A portable concrete mixer includes a frame, a hopper, coupled to the frame, for receiving therein dry commercially available prepackaged concrete mixes containing gravel aggregates, a chute coupled to the hopper, a water supply system that supplies water to the chute, a motor, and an auger coupled to and rotated by the motor. The auger includes a shaftless helical auger body extending from the hopper into the chute via an aperture in the hopper. The shaftless helical auger body has an interior volume and a plurality of fingers extending from the auger body into the interior volume. The shaftless helical auger body has an uneven pitch such that a second portion of the helical auger body in the chute has a greater pitch than a first portion of the helical auger body in the hopper.

A portable concrete mixer includes a frame, a hopper, coupled to the frame, for receiving therein dry commercially available prepackaged concrete mixes containing gravel aggregates, a chute coupled to the hopper, a water supply system that supplies water to the chute, a motor, and an auger coupled to and rotated by the motor. The auger includes a shaftless helical auger body extending from the hopper into the chute via an aperture in the hopper. The shaftless helical auger body has an interior volume and a plurality of fingers extending from the auger body into the interior volume. The shaftless helical auger body has an uneven pitch such that a second portion of the helical auger body in the chute has a greater pitch than a first portion of the helical auger body in the hopper.

A device for loading, mixing and delivering ingredients includes a measuring bucket pivotably mounted to the free ends of pickup arms pivotably mounted to a mixing vessel including a lid having a depressed basin with an opening formed therethrough. The mixing vessel and the measuring bucket are simultaneously moved with the measuring bucket in a loading position to fill with ingredients. The measuring bucket is moved relative to the mixing vessel from a transport position to an emptying position emptying the ingredients into the mixing vessel. A linkage is pivotably mounted between the pickup arms and the lid to simultaneously move the lid from a closed position to an open position as the measuring bucket moves from the transport position to the emptying position. The ingredients are mixed by mixing paddles inside the mixing vessel, and the mixed ingredients are released from the mixing vessel through an open gate.

A method and apparatus for a mobile twin shaft mixer, which includes a mixing chamber formed of a flexible sheath and a frame formed of a rigid material. A benefit to the mobile twin shaft mixer can be a compact, lightweight, high capacity twin shaft mixer useful for mixing, proportioning, and transporting construction materials in mobile operations. A benefit to the methods of use of the mobile twin shaft mixer can be the supply of modern construction materials to the delivery location at the point of installation.

The invention relates to a device (10) for inerting radioactive waste, comprising: a mixer (12) comprising a radioactive waste inlet (56), a conditioning unit able to house a container, a transfer member connecting the mixer and a container accommodated by the conditioning unit, a handling screw, the handling screw comprising: two ends, one end being connected to the radioactive waste inlet (56), a cradle elongated along an axis between the two ends and delimiting an inner volume, the inner volume of the cradle being able to accommodate matter toward the mixer (12), a transfer rotor, in particular a coreless screw, extending in the inner volume, and a motor able to rotate the transfer rotor.