ABOUT THE COMPANY:
ConcreteNexus LLC is an international consulting firm specializing in education, certifications, building codes and standards advocacy, as well as business development services for the concrete industry. Our services include:​
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Codes and standards advocacy
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Develop and deliver education programs
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Certification services
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Grant writing
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Technical writing
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EPD verification
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Specification writing
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life cycle assessment
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Association management
ABOUT LIONEL LEMAY:
Lionel Lemay is CEO and founder of ConcreteNexus LLC. He is an accomplished leader in engineering and sustainability with a proven track record of building strong teams and programs that drive growth in the building products industry. Lemay is a passionate professional with expertise spanning engineering, education, certifications, business development, and research, all centered on advancing sustainability.
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Lemay founded ConcreteNexus LLC in 2025. We are a consulting firm specializing in educational and certification programs for the concrete industry, with a focus on green building and sustainability. Represents building product companies in building codes and standards.
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E-mail: Lionel.A.Lemay@gmail.com
Mobile: 847-922-7995


PROFESSIONAL EXPERIENCE
2025-Present: CONCRETENEXUS LLC
An international consulting firm specializing in education, certifications, building codes and standards advocacy, as well as business development services for the concrete industry.
CEO and Founder
Leads a consulting firm specializing in educational and certification programs for the concrete industry, with a focus on green building and sustainability. Represents building product companies in building codes and standards. Visit www.concretenexus.com.
2004-2025: NATIONAL READY MIXED CONCRETE ASSOCIATION
A national trade association representing $60 billion concrete industry
Executive Vice President, Structures and Sustainability
Responsible for developing and implementing strategic marketing plans to increase market share of concrete through communications, promotion, education and advocacy.
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Developed and successfully implemented the Build with Strength initiative, a $6 million per year marketing and promotion program to increase market share of concrete construction.
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Increased market share of concrete in building applications by 16% in 7 years.
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Led a team of 14 high-performing engineers, architects and sales professionals responsible for expanding and improving the use of concrete in building applications through education, research, communications and building code advocacy.
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Managed programs to assist concrete producers, contractors, and designers to improve the sustainability of concrete manufacturing and construction.
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Developed and managed programs to assist concrete producers implement sustainable manufacturing practices including Product Category Rules, Environmental Product Declarations and Responsible Sourcing Certifications.
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Successfully wrote grant proposals and selected for federal grants totaling $10 million.
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Produced technical publications and software tools to establish concrete as an economical and sustainable solution for building applications.
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Developed and delivered continuing education for engineers, architects and contractors on the proper design and use of concrete products.
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Initiated and managed www.ConcreteInnovations.com online platform to provide learning opportunities on the latest advances, knowledge, research and solutions for concrete.
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Played a key role in industry-wide coalitions with trade and professional associations, private businesses and government agencies to leverage resources and coordinate industry programs.
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Represented NRMCA at ACI, ASCE, USGBC, ASTM and other standards development organizations with the objective of implementing new concrete technologies at a faster pace.
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Authored articles in national trade publications on performance-based specifications for concrete and sustainable building practices.
1993–2003: PORTLAND CEMENT ASSOCIATION
A national trade association representing $15 billion cement industry
Managing Director, Market Promotion
Responsible for improving, expanding, and developing new markets for cement and concrete products in residential, commercial, and public construction.
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Led a team of 21 engineers, architects, and scientists to promote cement and concrete products through communications, education, and government affairs.
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Developed industry-wide marketing programs that increased market share of cement in residential, commercial, and public works construction.
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Built strategic relationships with government and private industry that generated over $7 million of cooperative product research and technology transfer. Strategic partners included the Department of Housing and Urban Development, Department of Energy, Federal Railroad Administration, and National Association of Home Builders.
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Implemented strategic marketing plan, which increased market share of concrete in residential walls and floors from 6% to 11%.
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Created national/local cooperative marketing program to promote concrete walls and floors, including advertising and media relations, which increased homeowner awareness from 52% to 68% and homebuilder awareness from 74% to 95%.
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Launched www.concretehomes.com and Concrete Homes magazine that increased awareness and improved perceptions of residential concrete products.
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Developed a successful proposal for a $500,000 cooperative research program with Department of Housing and Urban Development that resulted in new national building code provisions for residential concrete wall systems.
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Co-authored McGraw-Hill book titled Insulating Concrete Forms for Residential Design and Construction that provided design guidance for architects and engineers.
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Developed education programs for video and CD format and presented seminars that trained contractors across the United States.
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Developed computer software and publications that resulted in cost-effective design for tilt-up, precast, and cast-in-place concrete wall systems.
1986–1993: HANSEN LIND MEYER, INC.
A national 300-person architectural/engineering consulting firm specializing in major office, healthcare, criminal justice, education, and research facilities.
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Director, Engineering
Responsible for providing structural design services for an office of 100 architects and engineers.
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Managed 9-person engineering department that provided structural designs for commercial and institutional buildings from $5–$200 million.
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Interfaced with clients throughout proposal, design, and construction phases. Clients included Northwestern Memorial Hospital, Rush-Presbyterian-St. Luke’s Medical Center, Johns Hopkins University, University of Chicago, State of Illinois, and State of Florida.
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Developed and presented feasibility studies to building owners and developers that led to significant new business.
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Performed structural designs and developed construction documents for steel, concrete, wood, and masonry buildings.
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Used advanced computer software including GT Strudl, Etabs, RAMSteel, ADOSS, and AutoCAD to design and analyze new and existing structures.
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Redesigned and reinforced existing structures to meet new program and loading requirements, resulting in millions of dollars in construction cost savings.
EDUCATION
1986 – Present: Lifelong learning in business leadership and association management.
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Sandler Sales Training
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Loyola University Business Leadership Program
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Principles of Association Management
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Association Law
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Financial Management for Non-profit Organizations
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Fundraising for Non-Profit Organizations
1986: Master of Civil Engineering and Applied Mechanics, McGill University, Montreal, Quebec, Canada
1984: Bachelor of Civil Engineering and Applied Mechanics, McGill University, Montreal, Quebec, Canada
LICENSES AND CERTIFICATIONS
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Professional Engineer, Illinois (PE)
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Structural Engineer, Illinois (SE)
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LEED Accredited Professional (LEED AP)
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