2026 Honorary Members
David A. Lange
“for exemplary teaching and research in the field of concrete materials, invaluable student mentoring, and passionate service to ACI”
David A. Lange, FACI, is a Professor Emeritus of civil and environmental engineering at the University of Illinois Urbana-Champaign, Urbana, IL, USA. He joined the Department of Civil and Environmental Engineering faculty in 1992 and served as Associate Department Head from 2004 to 2010. He served as Director of the Center of Excellence for Airport Technology for 15 years, developing an effective partnership with the Chicago Department of Aviation and Chicago O’Hare International Airport.
A longtime ACI member, Lange served as ACI President from 2018 to 2019. He also previously served as Chair of the ACI Technical Activities Committee, the ACI Executive Committee, the ACI Board of Direction, the ACI Publications Committee, and the ACI Board Outlook 2030 Task Group. He is currently a member of ACI Committees 209, Creep and Shrinkage in Concrete; 236, Material Science of Concrete; 237, Self-Consolidating Concrete; 241, Nanotechnology of Concrete; 544, Fiber Reinforced Concrete; 549, Thin Reinforced Cementitious Products and Ferrocement; and ACI Subcommittee 53-A, ACI Concrete International Award Committee. He is also a Fellow of The American Ceramic Society. He received a J. William Fulbright Scholar Award in 2013 and the ACI Wason Medal for Most Meritorious Paper in 2003, 2018, and 2020.
Lange received his BSCE from Valparaiso University, Valparaiso, IN, USA, in 1981; his MBA from Wichita State University, Wichita, KS, USA, in 1984; and his PhD from Northwestern University, Evanston, IL, in 1991.
Fred Goodwin
“for lifelong leadership and creativity in the research, development, and use of materials related to new concrete construction and repair”
Fred Goodwin, FACI, is a retired chemist with more than 40 years of experience in the construction chemicals industry, including cement manufacture, research, development, and technical support of grouts, adhesives, coatings, shotcrete, stucco, flooring, and concrete repair materials. He worked with BASF and its predecessors for 31 years. He served as Head of the Global Corrosion Competency Center for BASF Construction Chemicals prior to retirement.
He is past Chair of ACI Committees 364, Rehabilitation, and 515, Protective Systems for Concrete, and the ACI Technical Activities Committee (TAC) Repair and Rehabilitation Subcommittee; and a member of ACI Committees E706, Concrete Repair Education; 222, Corrosion of Metals in Concrete; 321, Concrete Durability Code; 351, Foundations for Equipment and Machinery; 364, Rehabilitation; 515, Protective Systems for Concrete; and 546, Repair; and ACI Task Group 321-TG5, Maintenance.
Goodwin is an Honorary Member of ASTM International Committees C01, Cement, and C09, Concrete and Concrete Aggregates. He is past Chair of the International Concrete Repair Institute (ICRI) Technical Activities Committee (TAC); ICRI Committee 320, Concrete Repair Materials and Methods; ASTM International Subcommittees C09.41, Hydraulic Cement Grouts, and C09.68, Volume Change; and the Society for Protective Coatings (SSPC; now known as the Association for Materials Protection and Performance [AMPP]) Committee C.8.3, Commercial Floor Coatings. He has served as a member of ICRI Committee 150, Notes on ACI 562 Code Requirements; the U.S. Bureau of Reclamation (USBR) M-82 Corrosion Protocol expert team; and the ICRI Strategic Implementation Committee. He is also a Fellow of ASTM International and ICRI.
He was awarded the ICRI President’s Award in 2020; the Journal of Protective Coatings and Linings (JPCL) Editors Award in 2006, 2010, and 2012; the ACI Delmar L. Bloem Distinguished Service Award in 2011; the ACI Foundation Concrete Innovation Council (CIC) Jean-Claude Roumain Innovation in Concrete Award in 2015; the Degussa President’s Award in 2003 and 2005; the Master Builders Solutions Industry Recognition Award in 2013; and the Award of Appreciation from ASTM International Committee C09 in 2016.
He was an AMPP (formerly NACE International)-certified Corrosion Technologist, the inventor of six patents, and was named as a Top 25 Innovative Thinker by Technology Publishing.
Frances Griffith
“for exemplary and impactful contributions to the education and certification missions of ACI at both the national and regional levels”
Frances Griffith, FACI, is retired from her position as Associate Director of the Center for Training Transportation Professionals in the Department of Civil Engineering, University of Arkansas, Fayetteville, AR, USA. She had served the Center for over 20 years.
As a student, Griffith received the ACI Foundation Peter D. Courtois Concrete Construction Scholarship and was named Student of the Year by the Mack-Blackwell Transportation Center at the University of Arkansas.
