure provides a system comprising one or more supply tanks; a central cement mixing unit; a support unit comprising a compressor and a power supply; a first valve disposed upstream of each of the one or more supply tanks; a second valve disposed downstream of each of the one or more supply tanks; a controller disposed at the central cement mixing unit; and a secondary controller disposed at each of the one or more supply tanks; wherein the one or more supply tanks are coupled to the central cement mixing unit, wherein the compressor is coupled to each of the one or more supply tanks, wherein the power supply is coupled to the compressor and to each of the one or more supply tanks, wherein the controller is communicatively coupled to each of the secondary controllers and to the support unit.