Carboncure Technologies, Inc.

George Sean Monkman

Dean Paul Forgeron

Kevin Cail

Joshua Jeremy Brown

Paul J Sandberg

Mark MacDonald

Robert Niven

John Kline

Mark Macdonald

Alex Hanmore

Jay Crossman

Michael Thomas

Provided herein are methods and compositions for carbonation of recycled concrete aggregates (RCA) to produce carbonated RCA. In addition, uses of the carbonated RCA, such as in building materials, and building materials containing RCA, are included. Carbonation of RCA may be used alone or may be used in combination with other carbonation processes associated with concrete manufacture, such as carbonation of wet concrete mixes and/or carbonation of concrete wash water.

Carbonation of concrete aggregates

The invention provides methods and compositions for treating wash water from concrete production with carbon dioxide. The treated wash water can be reused as mix water in fresh batches of concrete.

Methods and compositions for treatment of concrete wash water

A method/system for sequestering carbon dioxide from cement and lime production facilities wherein carbon dioxide from flue gases originating from cement or lime production facilities is recovered and transported to a building materials production facility where it is sequestered.

Integrated carbon dioxide capture

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.

Apparatus for delivery of carbon dioxide to a concrete mix in a mixer and determining flow rate

Apparatus for delivery of a predetermined amount of solid and gaseous carbon dioxide

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.

Methods and compositions for concrete production

Fresh concrete is treated with carbon dioxide prior to delivery to a product mold for forming concrete products. Carbon dioxide gas is directed through a manifold, which may be coupled to a feedbox or a hopper, upstream from the product mold. Treating the fresh concrete with the carbon dioxide gas while it is in a loose state prior to placement in the product mold may generally promote uniform and enhanced carbon dioxide uptake.

Carbon dioxide treatment of concrete upstream from product mold

The invention provides methods and compositions for carbonation of cement mixes using pressurized carbon dioxide delivered to the mix.

Carbonation of cement mixes

The invention provides compositions and methods directed to carbonation of a cement mix during mixing. The carbonation may be controlled by one or more feedback mechanisms to adjust carbon dioxide delivery based on one or more characteristics of the mix or other aspects of the mixing operation.

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Montreal, Canada

George Sean Monkman