Carboncure Technologies, Inc.

The Euclid Chemical Company

Polysteel Atlantis Limited

Dean Paul Forgeron

George Sean Monkman

Joshua Jeremy Brown

Paul J Sandberg

Kevin Cail

Mark MacDonald

Robert Niven

Mark Macdonald

Shannon Marie O'Connell

Shannon McNair

Jay Crossman

Alex Hanmore

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

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

A fiber is disclosed having a central axis or spline and a major outer surface, the fiber made of a base material and poly(vinylidene fluoride), the proportion of base material to poly(vinylidene fluoride) being greater towards the central axis or spline of the fiber than at the major outer surface of the fiber. The base material may be selected from the group consisting of polyethylene, polypropylene and nylon. The fiber has a surface roughness.

Filaments and fibers and method for making filaments and fibers

A method for making a fiber reinforcement with variations in transverse cross section is disclosed. The method includes forming a fiber comprising polymeric material and exposing the fiber to a heat treatment, such that at least a portion of the polymeric material at or near said surface of said fiber is at or above the melting point temperature and substantially all of the polymeric material at or near the core is below the melting point temperature. The method further includes cooling the fiber to a temperature below the melting point temperature.

Fibers with modified cross sectional profile

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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White's Lake, Canada

Dean Paul Forgeron