On Oct. 9, 2006, invited by Prof. Xianglin Gu, Prof. Folker H. Wittmann ( Member of Russian Academy of Sciences, Director of Aedificat Institute Freiburg and Professor (Academician) at Qingdao Technological University), gave a lecture on “Durability of Reinforced Concrete Structures under Combined Mechanical and Environmental Loads” to the Department of Building Engineering.