Year	Research Projects
1922-	The Civil Engineering Laboratory (the predecessor of the PWRI) was established under the Japanese Ministry of Internal Affairs. The research team belonged to the Division 4 of the Civil Engineering Laboratory. We conducted research and analysis that were focused on: aggregate; concrete for pavement; and thermal property of mass concrete for dam construction.
1938-	We conducted research and analysis that were focused on design, material, and construction of concrete structures.
1948-	1950- We conducted research and analysis that were focused on: air-entrained concrete; and design method of concrete structures based on plasticity. 1955- We conducted research and analysis that were focused on: strength of dam cocnrete under triaxial stress; characteristics of concrete with crushed aggregate; mix proportion of pavement concrete; and quality inspection of concrete. 1975- We conducted research and analysis that were focused on: durability of concrete (alkali-aggregate reaction, chloride induced corrosion); seismic strength of concrete structures; repair methods for deteriorated concrete structures; (earthquake, chloride induced corrosion); quality control of aggregate for dam concrete; and quality management of concrete.
2001-	The research team was reorganized as the Structure Management Technology Team in the Independent Administrative Agency Public Works Research Institute(PWRI). We conducted research and analysis that were focused on: design method of concrete structures; quality control and inspection technique for concrete structures; and maintenance of existing concrete structures.
2008-	The research team was reorganized as the Concrete and Metallic Materials Research Team.
2015-	The research team was integrated into the Innovative Materials and Resources Research Center(iMaRRC) in the National Research and Development Agency Public Works Research Institute(PWRI).