Creep of bulk C-S-H: insights from molecular dynamics simulations

Bauchy, M., Masoero, E., Ulm, F. -J. and Pellenq, R. 2015. Creep of bulk C-S-H: insights from molecular dynamics simulations. Presented at: 10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures, Vienna, Austria, 21-23 Sept 2015. CONCREEP 10: Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures. ASCE, pp. 511-516. 10.1061/9780784479346.061

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Abstract

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.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	ASCE
ISBN:	9780784479346
Last Modified:	20 Oct 2021 11:18
URI:	https://orca.cardiff.ac.uk/id/eprint/144201

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