Normally the correction factors for the compressive strength is considered in estimations, not directly the corrections for modulus of elasticity. However to find the correction factors for modulus of elasticity, since modulus of elasticity equals the ratio of stress over strain, by applying the correction factors to stress you can find correction factors on modulus of elasticity.

To find the correction factors for core specimens with the slenderness (Ratio of Length to Diameter "L/D") of less than 2 that you are looking for, the value of the compressive strength must be corrected by multiplying by the appropriate correction factors indicated below:

- For L/D = 1.75, strength correction factor = 0.98

- For L/D = 1.50, strength correction factor = 0.96

- For L/D = 1.25, strength correction factor = 0.93

- For L/D = 1.00, strength correction factor = 0.87

I hope this is helpful for you.

All the best.

Thank you for your interest.

EN 12390-13 was used to calculate elastic modulus. In that standard, the compressive strength should be known. Therefore, correction factors for compressive strength were used. I think, it should be satisfied.

You are welcome.

I am glad that my answer was helpful for you.

As I mentioned and you correctly applied it the best way is applying the correction factor first for the compressive strength instead and then to find the correction factors for modulus of elasticity, since modulus of elasticity equals the ratio of stress over strain, by applying the correction factors to stress you can find correction factors on modulus of elasticity.

All the best.