Skip to main content
Dryad

Data from: Nanoindentation creep of synthesized calcium-(alumino)-silicate-hydrate

Hunnicutt, William1; Mondal, Paramita2; Struble, Leslie3

Published Jul 30, 2025; Updated Dec 08, 2025 on Dryad. https://doi.org/10.5061/dryad.f7m0cfz7x

Data files

Jul 30, 2025 version files 103.07 MB
Dec 08, 2025 version files 103.07 MB

Click names to download individual files

Abstract

The long term dimensional stability of concrete is crucial to long-lasting infrastructure and the primary binding phase (calcium-silicate-hydrate) is thought to be the primary phase responsible for viscoelastic behavior. Previous research indicates that the molecular structure of calcium-silicate-hydrate plays a role in viscoelastic behavior and is modified by changing the chemical composition, including the addition of aluminum into the structure. In this study, calcium-(alumino)-silicate-hydrate is synthesized with different molecular structure and tested for viscoelastic behavior using creep nanoindentation methods.

The data presented here are used to support the conclusion that micro-sliding of calcium-(alumino)-silicate-hydrate sheets relative to each other at interlayer sites is a source of viscoelastic behavior and that increased bonding and ionic correlation forces across the interlayer reduce the amount of time-dependent deformation. Supporting data include creep nanoindentation (load, displacement, and time), thermogravimetric analysis (temperature and weight loss), x-ray diffraction (diffraction angle and intensity), and solid-state nuclear magnetic resonance spectroscopy (chemical shift and intensity) for four different specimens with different molecular structures/chemical compositions.