Question: A tissue with no fixed charge is equilibrated with an atmosphere of relative humidity of 90 % and room temperature T=293 K. The same tissue

A tissue with no fixed charge is equilibrated with an atmosphere of relative humidity of 90 % and room temperature T=293 K. The same tissue is moved to an atmosphere of relative humidity of 100 % and same temperature. As a result of this, its volume increases by about 7 %. Calculate the volumetric modulus E 12 of the tissue. Data in the literature indicate that the increase in matric potential of the water in the tissue as a result of a 7 % increase in volume of the tissue is 5700 kPa.

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