CONCRETENEXUS WEBINAR SERIES
ConcreteNexus Webinar Series brings together leaders across the built environment to explore how concrete is evolving to meet today’s sustainability, performance, and resilience demands. Each session dives into practical strategies for reducing embodied carbon, improving durability, and advancing responsible sourcing through frameworks like LEED, Envision, and other emerging standards. From innovative mix designs to transparent environmental data and next‑generation specifications, ConcreteNexus connects producers, designers, owners, and policymakers in a shared conversation about the future of the built environment. Join us to discover how concrete can drive meaningful climate action while delivering high‑performing, long‑lasting, and equitable projects.
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Cements for Modern Concrete Construction
June 16, 1-2 pm Eastern
Presented by Eric Koehler, Ph.D, PE | Titan America
Hosted by Lionel Lemay, PE, SE, LEED AP | ConcreteNexus
The demands on concrete are increasing—from fast-track construction, ultra-flat flooring, and the need for more resilient and sustainable construction materials. This presentation describes Titan America’s TriForce Cement and how it addresses the needs of concrete producers, contractors, and specifiers. TriForce™ cement was developed in collaboration with concrete producers and contractors to address real-world challenges in concrete production and placement, including water demand, finishability, and long-term durability. By integrating multiple materials into a single engineered solution, TriForce cement delivers consistent, predictable performance while maintaining the flexibility to incorporate additional SCMs at the concrete plant.
Eric Koehler, Ph.D., P.E., will present this webinar. Koehler is the Vice President of Innovation at Titan America, a leading East Coast producer of low‑carbon cements, aggregates, and ready‑mixed concrete known for advancing sustainable, next‑generation construction materials. Eric holds his doctorate in civil engineering from the University of Texas at Austin and is a licensed Professional Engineer in Florida, Virginia, and Texas. His career spans influential roles in R&D, product development, and concrete technology, with a strong track record of pioneering innovations that elevate performance, quality, and sustainability in ready‑mixed concrete.
Closing the Loop: The Science Behind Carbonation and Circular Concrete
July 14, 1-2 pm Eastern
Presented by Karin Perissinotto, ENV SP, LEED AP BD + C , WELL AP | CalPortland
And Luis Baquerizo, Ph.D. | CalPortland
Hosted by Lionel Lemay, PE, SE, LEED AP | ConcreteNexus
Concrete naturally absorbs carbon dioxide (CO₂) from the atmosphere over its lifetime through a chemical process called carbonation, permanently converting the gas into solid calcium carbonate. As part of CalPortland’s ongoing commitment to sustainability, innovation, and lower-carbon construction materials, this presentation will explore the science behind carbonation, CO₂ reabsorption, and emerging approaches advancing circular concrete systems and material recovery.
Karin Perissinotto, Sustainability Manager at CalPortland, brings over 25 years of experience advancing low‑carbon strategies and industry best practices. She is joined by Dr. Luis Baquerizo, Director of CalPortland’s central research laboratory, who has an extensive background in cement chemistry and product innovation across leading research institutions and industry roles. Together, they will connect sustainability leadership with practical applications of materials science as they explore the carbonation process and emerging pathways for circular concrete systems.
Concrete's Contribution to LEED v5 (On-demand)
Originally aired March 17, 1-2 pm Eastern
Presented by Lionel Lemay, PE, SE, LEED AP
Discover how concrete plays a pivotal role in achieving the ambitious goals of LEED v5. This webinar breaks down the new rating system’s heightened focus on decarbonization, resilience, equity, and responsible resource use—and shows how innovative concrete products, EPD-driven transparency, and responsible sourcing strategies can help project teams earn key credits. Attendees will gain practical insights into low‑carbon mix design pathways, procurement expectations, and documentation requirements that position concrete as a high‑impact solution for LEED v5 certification. Join us to understand what’s changing, why it matters, and how producers and designers can stay ahead.
