15 Values of modulus of elasticity MOE the ratio of stress i

15. Values of modulus of elasticity (MOE, the ratio of stress, i.e., force per unit area, to strain, e., deformation per unit length, in GPa) and flexural strength (a measure of the abil- ity to resist failure in bending, in MPa) were determined for a sample of concrete beams of a certain type, resulting in the following data (read from a graph in the article \"Effects of Aggregates and Microfillers on the Flexural Properties of Concrete,\" Magazine of Concrete Research, 1997: 81-98):

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