2007 Honorary Members

Mario Collepardi

Mario Collepardi is President of Engineering Concrete (ENCO), Ponzano Veneto, Italy, a research and consulting company focusing on building construction. From 1967 to 2004, he was a Full Professor of civil engineering faculties in Italy, including Cagliari, Ancona, Venice, Rome, and Milan.

During the period from 1970 to 1972, he developed a mathematical model based on Fick's Second Law to predict chloride penetration into concrete structures. He is the author or co-author of more than 350 papers or books, including The New Concrete recently published in October 2006.

An ACI member since 1994, he received an ACI/CANMET award in 1989 for his "outstanding contributions to the fundamental knowledge of superplasticizers, and their use in concrete." In 1997, ACI and CANMET honored him in Rome, Italy, with the publication, Mario Collepardi Symposium on Advances in Concrete Science and Technology, edited by P. K. Mehta. In addition, he serves on the Advisory Board of Cement and Concrete Research and Cement and Concrete Composites.

His research interests include cement hydration, superplasticizers and other chemical admixtures, and the durability of reinforced concrete structures.

He received an MS in industrial chemistry from the University of Rome, Rome, Italy, in 1962.

Bernard Erlin

Bernard Erlin is President of The Erlin Company, Latrobe, PA. He began his professional career as a petrographer in the concrete industry in 1956 at the Research and Development Laboratories, Portland Cement Association. Following that, he and William Hime founded Erlin Hime Associates, which later became the Erlin Hime Associates Division of Wiss, Janney, Elstner Associates, Inc., where he was a Principal, and later became President and CEO of Testwell Craig Associates.

An ACI member for almost 40 years, Erlin is Past Chair of ACI Committee 116, Terminology and Notation; is a member of ACI Committees 201, Durability of Concrete; and was a member of ACI Committees 222, Corrosion of Metals in Concrete, and 362, Parking Structures. In addition, he organized, chaired, or co-chaired a number of ACI sessions, and has authored or co-authored over 100 papers dealing with petrographic examinations and other aspects of construction materials. He is a Co-Editor of several books that are compilations of papers from ACI and ASTM International sessions. In 2003, he received the ACI Pittsburgh Chapter Tink Bryan Award for exemplary contributions to the industry.

Erlin received his BS from the University of Wisconsin, Madison, WI, in 1956. He is a registered geologist in the states of California, Georgia, and Pennsylvania.

Howard R. May

Howard R. May retired in mid-1999 after more than 40 years of structural engineering work. Between 1951 and 1955, he worked for the Alaska Road Commission for 2 years and served in the U.S. Army for 2 years. From 1956 to 1957, he worked a year as a Research Engineer at the University of California-Berkeley, Berkeley, CA. He then joined the firm of T.Y. Lin and Associates in Los Angeles, CA; in 1960, he set up a branch office in Chicago, IL, and continued to manage that office under three other firms (Conrad Associates, Conrad Associates East, and Desman Associates) until 4 years before his retirement. Most of his engineering work was related to prestressed concrete and the design of parking structures.

An ACI member for more than 45 years, he is Past Chair and a member of ACI Committee 362, Parking Structures. He is also Past Chair of the ACI Financial Advisory Committee and Joint ACI-TMS Committee 216, Fire Resistance and Fire Protection of Structures. He served on the ACI Board of Direction, the ACI Convention Committee, the ACI Strategic Plan Oversight Committee, and the task group on International Strategies. He was a co-recipient of the ACI Construction Practice Award in 1967 and received the ACI Henry L. Kennedy Award in 2001.

May received his BS and MS in engineering from the University of California in 1951 and 1956, respectively.

Jan Moksnes

Jan Moksnes has been an independent Consulting Engineer in Stavanger, Norway, since 1998. His recent assignments include work on large marine concrete structures in Spain, Russia, Monaco, and the Gulf of Mexico. 

Moksnes was Chairman of an International Technical Panel on the Rion-Antirion Cable Stay Bridge in Greece from 1999 to 2006. From 1996 to 1998, he was President of Aker Maritime Inc., Houston, TX. Prior to that, he worked for more than 20 years for Norwegian Contractors in Norway, where he served in different capacities and was President from 1992 to 1996, and was involved in the delivery of some 20 large concrete offshore structures to the petroleum industry in Norway, Canada, and the UK. From 1964 to 1968, he lectured on engineering materials at the Newcastle University in Newcastle upon Tyne, England.

He is a Fellow of the Institution of Structural Engineers and of the Royal Academy of Engineering in London. He has been a board and committee member of the Norwegian Concrete Association, Oslo, Norway, for many years and was President from 1987 to 1989. He has also been a member of the International Federation for Structural Concrete (FIP, now fib) and served as President from 1992 to 1996. He has served on the committees of several international conferences on high-performance concrete and has published more than 50 papers.

In 1998, he received the Freyssinet Medal from FIP for outstanding contributions in the field of structural concrete. In 2005, he received the Albert Caquot Medal from the French Association of Civil Engineers (AFGC) in recognition of his contributions to civil engineering construction.

His research interests include offshore concrete structures and bridges, as well as the education, research, and work of voluntary professional organizations.

He received his BSc in civil engineering from Newcastle University in Newcastle upon Tyne, England, in 1960.

Shigeyoshi Nagataki


Shigeyoshi Nagataki is a Professor in the Department of Urban Environment, Aichi Institute of Technology, and Professor Emeritus, Tokyo Institute of Technology, Japan. He has taught and conducted research in concrete technology and reinforced concrete engineering at universities for over 40 years.


An ACI member since 1963, he has attended ACI programs, such as ACI conventions and ACI/CANMET symposia, more than 35 times and contributed approximately 50 technical papers. He received ACI/CANMET Awards for outstanding contributions in the area of mineral and chemical admixtures in 1992 and 1998, respectively. He became a JSCE Honorary Member in 2006 and received the Medal with Purple Ribbon from the Japanese government in 2002; the JSCE Distinguished Paper Award in 1991 and 1998; the JSCE Yoshida Prize in 1973, 1987, 1989, and 2002; and the JCA Distinguished Paper Award in 1984.

He was President of the Japan Concrete Institute (JCI) from 2004 to 2006 and the Japan Society of Dam Engineering (JSDE) from 2002 to 2003, and was Vice President of the Japan Society of Civil Engineering (JSCE) from 1995 to 1996 and the Japan Society of Materials Science (JSMS) from 1994 to 1996. He has served as a member and Chairman of numerous committees in JCI, JSDE, JSCE, JSMS, the Japan Cement Association, the Japan Ready Mixed Concrete Association, the Japan Society for the Promotion of Science, and the Japanese Industrial Standard Association.

He received his BS, MS, and Dr. of Eng. in civil engineering from the University of Tokyo, Tokyo, Japan.