scope:

This European Standard: gives methods and procedures for the assessment of the in-situ compressive strength of concrete in structures and precast concrete components; provides principles and guidance for establishing the relationships between test results from indirect test methods and the in-situ core strength; provides guidance for the assessment of the in-situ concrete compressive strength in structures or precast concrete components by indirect or combined methods. This European Standard does not include the following cases: where indirect methods are used without correlation to core strength; assessment based on cores less than 50 mm in diameter; assessment based on less than 3 cores; use of microcores.