Fiche publication
Date publication
mars 2016
Journal
Langmuir : the ACS journal of surfaces and colloids
Auteurs
Membres identifiés du Cancéropôle Est :
Pr LESNIEWSKA Eric
Tous les auteurs :
Delhorme M, Labbez C, Turesson M, Lesniewska E, Woodward CE, Jönsson B
Lien Pubmed
Résumé
We study the aggregation of calcium silicate hydrate nanoplatelets on a surface by means of Monte Carlo and molecular dynamics simulations at thermodynamic equilibrium. Calcium silicate hydrate (C-S-H) is the main component formed in cement and is responsible for the strength of the material. The hydrate is formed in early cement paste and grows to form platelets on the nanoscale, which aggregate either on dissolving cement particles or on auxiliary particles. The general result is that the experimentally observed variations in these dynamic processes generically called growth can be rationalized from interaction free energies, that is, from pure thermodynamic arguments. We further show that the surface charge density of the particles determines the aggregate structures formed by C-S-H and thus their growth modes.
Référence
Langmuir. 2016 03 1;32(8):2058-66
