Nanoindentation creep of synthesized calcium-(alumino)-silicate-hydrate

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 nanoindentatio..., , # Data from: Nanoindentation creep of synthesized calcium-(alumino)-silicate-hydrate

Dataset DOI: [10.5061/dryad.f7m0cfz7x](10.5061/dryad.f7m0cfz7x)

## Description of the data and file structure

The data set contains creep nanoindentation, x-ray diffraction, thermogravimetric analysis, and nuclear magnetic resonance spectroscopy data on four specimens of variable chemical composition.

Creep nanoindentation (CSH-10_creep_data.zip, CASH_10_02_creep_data.zip, CSH-13_creep_data.zip, and CSH-06_creep_data.zip):

1. .txt files ending in \"LC\" are the raw depth (nanometers), load (micronewtons), and time (seconds) data for individual indents
2. .txt files ending in “crp_analysis.txt” contains nanoindentation data analyzed by the nanoindenter software package (Hysitron), columns provide the following data: file name, contact depth (nanometers), max load (micronewtons), stiffness (micronewton/nanometer), area (nanometer squared), max depth (nanometer), effective depth (nanometer), reduced mod..., , **Changes after Jul 30, 2025:** Updated CSH-0.6 29Si NMR data to reflect revised deconvolution prior to submission of journal article, raw data are the same.