Will after a certain time (such as 54 days) all the concrete samples reach the same moisture content due to the hydration process?

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Habibi Mohamed

Do you have the same material composition?

If they are from the same material, they may have the same moisture uptake at saturation.

If they are from three different materials, you may obtain 3 saturation rate, depending on the diffusion coefficients.

Imrose B. Muhit

Theoretically, it should have close to the same MC for all 3 samples if constituent materials are from the same source with identical mix portion. However, in practice, this is not the case.