Kinetic Simulations of Cement Creep: Mechanisms from Shear Deformations of Glasses

The logarithmic deviatoric creep of cement paste is a technical and scientific challenge. Transition State Theory (TST) indicates that some nanoscale mechanisms of shear deformation, associated with a specific kind of strain hardening, can explain the type of deviatoric creep observed experimentally in mature cement pastes. To test this possible explanation, the authors simulate the shear deformations of a colloidal model of cement hydrates at the nanoscale. Results from quasi-static simulations indicate a strain hardening analogous to that postulated by the TST approach. Additional results from oscillatory shear (fatigue) simulations show an increase of deformation with number of loading cycles that is consistent with the observed creep. These findings indicate that nanoscale simulations can improve the authors current understanding of the mechanisms underlying creep, with potential to go beyond the logarithmic creep and explore the onset of failure during tertiary creep.

• Record URL:
  https://doi.org/10.1061/9780784479346.068
• 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:
  • Masoero, E
  • Bauchy, M
  • Del Gado, E
  • Manzano, H
  • Pellenq, R M
  • Ulm, F J
  • Yip, S
• 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 555-564
• Monograph Title: CONCREEP 10: Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures

Subject/Index Terms

• TRT Terms: Cement; Cement paste; Creep; Deformation; Kinetics; Loads; Shear properties; Strain hardening
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01576510
• Record Type: Publication
• ISBN: 9780784479346
• Files: TRIS, ASCE
• Created Date: Sep 25 2015 4:20PM