She joined the Institute in 2005 and became an ACI Fellow in 2014. She is past Chair of the ACI Educational Activities Committee (2014 to 2018) and the ACI Certification Programs Committee (2020 to 2022), and a past member of the ACI Board of Direction. She is also Past President and a past Board member of the ACI Arkansas Chapter.
She received the ACI Henry L. Kennedy Award in 2020, the ACI Strategic Advancement Award in 2017, and the ACI Certification Award in 2014. She received her BS and MS in civil engineering from the University of Arkansas in 1998 and 2010, respectively.
Ari De Paula Machado
“for outstanding contributions in advancing the use of carbon fiber-reinforced polymer in concrete repair and rehabilitation”
Max Porter was inducted as an Iowa State University (ISU) CCEE Distinguished Alumni in 2022 for “International impact in structural engineering, notable contributions to education, research, professional societies. ”
Ari De Paula Machado, FACI, has served as Technical Director for over 50 years at Paula Machado Engenharia e Projetos, headquartered in Belo Horizonte, Minas Gerais, Brazil. A specialized firm for structural engineering projects, De Paula Machado founded the company in 1973. He graduated as a civil engineer in 1968 from the Federal University of Minas Gerais School of Engineering, Belo Horizonte.
From 1973 to his retirement in 2010, he taught reinforced and prestressed concrete, strength of the materials, and reinforced and prestressed concrete bridges at the Federal University of Minas Gerais School of Engineering. From 1998 through 2007, he served as Technical Consultant and Lecturer for BASF Corporation, focusing on fiber-reinforced polymer projects in South and Central America (including Brazil, Mexico, Puerto Rico, and the Caribbean). He has supported revealing composite systems technology in more than a dozen countries, and as a professor and engineer, he has devoted considerable time to the research and development of reinforced and prestressed concrete and fiber-reinforced polymer techniques and applications.
De Paula Machado became an ACI member in 1999 and a Fellow in 2015. He is currently a member of ACI Committee 440, Fiber-Reinforced Polymer Reinforcement.
He has developed software and published several technical books and papers relating to those subjects. The International Concrete Repair Institute (ICRI) honored him with “Honorable Mention” (2003) and “Award of Merit” (2005) for fiber-reinforced polymer structural reinforcement projects. He was also recognized as the “Independent Engineer” (2011) and “Independent Company for Big and Challenging Structural Projects” (2013) from the Minas Gerais Civil Engineering Institute.
H. Celik Ozyildirim
“for an outstanding and lifelong dedication to advancing the durability and sustainability of concrete in transportation-related structures”
H. Celik Ozyildirim, FACI, is a Principal Research Scientist at the Virginia Transportation Research Council (VTRC), the research division of the Virginia Department of Transportation (VDOT), in Charlottesville, VA, USA. He previously served as an instructor of civil engineering at the University of Virginia, Charlottesville, VA.
He is past Chair and a current member of ACI Committee 309, Consolidation of Concrete, and a member of ACI Committees 211, Proportioning Concrete Mixtures; 233, Ground Slag in Concrete; 234, Silica Fume in Concrete; 236, Material Science of Concrete; 237, Self-Consolidating Concrete; 238, Workability of Fresh Concrete; 241, Nanotechnology of Concrete; 308, Curing Concrete; 327, Roller-Compacted Concrete Pavements; 329, Performance Criteria for Ready Mixed Concrete; 506, Shotcreting; and 544, Fiber Reinforced Concrete. He is also past Chair of the Transportation Research Board (TRB) Section on Concrete and is a member emeritus of TRB. He is a member of ASTM International Committee C09, Concrete and Concrete Aggregates.
He co-authored ACI SP-1(02), Concrete Primer, with Bryant Mather, and co-edited ACI SP-223, Investigating Concrete: Selected Works of Bryant and Katharine Mather, in 2004. In addition, he delivered the Katharine and Bryant Mather Commemorative Lecture as part of the ACI Commemorative Lecture Series in 2010. He has published nearly 200 papers through various professional organizations, including ACI, covering a wide range of concrete topics, with an emphasis on durability and sustainability.
He received the VDOT Commissioner’s Award for Excellence in 1998; the Expanded Shale, Clay and Slate Institute Frank G. Erskine Award in 2009; the ACI Foundation Concrete Research Council Robert E. Philleo Award in 2010; the Cedric Willson Lightweight Aggregate Concrete Award in 2014; and the VDOT Commissioner’s Lifetime Achievement Award in 2023. He was an ACI Ambassador Speaker in Singapore (2017) and Thailand (2018).
Ozyildirim received his BS and MS in civil engineering from Robert College (now Boğaziçi University), Istanbul, Turkey, and his PhD in civil engineering from the University of Virginia in 1974. He is a licensed professional engineer in the state of Virginia.