Mechanical properties of crystalline calcium-silicate-hydrates: Comparison with cementitious C-S-H gels

H. Manzano; J. S. Dolado; A. Guerrero; A. Ayuela

doi:10.1002/pssa.200675359

Mechanical properties of crystalline calcium-silicate-hydrates: Comparison with cementitious C-S-H gels

H. Manzano, J. S. Dolado, A. Guerrero, A. Ayuela

Tecnalia Research & Innovation

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Abstract

This work explores from a theoretical viewpoint the mechanical properties of the most important hydration product present in cementitious environments, the so called C-S-H (calcium-silicate-hydrate) gel. The dependence of the bulk (K), shear (G) and Young's (E) modulus for the C-S-H crystals respect to its composition and the length of its silicate chains is analysed by lattice dynamic simulations with parameterised two-body and three-body potentials. Our simulations reveal that the mechanical properties of C-S-H crystals show a strong dependence on their composition. Nevertheless our calculated numbers systematically overestimate the experimental values for C-S-H gels. Only when the finite length of the silicate chains is taken into account this discrepancy disappears.

Original language	English
Pages (from-to)	1775-1780
Number of pages	6
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	204
Issue number	6
DOIs	https://doi.org/10.1002/pssa.200675359
Publication status	Published - Jun 2007

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Mechanical properties of crystalline calcium-silicate-hydrates: Comparison with cementitious C-S-H gels

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