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

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URI: https://hdl.handle.net/11556/3877
ISSN: 1862-6300
DOI: 10.1002/pssa.200675359
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2007-06
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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.
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Electronic, Optical and Magnetic Materials , Condensed Matter Physics , Surfaces and Interfaces , Surfaces, Coatings and Films , Electrical and Electronic Engineering , Materials Chemistry
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journal article
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Manzano , H , Dolado , J S , Guerrero , A & Ayuela , A 2007 , ' Mechanical properties of crystalline calcium-silicate-hydrates : Comparison with cementitious C-S-H gels ' , Physica Status Solidi (A) Applications and Materials Science , vol. 204 , no. 6 , pp. 1775-1780 . https://doi.org/10.1002/pssa.200675359