Concrete's Contribution to Envision Certification (On-Demand)
Originally aired April 14, 1-2 pm Eastern
Presented by Lionel Lemay, PE, SE, LEED AP
This webinar explores how concrete plays a pivotal role in achieving Envision certification for sustainable infrastructure. Participants will learn how responsibly sourced materials, optimized mix designs, and transparent environmental data—such as EPDs—support key Envision credit categories, from reducing embodied carbon to enhancing resilience and long‑term performance. We’ll break down practical strategies for project teams, highlight real‑world applications, and show how concrete producers can align with Envision’s goals to deliver measurable social, environmental, and economic benefits. Join us to understand concrete’s unique potential to elevate infrastructure sustainability and drive meaningful project outcomes.
Use of Mineral Fines to Reduce Carbon Emissions, Decrease Production Cost, and Improve Durability (On-Demand)
Originally aired May 19, 1-2 pm Eastern
Presented by John Guynn | Roman Cement
Hosted by Lionel Lemay, PE, SE, LEED AP | ConcreteNexus
This webinar explores how precisely graded mineral fines can transform concrete performance while lowering both environmental impact and operational costs. By improving particle packing and increasing mix density, producers can significantly reduce cement content while improving strength, durability, or workability, often saving $5 to $20 per cubic yard while meaningfully shrinking their carbon footprint. View the webinar to learn how this practical, field‑proven approach delivers stronger, more sustainable concrete and measurable bottom‑line benefits.
THE FUTURE OF CONCRETE WEBINAR SERIES
Sponsored by Climate Earth and hosted by Lionel Lemay of ConcreteNexus, The Future of Concrete explores how the industry is rapidly evolving to meet new expectations for sustainability, performance, and transparency. Each monthly session features practical, real‑world conversations with producers, designers, owners, and policymakers who are shaping the next generation of low‑carbon, high‑performing concrete. From EPD‑driven specifications and responsible sourcing to LEED, Envision, and emerging policy trends, the series highlights what’s changing in the market—and what it means for competitive, resilient project delivery. Join us to stay ahead of the curve and understand where concrete is headed next.
From Carbon Targets to Concrete Decisions
June 10, 2026
2 PM Eastern | 11 am Pacific
Online
Embodied carbon targets are increasingly shaping how projects are designed and built, but translating those high-level goals into material-level decisions remains a challenge.
This session explores how owner-driven sustainability requirements connect with the realities of concrete production and EPD data in practice.
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How embodied carbon targets are set and applied at the project and portfolio level
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What EPDs can (and can’t) tell you when specifying and sourcing concrete
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Where gaps exist between owner expectations and supplier capabilities and how to close them
Lionel Lemay will be joined by Sara Neff from Microsoft and Matthew Lemay from Climate Earth. We look forward to seeing you there!
The Performance Question — Making Low-Carbon Mixes That STILL Perform
July 8, 2026
2 PM Eastern | 11 am Pacific
Online
Join host Lionel Lemay, Founder and CEO of ConcreteNexus along with an expert panel as they explore perforance cretieria such as early strength, durability, finishability & cracking concerns while staying compliant with ACI performance standards and low carbon targets for concrete. They will present why some low-carbon mixes fail — and how to avoid the risks.
Mix Optimization Deep Dive — Tarantula Curve, SCM Strategies & Quantifying Carbon Reductions
August 12, 2026
2 PM Eastern | 11 am Pacific
Online
Join host Lionel Lemay, Founder and CEO of ConcreteNexus with his special guest as they explore practical ways to optimize cement using aggregate gradation along with SCM strategies when fly ash and slag supply is limited and quantifying mix carbon savings with real numbers.
Innovations in Low-Carbon Concrete — CCUS, LC3, Recycled Aggs, Geopolymers & Novel SCMs
September 9, 2026
2 PM Eastern | 11 am Pacific
Online
Join host Lionel Lemay, Founder and CEO of ConcreteNexus along with an expert panel as they explore innovative concrete technolofies and what’s real today vs. what’s still experimental. They will discuss how these innovations impact baselines and specifications and will explore adoption timelines for producers (1-year, 3-year, 5-year).
