Abstract
International Standard ISO 22965 concerning to production and conformity of concrete has been prepared by Sub-committee 3, Production and Execution of Concrete Structure in ISO/TC71, Concrete, Reinforced and Prestressed Concrete from a reactivation of SC3 at 1998. The DIS voting was closed at April of 2006 and was gotten approval from almost all participating member bodies. A final DIS voting will be opened in a few months. Essential contents and a background of ISO/DIS 22965 are described. Not only an application scope of standard, three concrete classes, consistence classes and strength classes but also an evaluation system of conformity are focused on. It may be thought that the evaluation system of conformity was to be transferred to new JIS Mark system at 2005 and is explained in detail.
