Junjie Wang is a research assistant professor at Tsinghua University, Haidian District, Beijing, China. He completed his Ph.D. studies in Civil Engineering at the Queen's University, Belfast in 2015. He received the Second Prize in the Henan Provincial Department of Education Science and Technology Achievement Award, Vebleo Fellow, and ESI highly cited paper award. He is among the world’s top 2% scientists. His interests include special concrete materials (such as recycled cement, geopolymer concrete recycled aggregate concrete, and highly durable and high-performance concrete), novel civil engineering materials, non-destructive testing methods for building materials, hazardous waste treatment, industrial solid waste recycling, concrete crack repair materials, new and old concrete bonding materials, etc.