Zásadní změny v posuzování betonu v konstrukcích podle nového vydání ČSN EN 13791

New approach of assessment of in-situ compressive strength in concrete structures according to the new edition of ČSN EN 13791 standart

New edition of the ČSN EN 13791 standard [1] has been fully revised. More comprehensive guid­ance is provided on applying the test procedures, particularly with respect to defining test results, measurements, volume of concrete, test location and test region. The new edition deals with estimation of compressive strength for structural assessment of an existing structure or the assessment of the compressive strength class of concrete in case of doubt. New standard provides procedures for estimation of the in-situ compressive strength and characteristic in-situ compressive strength of concrete in structures using direct methods (core testing) and indirect methods, e.g. ultra-sonic pulse velocity or rebound number.