耐久性一般(3)

[V-164] Long-term durability of concrete structures which were made by the new quality assurance system

〇Hiroki Hayashi¹, Tatsuya Nukushina¹, Takeyoshi Ikemura² (1.National Institute of Technology, Tokuyama College, 2.Yamaguchi Prefectural Government Public Works and Construction)

Keywords:concrete structure, crack, long-term durability, multiple regression analysis

Civil engineers consisting of ordering, building, designing and material manufacturing academics made the new quality assurance system the quality of structures was seen to have improved because of it. However, some structures which were made using the quality assurance system still developed cracks after only a few years had passed. An investigation into the cracks found in certain structures was carried out as a result. Therefore, structures that had existed for over 10 years were investigated, and now features many large cracks which provided interesting results.