Scanning electron micrograph of calcium hydroxide.(courtesy Nicole Pagan Hasparyk, Furnas Centrais Eléctricas)

Elastic Moduli of Calcium Hydroxide

The determination of the elastic moduli of calcium hydroxide is difficult because large single crystals without flaws are not available. To circumvent this limitation, research has been performed using the Brillouin spectrum, compressing small crystals in a diamond cell, and testing compacted powder samples of different porosities..

We used the available experimental data and the Hashin-Shtrikmanin bounds to estimate the Young's modulus of calcium hydroxide to be in the range of 3.977 and 4.422 1010 N/m2. The Poisson's ratio was found to be in the range of 0.305 to 0.325.

Ref.

P.J.M. Monteiro and C.T. Chang, The Elastic Moduli of Calcium Hydroxide, Cem. Concr. Res. Vo. 25, 1605, No. 8 (1995).