Concrete strength development function according to MC 2010 in the light of tests

摘要

The issue of accuracy in calculation of concrete compressive strength, especially for a maturity period longer than 28 days, is useful in some calculations during designing concrete structures. The MC 2010 pre-standard and the PN-EN 1992-1-1 standard provide the equation for calculations of f_(cm)(t) including material ratio is dependent only on the strength class of cement. The paper evaluates accuracy of this approach with the example of a large set of research results for concrete of varied level of strength and quality of cements.