Abstract
Factor and level of a degradation must be grasped appropriately in order to maintain concrete structure. Therefore, various inspections such as visual observation and hammering test are carried out. On the other hand, the maintenance based on dynamic information (stress, displacement, etc.) will be also important. Then, some in situ stresses measurement techniques are proposed, and those methods are gradually applied in fields.
In this paper, more simply and accurately residual stresses measuring method is proposed.
