Creep of Bulk C-S-H: Insights from Molecular Dynamics Simulations

Creep of Bulk C-S-H: Insights from Molecular Dynamics Simulations

Understanding the physical origin of creep in calcium-silicate-hydrate (C-S-H) is of primary importance, both for fundamental and practical interest. Here, we present a new method, based on molecular dynamics simulation, allowing us to simulate the long-term visco-elastic deformations of C-S-H. Unde...

Full description

Bibliographic Details
Main Authors: Bauchy, M. (Author), Masoero, E. (Author), Ulm, Franz-Josef (Contributor), Pellenq, Roland Jm (Contributor)
Other Authors: Massachusetts Institute of Technology. Department of Civil and Environmental Engineering (Contributor), MultiScale Materials Science for Energy and Environment, Joint MIT-CNRS Laboratory (Contributor)
Format: Article
Language:English
Published: American Society of Civil Engineers (ASCE), 2018-08-22T18:44:28Z.
Subjects:
Article
Online Access:Get fulltext
Description
Summary:Understanding the physical origin of creep in calcium-silicate-hydrate (C-S-H) is of primary importance, both for fundamental and practical interest. Here, we present a new method, based on molecular dynamics simulation, allowing us to simulate the long-term visco-elastic deformations of C-S-H. Under a given shear stress, C-S-H features a gradually increasing shear strain, which follows a logarithmic law. The computed creep modulus is found to be independent of the shear stress applied and is in excellent agreement with nanoindentation measurements, as extrapolated to zero porosity.
Schlumberger Limited
French Research National Agency (ANR-11-LABX-0053)
French Research National Agency (ANR-11-IDEX-0001-02)

Similar Items