Kapolei Interchange Demonstration - Honolulu, HI

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Project Details

Owner: Hawaii Department of Transportation
Project Size: 150 cubic yards
Completion: April 2019
Concrete Supplier: Island Ready-Mix Concrete
General Contractor: Goodfellow Bros.
Total CO₂ Saved: 1,500 pounds


Hawaii DOT Tests Sustainable Concrete Mix

On May 16, 2019, the Hawaii Department of Transportation (HDOT) announced in a press release that the department would be demonstrating the use of concrete made with the CarbonCure Technology as a sustainable transportation initiative. The initial test involved a pour of 150 cubic yards of carbon-injected concrete next to an equivalent pour of standard concrete mix on an access road for the Kapolei Interchange Phase 2 on Oahu Island. The carbon-injected concrete used in the testing was produced by Island Ready-Mix Concrete using waste carbon dioxide captured from Hawaii Gas, and distributed by Matheson Gas.

The demonstration project comes on the heels of an adopted resolution by Honolulu City Council that “requests the city administration to consider using carbon dioxide mineralization concrete for all future city infrastructure projects utilizing concrete.” The State of Hawaii also tabled legislation—currently pending—that “requires all state building construction that uses concrete to use post-industrial carbon dioxide mineralized concrete.”


Local News Coverage

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“I am pleased to see HDOT moving ahead with CarbonCure, local concrete companies, and Hawaii Gas to reduce the levels of carbon dioxide emitted during the construction process.”

-David Ige
Governor of the State of Hawaii

Project Photos