The present disclosure involves systems and methods for applying CO2 to concrete, which may be performed in-situ or through a separate, stand-alone process. According to another embodiment disclosed herein, a system and method for applying CO2 to one or more materials used in the production of concrete is also provided.

A system for producing an asphalt mix output suitable for use as an asphalt pavement is provided. The system may include a preliminary mixing unit configured to mix asphalt shingles with hot fluid asphalt to melt the asphalt shingles. The molten asphalt formed from the asphalt shingles and the hot fluid asphalt may be mixed with aggregate material and/or recycled asphalt material to form an asphalt mix output. An intermediate tank may store the molten asphalt prior to mixing with the aggregate material and/or the recycled asphalt material

The invention provides compositions and methods directed to carbonation of a cement mix during mixing. The carbonation may be in a stationary mixer or a transportable mixer, such as a drum of a ready-mix truck.

A system for producing an asphalt mix output suitable for use as an asphalt pavement is provided. The system may include a preliminary mixing unit configured to mix asphalt shingles with hot fluid asphalt to melt the asphalt shingles. The molten asphalt formed from the asphalt shingles and the hot fluid asphalt may be mixed with aggregate material and/or recycled asphalt material to form an asphalt mix output. An intermediate tank may store the molten asphalt prior to mixing with the aggregate material and/or the recycled asphalt material.

The present invention relates to a process for the manufacture of a grout for concrete comprising a stage of mixing a hydraulic binder and water, characterized in that the process comprises a stage of deep freezing the water in the solid form.

In accordance with one embodiment, a method is provided that includes providing a liquid nitrogen storage system configured to cool a supply of liquid nitrogen to a temperature below the vapor point of liquid nitrogen; coupling a piping system with the liquid nitrogen storage system to convey a portion of the supply of liquid nitrogen from the liquid nitrogen storage system; coupling the piping system with a liquid nitrogen control valve configured to control a flow of liquid nitrogen to at least one liquid nitrogen dispensing head; disposing the at least one liquid nitrogen dispensing head above a conveyance device operable to convey an aggregate stream of a concrete batching plant during use; and disposing the at least one liquid nitrogen dispensing head in a position to dispense an output flow of liquid nitrogen onto the aggregate stream of the concrete batching plant during use.

A mixer for ceramic feedstock pellets with a tank, a mixing shaft, and a heat exchanger including a cooler for the cooling of the content of this tank is provided. A controller controls the heat exchanger which includes a heater arranged to heat the content of this tank to a temperature comprised between a lower temperature (TINF) and a higher temperature (TSUP) stored in a memory for a specific mixture, and the heater exchanges energy with a heat exchange and mixing temperature maintenance circuit, external to this tank, and wherein the thermal inertia of this circuit is higher than that of this fully loaded tank. The invention also concerns a method for mixing raw material for powder metallurgy, implementing a specific injection molding composition and a specific binder.

The invention provides compositions and methods directed to carbonation of a cement mix during mixing. The carbonation may be in a stationary mixer or a transportable mixer, such as a drum of a ready-mix truck.

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.

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.