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Title: In Situ Soft X-ray Spectromicroscopy of Early Tricalcium Silicate Hydration

Journal Article · · Materials
DOI:https://doi.org/10.3390/ma9120976· OSTI ID:1413704
 [1];  [2];  [3];  [4];  [5];  [6]
  1. Hanyang Univ., Seoul (Korea)
  2. Tokyo Univ. of Science, Chiba (Japan)
  3. Univ. Autonoma de Chiapas, Chiapas (Mexico)
  4. National Univ. of Singapore (Singapore)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. Univ. of California, Berkeley, CA (United States)

The understanding and control of early hydration of tricalcium silicate (C3S) is of great importance to cement science and concrete technology. However, traditional characterization methods are incapable of providing morphological and spectroscopic information about in situ hydration at the nanoscale. Using soft X-ray spectromicroscopy, we report the changes in morphology and molecular structure of C3S at an early stage of hydration. In situ C3S hydration in a wet cell, beginning with induction (~1 h) and acceleration (~4 h) periods of up to ~8 h, was studied and compared with ex situ measurements in the deceleration period after 15 h of curing. Analysis of the near-edge X-ray absorption fine structure showed that the Ca binding energy and energy splitting of C3S changed rapidly in the early age of hydration and exhibited values similar to calcium silicate hydrate (C–S–H). The formation of C–S–H nanoseeds in the C3S solution and the development of a fibrillar C–S–H morphology on the C3S surface were visualized. Following this, silicate polymerization accompanied by C–S–H precipitation produced chemical shifts in the peaks of the main Si K edge and in multiple scattering. However, the silicate polymerization process did not significantly affect the Ca binding energy of C–S–H.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1413704
Journal Information:
Materials, Vol. 9, Issue 12; ISSN 1996-1944
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

References (35)

Hydration of tricalcium silicate in the presence of synthetic calcium–silicate–hydrate journal January 2009
Mechanisms of cement hydration journal December 2011
Soft X-ray induced modifications of PVA-based microbubbles in aqueous environment: a microspectroscopy study journal January 2009
Soft X-ray microscopes and their biological applications journal February 1995
Quantitative study of hydration of C3S and C2S by thermal analysis: Evolution and composition of C–S–H gels formed journal May 2010
A vacuum-compatible wet-specimen chamber for compact X-ray microscopy: VACUUM-COMPATIBLE WET-SPECIMEN CHAMBER FOR COMPACT X-RAY MICROSCOPY journal March 2007
A Reaction Zone Hypothesis for the Effects of Particle Size and Water-to-Cement Ratio on the Early Hydration Kinetics of C 3 S journal December 2013
X-Ray Absorption Near-Edge Structure (XANES) of Calcium L3,2 Edges of Various Calcium Compounds and X-Ray Excited Optical Luminescence (XEOL) Studies of Luminescent Calcium Compounds
  • Ko, J. Y. Peter; Zhou, Xing-Tai; Heigl, Franziskus
  • X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference, AIP Conference Proceedings https://doi.org/10.1063/1.2644585
conference January 2007
Ca X-ray absorption spectroscopy of C—S—H and some model compounds journal January 1997
In Situ Quasi-elastic Neutron Scattering Study of the Hydration of Tricalcium Silicate journal January 1998
Soft X‐ray Ptychographic Imaging and Morphological Quantification of Calcium Silicate Hydrates (C–S–H) journal August 2015
Soft X‐ray Spectromicroscopic Investigation of Synthetic C‐S‐H and C 3 S Hydration Products journal June 2015
Silicon K-edge XANES spectra of silicate minerals journal March 1995
Influence of Nucleation Seeding on the Hydration Mechanisms of Tricalcium Silicate and Cement journal February 2009
Dissolution theory applied to the induction period in alite hydration journal June 2010
Study of C-S-H growth on C3S surface during its early hydration journal May 2005
Quantitative in situ X-ray diffraction analysis of early hydration of Portland cement at defined temperatures journal June 2009
The nature of C-S-H in hardened cements journal August 1999
Characterization of Ca-phosphate biological materials by scanning transmission X-ray microscopy (STXM) at the Ca L2,3-, P L2,3- and C K-edges journal January 2015
Modelling early age hydration kinetics of alite journal July 2012
Direct three-dimensional observation of the microstructure and chemistry of C3S hydration journal October 2016
Preliminary study of very early hydration of superplasticized C3A+gypsum by environmental SEM journal July 1992
2 p x-ray absorption of 3 d transition-metal compounds: An atomic multiplet description including the crystal field journal September 1990
Chemical Shifts of Silicon X-ray Photoelectron Spectra by Polymerization Structures of Silicates journal July 1998
A new view on the kinetics of tricalcium silicate hydration journal August 2016
The Effect of Magnesium and Zinc Ions on the Hydration Kinetics of C 3 S journal August 2014
The calcium silicate hydrates journal February 2008
Effect of polymers on the nanostructure and on the carbonation of calcium silicate hydrates: a scanning transmission X-ray microscopy study journal September 2011
Scanning Transmission X-Ray Microscopic Study of Carbonated Calcium Silicate Hydrate
  • Ha, J.; Chae, S.; Chou, K. W.
  • Transportation Research Record: Journal of the Transportation Research Board, Vol. 2142, Issue 1 https://doi.org/10.3141/2142-12
journal January 2010
Hydration of Tricalcium Silicate Followed by 29Si NMR with Cross-Polarization journal February 1988
Transformation mechanism of amorphous calcium carbonate into calcite in the sea urchin larval spicule journal November 2008
Advances in understanding hydration of Portland cement journal December 2015
Hydration of C3S thin films journal April 2012
Characterization of Polymer Monoliths Containing Embedded Nanoparticles by Scanning Transmission X-ray Microscopy (STXM) journal March 2014
Observations of wet cement using electron microscopy journal August 1991

Cited By (3)