Journal article
Density functional calculations of elastic properties of portlandite, Ca(OH)(2)
The elastic constants of portlandite, Ca(OH)(2), are calculated by use of density functional theory. A lattice optimization of an infinite (periodic boundary conditions) lattice is performed on which strains are applied. The elastic constants are extracted by minimizing Hooke's law of linear elasticity, applying a least-square method.
Young's modulus and bulk modulus are calculated from the stiffness matrix. The results are compared with the Brillouin zone spectroscopy results of F. Holuj et al. [F. Holuj, M. Drozdowski, M. Czajkowski, Brillouin spectrum of Ca(OH)(2), Solid State Commun., 56 (12) (1985) 1019-1021.]. An error estimate has been performed and the results are compared with experimental values.
Language: | English |
---|---|
Year: | 2005 |
Pages: | 199-202 |
ISSN: | 18733948 and 00088846 |
Types: | Journal article |
DOI: | 10.1016/j.cemconres.2004.07.036 |