Effect of Nano Seeds in C-S-H Gel Formation: Simulation Study from the Colloidal Point of View

The addition of external nanoparticles, mainly nano silica during the hydration of cement is a field of investigation in high performance cements. The added particles act as seeds and initiate early nucleation and subsequent growth of C-S-H gel. Nucleation is triggered very early, before enough clinker grains are dissolved or in other words, before the super saturation condition is attained. Hence, depending on the amount of added seed, the morphology and the mechanical properties of the product differ. Experimental studies in this area are less favored due to economic reasons and simulation studies are rare in the literature. An earlier work by some of the authors introduced a Monte Carlo model which dealt with the kinetics of the hydration process at early ages. The colloidal model incorporated random nucleation in the bulk, followed by an Avramian style layer by layer growth of 5nm sized C-S-H particles. The model was based on a Random Sequential Addition scheme and enabled a satisfactory rationalization of the early growth of C-S-H gel. In the present study, the authors extend this model for the addition of extra seeds and for different water to cement ratios.

• Record URL:
  https://doi.org/10.1061/9780784479346.104
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784479346
• Supplemental Notes:
  • © 2015 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Prabhu, Achutha
  • Gimel, Jean-Christophe
  • Ayuela, Andres
  • Dolado, Jorge Sanchez
• Conference:
  • 10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures
  • Location: Vienna , Austria
  • Date: 2015-9-21 to 2015-9-23
• Publication Date: 2015-9

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 877-886
• Monograph Title: CONCREEP 10: Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures

Subject/Index Terms

• TRT Terms: Calcium silicate; Colloidal systems; Gels; Nanotechnology; Seeds
• Uncontrolled Terms: Calcium-silicate-hydrate (C-S-H); Nanosilica
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01577085
• Record Type: Publication
• ISBN: 9780784479346
• Files: TRIS, ASCE
• Created Date: Sep 28 2015 8:57AM