Narayanan Neithalath is a Professor in the School of Sustainable Engineering and the Built Environment at Arizona State University. He received his Ph.D in Civil Engineering (specializing in Concrete Materials) from Purdue University in 2004. His research interests are in the areas of sustainable construction materials including high volume cement replacement materials for concrete, development of novel materials for desired performance levels such as pervious concretes, cement-free binder systems and lightweight aggregate concretes, and fundamental aspects of property development in conventional and novel cementitious (and cement-less or alkali activated)  systems. He is also interested in transport properties of concretes, electrical impedance sensing and sensor systems for concrete, and non-invasive and non-destructive testing of concrete. He has published around 150 papers in peer reviewed journals and conference proceedings, and has received several awards for his work on novel concrete materials including the ASCE Walter L. Huber Civil Engineering Research Prize, NSF CAREER award, Bengt Friberg award for outstanding paper, and PCA fellowship. (http://faculty.engineering.asu.edu/neithalath)