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Title: Incorporation of zinc into calcium silicate hydrates, Part I: formation of C-S-H(I) with C/S=2/3 and its isochemical counterpart gyrolite

Abstract

We have investigated the incorporation of zinc into both nanocrystalline and crystalline calcium silicate hydrates with starting C/S ratios of 2/3 (0.66). Zinc was added replacing calcium in the starting mixtures [Zn/(Zn+Ca)=0-1/4; 0-10 wt.% Zn], and the resultant phases were characterised using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), differential thermal analysis-thermogravimetry (DTA-TG) and environmental scanning electron microscopy (ESEM). In both groups of samples, increasing zinc content led to gradual structural changes, until eventually a second phase was formed. Zinc was incorporated to similar limits in both sets of samples. The thermal stability of the structures increased to a certain zinc content, beyond which there was structural destabilisation. Zinc incorporation is possible up to {approx}6 wt.%. Our observations strongly indicate similar zinc incorporation mechanisms in both sample series, namely incorporation of zinc into the interlayer of C-S-H(I) and the X-sheet of gyrolite for nanocrystalline and crystalline samples, respectively.

Authors:
 [1];  [2];  [2];  [2];  [3];  [2];  [2]
  1. Forschungszentrum Karlsruhe GmbH, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany). E-mail: andreas.stumm@itc-wgt.fzk.de
  2. Forschungszentrum Karlsruhe GmbH, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany)
  3. (United Kingdom)
Publication Date:
OSTI Identifier:
20706230
Resource Type:
Journal Article
Journal Name:
Cement and Concrete Research
Additional Journal Information:
Journal Volume: 35; Journal Issue: 9; Other Information: DOI: 10.1016/j.cemconres.2004.11.007; PII: S0008-8846(04)00498-3; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0008-8846
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CALCIUM SILICATES; CRYSTAL STRUCTURE; CRYSTALS; DIFFERENTIAL THERMAL ANALYSIS; HYDRATES; NANOSTRUCTURES; SCANNING ELECTRON MICROSCOPY; STABILITY; THERMAL GRAVIMETRIC ANALYSIS; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY; ZINC

Citation Formats

Stumm, Andreas, Garbev, Krassimir, Beuchle, Guenter, Black, Leon, Materials Research Institute, Sheffield Hallam University, Sheffield S1 1WB, Stemmermann, Peter, and Nueesch, Rolf. Incorporation of zinc into calcium silicate hydrates, Part I: formation of C-S-H(I) with C/S=2/3 and its isochemical counterpart gyrolite. United States: N. p., 2005. Web. doi:10.1016/j.cemconres.2004.11.007.
Stumm, Andreas, Garbev, Krassimir, Beuchle, Guenter, Black, Leon, Materials Research Institute, Sheffield Hallam University, Sheffield S1 1WB, Stemmermann, Peter, & Nueesch, Rolf. Incorporation of zinc into calcium silicate hydrates, Part I: formation of C-S-H(I) with C/S=2/3 and its isochemical counterpart gyrolite. United States. doi:10.1016/j.cemconres.2004.11.007.
Stumm, Andreas, Garbev, Krassimir, Beuchle, Guenter, Black, Leon, Materials Research Institute, Sheffield Hallam University, Sheffield S1 1WB, Stemmermann, Peter, and Nueesch, Rolf. Thu . "Incorporation of zinc into calcium silicate hydrates, Part I: formation of C-S-H(I) with C/S=2/3 and its isochemical counterpart gyrolite". United States. doi:10.1016/j.cemconres.2004.11.007.
@article{osti_20706230,
title = {Incorporation of zinc into calcium silicate hydrates, Part I: formation of C-S-H(I) with C/S=2/3 and its isochemical counterpart gyrolite},
author = {Stumm, Andreas and Garbev, Krassimir and Beuchle, Guenter and Black, Leon and Materials Research Institute, Sheffield Hallam University, Sheffield S1 1WB and Stemmermann, Peter and Nueesch, Rolf},
abstractNote = {We have investigated the incorporation of zinc into both nanocrystalline and crystalline calcium silicate hydrates with starting C/S ratios of 2/3 (0.66). Zinc was added replacing calcium in the starting mixtures [Zn/(Zn+Ca)=0-1/4; 0-10 wt.% Zn], and the resultant phases were characterised using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), differential thermal analysis-thermogravimetry (DTA-TG) and environmental scanning electron microscopy (ESEM). In both groups of samples, increasing zinc content led to gradual structural changes, until eventually a second phase was formed. Zinc was incorporated to similar limits in both sets of samples. The thermal stability of the structures increased to a certain zinc content, beyond which there was structural destabilisation. Zinc incorporation is possible up to {approx}6 wt.%. Our observations strongly indicate similar zinc incorporation mechanisms in both sample series, namely incorporation of zinc into the interlayer of C-S-H(I) and the X-sheet of gyrolite for nanocrystalline and crystalline samples, respectively.},
doi = {10.1016/j.cemconres.2004.11.007},
journal = {Cement and Concrete Research},
issn = {0008-8846},
number = 9,
volume = 35,
place = {United States},
year = {2005},
month = {9}
}