DOI: 10.5061/dryad.f7m0cfz7x
title: Data from: Nanoindentation creep of synthesized calcium-(alumino)-silicate-hydrate

description: 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.
description: # 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 modulus (gigapascal),
 hardness (gigapascal), fitting parameter (unitless), final indentation
 depth (nanometer), fitting parameter (unitless), x position (millimeter),
 y position (millimeter), drift (nanometer/second). X-ray diffraction: 1.
 Spreadsheet files containing the angle (2theta) and signal intensity
 Thermogravimetric analysis: 1. .txt files containing time (seconds),
 temperature (degrees Celsius), and mass (milligrams) Nuclear magnetic
 resonance spectroscopy 1. Raw data files (.mnova), operable with Mestrelab
 MNOVA software provides chemical shift (ppm) and intensity ### Files and
 variables #### File: CSH-10_creep_data.zip #### File:
 CASH_10_02_creep_data.zip #### File: CSH-13_creep_data.zip #### File:
 CSH-06_creep_data.7z **Description:** Creep nanoindentation containing
 depth, load, and time data. #### File: CASH-10-02_TGA_data.txt #### File:
 CSH-06_TGA_data.txt #### File: CSH-10-_TGA_data.txt #### File:
 CSH-13_TGA_data.txt **Description:** Thermogravimetric analysis #####
 Variables * Time * Temperature * Mass #### File: CASH-10-02_XRD_data.csv
 #### File: CSH-06_XRD_data.csv #### File: CSH-13_XRD_data.csv #### File:
 CSH-10_XRD_data.csv **Description:** X-ray diffraction data #####
 Variables * Angle * Intensity #### File: CASH-10-02_29Si_NMR_data.jdx ####
 File: CSH-06_29Si_NMR_data.jdx #### File: CSH-10_29Si_NMR_data.jdx ####
 File: CSH-13_29Si_NMR_data.jdx **Description:** 29Si Nuclear magnetic
 resonance spectroscopy data. Data were initially processed with Mestrelab
 Mnova. #### File: CASH-10-02_27Al_NMR_data.jdx **Description:** 27Al
 Nuclear magnetic resonance spectroscopy data. Data were initially
 processed with Mestrelab Mnova. ## Code/software Spreadsheet software
 (e.g., Microsoft Excel) Mestrelab Mnova, or other suitable spectroscopic
 data analysis software. ## Access information Other publicly accessible
 locations of the data: * None Data was derived from the following sources:
 * Collected by the author.