Communicating Sustainability Without Losing the Room — Messaging for Producers
October 14, 2026
2 PM Eastern | 11 am Pacific
Online
Join host Lionel Lemay, Founder and CEO of ConcreteNexus along with an expert panel as they explore how to explain low-carbon concrete to architects, engineers and contractors. They will discuss how to address the common myths (“concrete isn’t sustainable,” “it cracks,” “too expensive”) along with storylines that win over skeptical stakeholders.
Concrete Sustainability Excellence
November 11, 2026
2 PM Eastern | 11 am Pacific
Online
Join host Lionel Lemay, Founder and CEO of ConcreteNexus along with an expert panel as they explore how leaders across the value chain—aggregates, construction, and design—are setting the standard for low-carbon concrete in real projects. They will present practical strategies each stakeholder uses to drive embodied-carbon reductions without compromising performance, schedule, or cost. They will discuss what “excellence” looks like in 2026: the materials, specifications, and coordination practices that consistently deliver low-GWP outcomes.
Designing With Low-Carbon Concrete — What Architects & Engineers Need to Know for 2027
December 9, 2026
2 PM Eastern | 11 am Pacific
Online
Join host Lionel Lemay, Founder and CEO of ConcreteNexus along with an expert panel as they explore how designers can confidently specify low-carbon concrete using clear performance data, EPDs, and realistic GWP targets. They will present what producers are actually able to deliver in 2026: mix performance, SCM availability, ACI compliance, and carbon reduction pathways. They will discuss how architects, engineers, and producers can align early in design to meet LEED v5, Buy Clean, CALGreen, and owner-driven carbon goals without adding project risk.
EVENTS
Building Resilience
PNWER Summit 2026
July 19-23, 2026 | JW Marriott, Edmonton, Alberta
The Pacific Northwest is experiencing a rapid rise in costly natural and man‑made disasters, placing growing economic pressure on communities. Beyond physical damage, these events disrupt supply chains, drive insurance premiums higher, interrupt business operations, and increase taxpayer‑funded recovery efforts. This escalating impact highlights the urgent need to strengthen regional resilience. The Working Group is launching a multi‑year effort to improve risk assessment, reduce vulnerabilities, and develop financial strategies that protect homes, infrastructure, and economies. Legislators and business leaders from all PNWER jurisdictions will collaborate to advance policies and programs that enhance resilience and safeguard lives, property, and long‑term regional stability. Representative Brandy Donaghy, Washington State and Lionel Lemay, Chair of Pacific Northwest Building Resilience (PNBRC) will Co-chair this resilience panel scheduled for 1:45 pm - 3:45 pm mountain time. In-person and virtual options are available. PNBRC is also a sponsor and exhibitor at the Summit.
Advancing Net Zero Goals Through Responsible Sourcing of Concrete
Net Zero Conference 2026
October 8, 2026 | Los Angeles Convention Center
Concrete’s global scale makes it essential to any credible net zero strategy. Responsible sourcing provides a practical, verifiable pathway to reduce the material’s carbon footprint while improving transparency and performance across the supply chain. Certification frameworks such as the Concrete Sustainability Council (CSC) help project teams evaluate environmental stewardship, ethical practices, and continuous improvement from raw materials through ready mix production. By prioritizing lower carbon cement blends, optimized mix designs, renewable energy, efficient quarry operations, and circular practices like recycled aggregates, responsible sourcing directly reduces embodied carbon. It also supports compliance with LEED v5 and emerging owner requirements for low carbon procurement. This session, presented by Lionel Lemay of Concrete Sustainability Council and Lawson Sanford of Climate Earth, will show how responsible sourcing accelerates market transformation and enables concrete to meaningfully contribute to global net zero commitments.
