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.
@article{arxiv.1506.06435,
title = {Creep of Bulk C--S--H: Insights from Molecular Dynamics Simulations},
author = {Mathieu Bauchy and Enrico Masoero and Franz-Joseph Ulm and Roland Pellenq},
journal= {arXiv preprint arXiv:1506.06435},
year = {2015}
}