The University of Florida honors the remarkable life and enduring influence of Professor Emeritus Sidney Diamond, who passed away in West Lafayette on October 25, 2025, at the age of 95.
Born on November 10, 1929, in New York City, Sidney was the son of Julius and Ethel Diamond and a proud graduate of The Bronx High School of Science. His academic path reflected a lifelong dedication to learning: a bachelor’s degree from the New York State College of Forestry at Syracuse University (1950), a master’s from Duke University (1951), and ultimately a Ph.D. from Purdue University (1963).
Early in his career, Sidney served as a Highway Research Chemist for the federal agency that would later become the Federal Highway Administration. In 1965, he joined the Purdue University School of Civil Engineering, where he quickly distinguished himself as a dedicated educator and world-renowned researcher. He was promoted to full professor in 1968 and honored with emeritus status in 2002.
Professor Diamond was internationally recognized as a leading expert in cement and concrete chemistry. Over several decades, he published more than 200 influential research papers, contributed to major technical journals as an editorial board member, and lectured extensively across the United States, Europe, Japan, and beyond. His work left an indelible mark on civil engineering science and continues to shape research and industry practice today.
A Fellow of both the American Ceramic Society and the American Concrete Institute, Sidney’s professional accolades also included listings in Who’s Who in America, Who’s Who in Engineering, and similar recognitions. His respected insights were often sought in consulting roles with Fortune 500 companies and as an expert witness in complex engineering cases, a testament to his authority in the field.
Beyond his academic and professional achievements, Sidney was deeply committed to personal growth and curiosity. He enjoyed music, exercise, and spirited card games with those he loved. He was also an active member of the Sons of Abraham synagogue in Lafayette, contributing to the community that had become his longtime home.
Sidney shared 70 years of marriage with his wife, Harriet, with whom he built a life grounded in support, intellectual curiosity, and devotion to family. He is survived by daughters Florence Wibel (Keith) of Scottsdale, AZ, and Julie Karni (Ben) of San Jose, CA and Western Springs, IL; grandchildren Etan Karni, Yael Karni (Sam), Sean Wibel, and David Wibel; and great-grandchildren Joshua Rienstra and Nina Rienstra — all of whom brought him great joy.
A funeral service took place Tuesday, October 28, at 1:00 p.m. at Soller-Baker Lafayette Chapel, with visitation beginning one hour prior. Interment will follow at Sons of Abraham Cemetery.
Professor Sidney Diamond’s legacy, as a pioneering researcher, dedicated teacher, and compassionate member of our community, will continue to inspire generations of engineers and scholars. We honor his contributions, celebrate his extraordinary life, and extend our heartfelt condolences to his family and loved ones.