CarbonCast

From Wikipedia, the free encyclopedia
Jump to: navigation, search

CarbonCast is a precast concrete technology that uses carbon-fibre grid as secondary reinforcing or as a shear truss. It was introduced by AltusGroup, Inc., a North American partnership of 17 precast concrete manufacturers and seven industry suppliers founded to expedite the research and national commercialization of concrete innovations.

Products[edit]

The CarbonCast line of commercial products includes:

  • CarbonCast High Performance Insulated Wall Panels are composed of two concrete wythes separated by continuous insulation and connected by C-GRID carbon fibre shear trusses[1][2]
  • CarbonCast Insulated Architectural Cladding feature inner and outer wythes 1-3⁄4″thick or more for a total concrete thickness of 3-1⁄2″. The wythes sandwich a layer of insulation of usually 2″ or more depending on R-value requirements[3]
  • CarbonCast Architectural Cladding employs a steel reinforced Vierendeel-like truss frame attached to a thin, C-GRID reinforced diaphragm face. Insulating foam forms around patented V-ribs, designed to create a thermal break with the face of the panel, and displaces concrete to provide insulation while C-GRID carbon fibre shear trusses mechanically link the face and truss ribs[4][5]
  • CarbonCast Double Tees replace conventional steel mesh reinforcing in the flange with C-GRID carbon fibre grid[6]

Properties[edit]

The use of carbon fibre grid over conventional reinforcement yields a number of unique properties to CarbonCast components:[7]

  • Lower weight - When carbon fibre grid replaces steel mesh in the face of concrete products, manufacturers can use less concrete cover to protect the mesh from corrosive elements. Non-corrosive carbon fibre eliminates the need for extra concrete.
  • Improved thermal performance - The relatively low thermal conductivity of carbon fibre permits CarbonCast components to provide higher R-values than conventional precast concrete.
  • Improved strength - Carbon fibre is four times stronger than steel by weight providing better surface crack control when used as secondary reinforcing and 100% composite action when used as a truss in insulated wall panels.
  • Comparable cost - Many applications receive savings in foundation and superstructure (reduced weight), energy costs (insulation) and maintenance (reduced corrosion).

Applications[edit]

There are more than 700 projects totaling more than 30,000,000 square feet (2,800,000 m2) of surface area of CarbonCast technology in these markets:

  • Education
  • Industrial / Warehouse
  • Commercial Office
  • Parking Structure
  • Multi-Family Residential
  • Retail

Examples[edit]

Prominent structures that have used CarbonCast technology include:

See also[edit]

References[edit]

  1. ^ Insulated Wall Panels, retrieved 2010-06-09
  2. ^ New Carbon Fibre Reinforcement Advances Sandwich Wall Panels Archived December 1, 2010, at the Wayback Machine., retrieved 2010-06-10
  3. ^ CarbonCast by AltusGroup retrieved 2010-06-10
  4. ^ Building a better sandwich retrieved 2010-06-10
  5. ^ Cladding Archived July 10, 2011, at the Wayback Machine. retrieved 2010-06-10
  6. ^ Jet Fighters and Golf Clubs: Similar to Parking Garages?, retrieved 2010-06-10
  7. ^ Precast Concrete Technology Reduces Weight, Improves Insulation, retrieved 2010-06-19

External links[edit]