Innovative Solutions for Adoption of Low Carbon Concrete in Codes - Matthew Adams.pdf

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1、INNOVATIVESOLUTIONS FORADOPTION OFLOWCARBONCONCRETE INCODESMatthew P.AdamsJ.A.Reif,Jr.,Department of Civil and Environmental EngineeringNew Jersey Institute of TechnologyACI Foundation Technology ForumSanta Fe,NMMay 15,2024WHAT ARE WE TALKING ABOUT TODAY?1.Background on Low Carbon Concrete 2.Policy

2、Review3.Policy Best Practices4.ACI 323 CODE5.Overcoming Barriers Innovation to MarketWHY DO WE NEED LOW CARBON CONCRETE?3Building materials and construction account for 11%of global CO2emissionsConcrete production is responsible for 7%of global CO2 emissionsMajority of emissions come from cement pro

3、duction and scale of useMust reduce anthropogenic carbon production to limit the continued impacts of climate changeWHAT IS EMBODIED CARBON?A measurement of the greenhouse gases that are released throughout the manufacture,transport,and installation of a product or materialTypically expressed as kg

4、of CO2eEquivalent CO2is a value that captures the normalized impacts of all greenhouse gasesAlso referred to as Global Warming Potential(GWP)4WHAT IS EMBODIED CARBON?5Source:OneClick LCAEPDsWHAT ISLOWCARBONCONCRETE?6Determine an embodied carbon benchmark(GWP)Determine a desired reductionDesign concr

5、ete to meet or exceed desired reductionHOW DO WE GET TO LOW CARBON CONCRETE?7Low carbon concrete is a design goal that requires creative solutions Many levers and knobs we can simultaneously use to reduce embodied carbonSubject to local availability and costRequire knowledgeable engineers,contractor

6、s,and laborRequires performance,not prescriptionBROADRANGE OFOPTIONSCement replacementsNovel cement formulationsAggregate solutionsAdmixture solutionsMixture design efficiencyScheduling/curing time improvementsRecycled/waste materials8CAN WE MAKE LOW-CARBON CONCRETE?To quote the sign on my mothers k