Concrete stands as the most widely used construction material on Earth, with global production exceeding 14 billion cubic meters annually. However, Portland cement production contributes approximately 8 percent of global anthropogenic carbon dioxide emissions through the calcination of limestone and combustion of fossil fuels to heat kilns to temperatures exceeding 1450 degrees Celsius. The construction sector faces mounting pressure to decarbonize from regulatory bodies, institutional investors, and corporate sustainability mandates. This comprehensive course introduces engineers and construction professionals to the specifications, technologies, and practical applications of low-carbon concrete.

By completing this course, you will gain practical insights into how low-carbon concrete can reduce embodied carbon by 30 to 70 percent compared to conventional concrete while maintaining structural performance. Industry consensus defines low-carbon concrete as mixtures achieving at least 30 percent reduction in embodied carbon compared to conventional reference mixes of equivalent strength class. The Carbon Leadership Forum's EC3 tool indicates typical conventional concrete benchmarks range from 250 to 400 kg CO2e per cubic meter for normal-strength mixtures, with leading specifications pushing below 200 kg CO2e per cubic meter.

This course bridges sustainability science with practical engineering application, examining supplementary cementitious materials including fly ash, slag cement, silica fume, and natural pozzolans; alternative cement technologies such as Portland Limestone Cement and blended cements; mixture design optimization strategies; and carbon capture and utilization technologies. Research indicates that well-implemented low-carbon concrete strategies can achieve SCM replacement rates of 50 to 70 percent in foundation applications, while CO2 mineralization technologies achieve 5 to 25 kg CO2e reductions per cubic meter. Whether you are a structural engineer, civil engineer, architect, or construction professional, this course will equip you with the knowledge needed to specify and implement low-carbon concrete solutions.

Target Audience

• Structural engineers and civil engineers
• Architects and specification writers
• Construction managers and contractors
• Concrete producers and materials suppliers
• Sustainability consultants and LEED professionals
• Quality assurance and testing laboratory personnel

Learning Objectives:

• Explain the environmental imperative for low-carbon concrete, including cement's contribution to global CO2 emissions, the carbon footprint mechanisms of Portland cement production, and the regulatory drivers for construction sector decarbonization.
• Define low-carbon concrete and describe the primary strategies for reducing embodied carbon including supplementary cementitious materials, alternative cements, mixture optimization, and carbon capture technologies.
• Describe the properties, applications, and supply considerations for supplementary cementitious materials including fly ash, slag cement, silica fume, and natural pozzolans including calcined clay.
• Explain the transition from prescriptive to performance-based concrete specifications and identify how embodied carbon limits can be incorporated into project specifications using Environmental Product Declarations.
• Compare alternative cement technologies including Portland Limestone Cement, blended cements, calcium sulfoaluminate cements, and alkali-activated materials, identifying their carbon reduction potential and application constraints.
• Describe mixture design optimization strategies including aggregate optimization, chemical admixture technologies, and strength specification optimization that enable cement reduction while maintaining performance.
• Explain carbon capture and utilization technologies for concrete including CO2 mineralization during mixing, carbonated aggregates, and point-source capture at cement plants.
• Identify practical applications of low-carbon concrete in building foundations, infrastructure projects, and precast/prestressed concrete, and analyze case study projects demonstrating successful implementation.
• Develop low-carbon concrete specifications addressing embodied carbon limits, acceptable materials, verification requirements, and quality assurance protocols for procurement and construction.
• Evaluate building rating system requirements for low-carbon concrete including LEED, Living Future, and government procurement policies, and identify emerging technologies and industry transformation pathways toward net-zero concrete.