Compositional Evolution of Calcium Silicate Hydrate (C-S-H) Structures by Total X-Ray Scattering

Handle URI:
http://hdl.handle.net/10754/597819
Title:
Compositional Evolution of Calcium Silicate Hydrate (C-S-H) Structures by Total X-Ray Scattering
Authors:
Soyer-Uzun, Sezen; Chae, Sejung Rosie; Benmore, Chris J.; Wenk, Hans-Rudolf; Monteiro, Paulo J. M.
Abstract:
High-energy X-ray diffraction was employed to study the structural characteristics of a set of C-S-H samples with 0.6 ≤ C/S a;circ 1.75. It has been observed that Si is tetrahedrally coordinated to O for all samples irrespective of chemical composition and the Ca-O coordination number gradually decreases from ∼7 to ∼6 with increasing C/S ratio. This suggests that the C-S-H structure evolves from a tobermorite-like structure into a jennite-like structure as a function of increasing C/S ratio as the interlayer space decreases from ∼1.3 to ∼1 nm. Evolution of these short- and medium-range order structural characteristics in the C-S-H system is associated with the alteration of the Ca-O layers and silicate depolymerization with increasing C/S. © 2011 The American Ceramic Society.
Citation:
Soyer-Uzun S, Chae SR, Benmore CJ, Wenk H-R, Monteiro PJM (2011) Compositional Evolution of Calcium Silicate Hydrate (C-S-H) Structures by Total X-Ray Scattering. Journal of the American Ceramic Society 95: 793–798. Available: http://dx.doi.org/10.1111/j.1551-2916.2011.04989.x.
Publisher:
Wiley-Blackwell
Journal:
Journal of the American Ceramic Society
KAUST Grant Number:
KUS-11-004021
Issue Date:
9-Dec-2011
DOI:
10.1111/j.1551-2916.2011.04989.x
Type:
Article
ISSN:
0002-7820
Sponsors:
This publication was based on the work supported in part by Award No. KUS-11-004021, made by King Abdullah University of Science and Technology (KAUST). The work at Argonne National Laboratory was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
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Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorSoyer-Uzun, Sezenen
dc.contributor.authorChae, Sejung Rosieen
dc.contributor.authorBenmore, Chris J.en
dc.contributor.authorWenk, Hans-Rudolfen
dc.contributor.authorMonteiro, Paulo J. M.en
dc.date.accessioned2016-02-25T12:57:16Zen
dc.date.available2016-02-25T12:57:16Zen
dc.date.issued2011-12-09en
dc.identifier.citationSoyer-Uzun S, Chae SR, Benmore CJ, Wenk H-R, Monteiro PJM (2011) Compositional Evolution of Calcium Silicate Hydrate (C-S-H) Structures by Total X-Ray Scattering. Journal of the American Ceramic Society 95: 793–798. Available: http://dx.doi.org/10.1111/j.1551-2916.2011.04989.x.en
dc.identifier.issn0002-7820en
dc.identifier.doi10.1111/j.1551-2916.2011.04989.xen
dc.identifier.urihttp://hdl.handle.net/10754/597819en
dc.description.abstractHigh-energy X-ray diffraction was employed to study the structural characteristics of a set of C-S-H samples with 0.6 ≤ C/S a;circ 1.75. It has been observed that Si is tetrahedrally coordinated to O for all samples irrespective of chemical composition and the Ca-O coordination number gradually decreases from ∼7 to ∼6 with increasing C/S ratio. This suggests that the C-S-H structure evolves from a tobermorite-like structure into a jennite-like structure as a function of increasing C/S ratio as the interlayer space decreases from ∼1.3 to ∼1 nm. Evolution of these short- and medium-range order structural characteristics in the C-S-H system is associated with the alteration of the Ca-O layers and silicate depolymerization with increasing C/S. © 2011 The American Ceramic Society.en
dc.description.sponsorshipThis publication was based on the work supported in part by Award No. KUS-11-004021, made by King Abdullah University of Science and Technology (KAUST). The work at Argonne National Laboratory was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.en
dc.publisherWiley-Blackwellen
dc.titleCompositional Evolution of Calcium Silicate Hydrate (C-S-H) Structures by Total X-Ray Scatteringen
dc.typeArticleen
dc.identifier.journalJournal of the American Ceramic Societyen
dc.contributor.institutionDepartment of Civil and Environmental Engineering; University of California; Berkeley; California; 94720en
dc.contributor.institutionAdvanced Photon Source; Argonne National Laboratory; 9700 S. Cass Avenue; Argonne; Illinois; 60439en
dc.contributor.institutionDepartment of Earth and Planetary Science; University of California; Berkeley, California; 94720en
kaust.grant.numberKUS-11-004021en
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