Aggregation of Calcium Silicate Hydrate Nanoplatelets.

Research output: Contribution to journalArticle

Abstract

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.

Details

Authors
  • Maxime Delhorme
  • Christophe Labbez
  • Martin Turesson
  • Eric Lesniewska
  • Cliff E Woodward
  • Bo Jönsson
Organisations
External organisations
  • University of Burgundy - Franche-Comté
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Materials Chemistry
Original languageEnglish
Pages (from-to)2058-2066
JournalLangmuir
Volume32
Issue number8
Publication statusPublished - 2016
Publication categoryResearch
Peer-reviewedYes