For concrete, the elastic modulus is defined similarly with other materials even for steel. The larger difference is that the concrete has relatively very low tensile capacity. Most of the practical design of the concrete members, concrete tensile stress is considered to zero. This means the modulus in tension in not considered. When required for elastic analysis, the same value can be used for both compression and tension.

For a concrete member, if it is simulated with 3D solid elements in elastic analysis. The elastic modulus, Ec, is used with poison's ration. The effects of reinforcement can be considered either by uniform contribution or independent frame elements. Due to its complexity of reinforced concrete, elastic model is normally impossible to have more accurate simulations.

Flexural stiffness of a concrete member, frame or shell elements, is provided by I*Ec or D*Ec for frames or shells. For reinforced members, Ec is normally reduced by considering concrete cracks. Normally, on concrete in tension is considered.

Yours Sincerely,

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Hengfeng Wang A.M.ASCE

Struct Engr

HOK

New York NY

(646)385-7600

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Original Message:

Sent: 10-14-2018 04:29

From: Praveen Anand

Subject: Concrete Question

What its the difference between flexural and tensile modulus in concrete? And how these can be calculated?

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Praveen Anand S.M.ASCE

Chennai TN

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