Open AccessComparison of the result of notched three point bending test with Model Code 2010 formulas
Author(s) -
Viktor Hlavička
Publication year - 2021
Publication title -
vasbetonépítés/concrete structures
Language(s) - English
Resource type - Journals
eISSN - 1586-0361
pISSN - 1419-6441
DOI - 10.32970/cs.2021.1.2
Subject(s) - flexural strength , three point flexural test , materials science , ultimate tensile strength , bending , compressive strength , composite material , elasticity (physics) , elastic modulus , young's modulus , fracture (geology) , structural engineering , engineering
The primary application of the notched three point bending test (3PBT) is to determine the fracture energy of concrete. However, the measurement setup is also suitable for determining additional mechanical parameters: flexural tensile strength, modulus of elasticity, and indirectly the compressive strength also. The aim of this paper is to present the calculation methods of the mechanical properties that can be determined from the results of a test series in which mixtures with different types of aggregates were used (quartz, dolomite, limestone, andesite, expanded clay). To validate the obtained results, the parameters determined from the measurements are compared to the formulas of the fib Model Code 2010. A recommendation is also presented for the calculation of the fracture energy by using compressive strength values measured on a half prism.