2024 Award Winners and Nominees
Project Name
Gig Harbor Habitat for Humanity
Description
Nomination for Joe Sheehy: Pioneering Sustainable Excellence in Concrete Construction
Introduction:
I am delighted to nominate Joe Sheehy, the Pacific Northwest Area Manager of Concrete at Heidelberg Materials, for the 2024 Concrete Innovations Awards. His exemplary leadership in the Gig Harbor Habitat for Humanity project, specifically in incorporating the BioLock admixture from Solid Carbon, has showcased innovative concrete solutions that significantly reduce environmental impact.
Background:
Joe Sheehy's career at Heidelberg Materials has been marked by a commitment to excellence in concrete construction. His dedication to performance and sustainability has positioned him as a leader in the industry, and the Gig Harbor Habitat for Humanity project stands as a testament to his visionary approach.
The Gig Harbor Habitat for Humanity Project:
Under Joe Sheehy's leadership, the Gig Harbor Habitat for Humanity project exemplifies a paradigm shift in concrete construction. It focused on building sustainable, energy-efficient homes with a reduced environmental footprint, achieved through innovative concrete solutions.
Innovative Concrete Solutions:
The project incorporated BioLock admixture from Solid Carbon to sequester carbon in the 100 cubic yard pour, setting a new standard for carbon reduction in concrete construction. Clark Construction was the General Contractor.
Foundations:
The industry average for 3,000 PSI concrete with 0-19% Fly Ash is 345 kg CO2eq per cubic yard. Joe's team achieved a remarkable 68% reduction, creating foundations with only 110 kg CO2eq per cubic yard.
Interior Slab on Grade:
With the industry average at 271 kg CO2eq per cubic yard, Joe's team achieved a notable 64% reduction, producing the slab on grade with only 97 kg CO2eq per cubic yard.
ICF Walls:
The industry average is 243 kg CO2eq per cubic yard, but Joe's team surpassed expectations with a 69% reduction, creating ICF walls with only 76 kg CO2eq per cubic yard. ICF forms were provided by Quadlock.
Environmental Product Declarations (EPDs):
The EPDs for these innovative concrete mixtures were calculated using Heidelberg Materials' advanced software from Climate Earth, certified by ASTM International. These stand as some of the lowest commercial concrete EPDs ever published in the North American market.
Conclusion:
Joe Sheehy's leadership on the Gig Harbor Habitat for Humanity project exemplifies the spirit of the NRMCA Concrete Innovations Awards.
Evidence
BioLock Admixture Integration:
Joe led the integration of the BioLock admixture from Solid Carbon in the Gig Harbor project, providing tangible evidence of his commitment to lowering the environmental impact of concrete construction. This innovative solution sequesters carbon in the concrete, contributing to both embodied and operational carbon footprint reduction. To accomplish this Joe and his technical team developed design mixtures with and without Solid Carbon BioLock Admixture.
Carbon Reduction Metrics Versus Strength Development:
The project utilized three distinct concrete mixtures, achieving unprecedented carbon reductions while strength testing the the Heidelberg lab showed excellent strength development of these mixes:
Foundations: Reduced CO2eq per cubic yard by 68% to 110 kg. While obtaining 99.7% of seven day strength compared to the control without BioLock Admixture.
Interior Slab on Grade: Achieved a 64% reduction to 97 kg CO2eq per cubic yard. While obtaining 102% of seven day strength compared to the control without BioLock Admixture.
ICF Walls: Surpassed expectations with a 69% reduction to 76 kg CO2eq per cubic yard. While obtaining 86.5% of seven day strength compared to the control without BioLock Admixture.
These metrics, certified by ASTM International, demonstrate Joe's success in pushing industry boundaries and achieving remarkable carbon reductions.
Environmental Product Declarations (EPDs):
Heidelberg Materials used advanced software from Climate Earth to generate EPDs for the project, independently verified and certified by ASTM International. The EPDs stand as some of the lowest commercial concrete EPDs ever published in North America, attesting to the project's sustainability achievements.
NRMCA Member Company Involvement:
Heidelberg Materials, an NRMCA member company, played a pivotal role in the success of Joe Sheehy's initiatives. As a concrete supplier (producer member), Heidelberg Materials actively participated in the development and implementation of the innovative concrete mixtures, contributing to the project's overall success.
Conclusion:
In summary, Joe Sheehy's nomination is supported by concrete evidence of his innovative contributions to the Gig Harbor Habitat for Humanity project. From pioneering the integration of BioLock admixture to achieving industry-leading carbon reductions and obtaining industry level EPDs,
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