Cesar A. Constantino, Ph.D., director of business development for Separation Technologies LLC, will serve 3-year term on ASTM International board of directors. ASTM member since 2005, Constantino works on Committees C01 on Cement, C09 on Concrete and Concrete Aggregates, and E60 on Sustainability. Constantino also contributed to ASTM memorandum of understanding program in Latin America. He also contributes to several organizations outside of ASTM.