Effect on fresh C-S-H gels of the simultaneous addition of alkali and aluminium

Ines Garcia Lodeiro, Aday Jimenez, A. Palomo, Donald E MacPhee

Research output: Contribution to journalArticle

111 Citations (Scopus)

Abstract

Reducing Portland cement content in cementitious binders offers a means to address the adverse environmental impacts of Portland cement manufacture. This paper investigates the impacts on hydration product chemistry of partially replacing Portland cement with alkali-activated aluminosilicates. Here, short-term effects of soluble alkali and aluminium, likely to be available in an alkali-activated system, on the structure of synthetic C-S-H gels are assessed. C-S-H gels (synthesized at pH values of over 13) were mixed with different concentrations of aluminium nitrate and sodium hydroxide. The gels were characterized by FTIR, TEM/EDX and XRD 72 h later. The results showed that both alkali and aluminium increased the degree of silicate polymerisation in the C-S-H gels and precipitated a crystalline calcium aluminosilicate phase. (C) 2009 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)27-32
Number of pages6
JournalCement and Concrete Research
Volume40
Issue number1
Early online date8 Sep 2009
DOIs
Publication statusPublished - Jan 2010

Keywords

  • Calcium-Silicate-Hydrate (C-S-H)
  • Spectroscopy
  • TEM
  • Stratlingite
  • calcium-silicate-hydrate
  • nulear-magnetic-resonance
  • substitued tobermorites
  • Portland cements
  • phase-relations
  • activated slag
  • AL-27
  • SI-29
  • metakaolin
  • NMR

Cite this

Effect on fresh C-S-H gels of the simultaneous addition of alkali and aluminium. / Garcia Lodeiro, Ines; Jimenez, Aday; Palomo, A.; MacPhee, Donald E.

In: Cement and Concrete Research, Vol. 40, No. 1, 01.2010, p. 27-32.

Research output: Contribution to journalArticle

Garcia Lodeiro, Ines ; Jimenez, Aday ; Palomo, A. ; MacPhee, Donald E. / Effect on fresh C-S-H gels of the simultaneous addition of alkali and aluminium. In: Cement and Concrete Research. 2010 ; Vol. 40, No. 1. pp. 27-32.
@article{d354f33dd02c403eb3896354812ed2fe,
title = "Effect on fresh C-S-H gels of the simultaneous addition of alkali and aluminium",
abstract = "Reducing Portland cement content in cementitious binders offers a means to address the adverse environmental impacts of Portland cement manufacture. This paper investigates the impacts on hydration product chemistry of partially replacing Portland cement with alkali-activated aluminosilicates. Here, short-term effects of soluble alkali and aluminium, likely to be available in an alkali-activated system, on the structure of synthetic C-S-H gels are assessed. C-S-H gels (synthesized at pH values of over 13) were mixed with different concentrations of aluminium nitrate and sodium hydroxide. The gels were characterized by FTIR, TEM/EDX and XRD 72 h later. The results showed that both alkali and aluminium increased the degree of silicate polymerisation in the C-S-H gels and precipitated a crystalline calcium aluminosilicate phase. (C) 2009 Elsevier Ltd. All rights reserved.",
keywords = "Calcium-Silicate-Hydrate (C-S-H), Spectroscopy, TEM, Stratlingite, calcium-silicate-hydrate, nulear-magnetic-resonance, substitued tobermorites, Portland cements, phase-relations, activated slag, AL-27, SI-29, metakaolin, NMR",
author = "{Garcia Lodeiro}, Ines and Aday Jimenez and A. Palomo and MacPhee, {Donald E}",
year = "2010",
month = "1",
doi = "10.1016/j.cemconres.2009.08.004",
language = "English",
volume = "40",
pages = "27--32",
journal = "Cement and Concrete Research",
issn = "0008-8846",
publisher = "PERGAMON-ELSEVIER SCIENCE LTD",
number = "1",

}

TY - JOUR

T1 - Effect on fresh C-S-H gels of the simultaneous addition of alkali and aluminium

AU - Garcia Lodeiro, Ines

AU - Jimenez, Aday

AU - Palomo, A.

AU - MacPhee, Donald E

PY - 2010/1

Y1 - 2010/1

N2 - Reducing Portland cement content in cementitious binders offers a means to address the adverse environmental impacts of Portland cement manufacture. This paper investigates the impacts on hydration product chemistry of partially replacing Portland cement with alkali-activated aluminosilicates. Here, short-term effects of soluble alkali and aluminium, likely to be available in an alkali-activated system, on the structure of synthetic C-S-H gels are assessed. C-S-H gels (synthesized at pH values of over 13) were mixed with different concentrations of aluminium nitrate and sodium hydroxide. The gels were characterized by FTIR, TEM/EDX and XRD 72 h later. The results showed that both alkali and aluminium increased the degree of silicate polymerisation in the C-S-H gels and precipitated a crystalline calcium aluminosilicate phase. (C) 2009 Elsevier Ltd. All rights reserved.

AB - Reducing Portland cement content in cementitious binders offers a means to address the adverse environmental impacts of Portland cement manufacture. This paper investigates the impacts on hydration product chemistry of partially replacing Portland cement with alkali-activated aluminosilicates. Here, short-term effects of soluble alkali and aluminium, likely to be available in an alkali-activated system, on the structure of synthetic C-S-H gels are assessed. C-S-H gels (synthesized at pH values of over 13) were mixed with different concentrations of aluminium nitrate and sodium hydroxide. The gels were characterized by FTIR, TEM/EDX and XRD 72 h later. The results showed that both alkali and aluminium increased the degree of silicate polymerisation in the C-S-H gels and precipitated a crystalline calcium aluminosilicate phase. (C) 2009 Elsevier Ltd. All rights reserved.

KW - Calcium-Silicate-Hydrate (C-S-H)

KW - Spectroscopy

KW - TEM

KW - Stratlingite

KW - calcium-silicate-hydrate

KW - nulear-magnetic-resonance

KW - substitued tobermorites

KW - Portland cements

KW - phase-relations

KW - activated slag

KW - AL-27

KW - SI-29

KW - metakaolin

KW - NMR

U2 - 10.1016/j.cemconres.2009.08.004

DO - 10.1016/j.cemconres.2009.08.004

M3 - Article

VL - 40

SP - 27

EP - 32

JO - Cement and Concrete Research

JF - Cement and Concrete Research

SN - 0008-8846

IS - 1

ER -