For cement and concrete materials, can the young's modulus be obtained from either the tension stress-strain curve or the compression stress-strain curve? if not, what's the difference between them?
As long as the stress and strain connection is linear there shouldn't be any difference between the Young Modulus obtained from tensile and compression tests done for small elastic deformations where Hooks' Law is definitely valid.
In the linear range there is no difference. As the concrete cracks, the modulus will be different in tension and compression. This only applies to plain concrete.
Thanks, Tarik and Gordon. I was thinking that it is easy to perform the compression test but difficult to do the direct tensile test. Hence, to get the Young's Modulus of concrete, compression test is more acceptable if there is no difference between them in obtaining the linear-part E. I read the Abaqus concrete model, the numerical simulation assumes E same and thus agrees your comments.
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