Karthik Obla, Ph.D., P.E. is the Managing Director, Research and Materials Engineering at the National Ready Mixed Concrete Association (NRMCA). He has over 18 years of experience in concrete technology, research, materials, and products. He oversees NRMCA's concrete laboratory and research program. His expertise is in the field of concrete materials technology, specifications, and the use of mineral and chemical admixtures. He is a Fellow of ACI and a winner of ACI's Young Professional Achievement Award. Dr. Obla is an active member of various ACI, ASTM, and TRB technical committees and serves as Chair for ASTM C09.49 − Pervious Concrete and ACI 232 − Fly ash. He has published over 50 technical articles in journals and has presented in several international conferences. He holds a Ph.D. in Civil Engineering from University of Michigan, Ann Arbor and is a licensed professional engineer in the state of Michigan and Maryland. He served as Vice-President and President for the ACI San Antonio Chapter. Prior to joining NRMCA in 2003 he was Technical Manager at Boral Material Technologies for several years.