Quantifying the swelling properties of alkali-silica reaction (ASR) gels as a function of their composition

Asghar Gholizadeh-Vayghan, Farshad Rajabipour

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Synthetic alkali-silica reaction (ASR) gels were produced and tested to investigate the effects of chemical composition (Ca/Si, Na/Si, and K/Si atomic ratios) on the gels’ free swelling strain (εg,fr) and restrained swelling pressure (Prs). The gels were cast into disk-shape molds and exposed to distilled water after curing. Each gel's εg,fr was recorded over a period of 28 days, followed by measuring Prs, defined as the pressure required to fully reverse and eliminate the gel's free swelling under a drained configuration. Regression models were developed linking gels compositions to their swelling properties. The outcomes show that Na/Si and K/Si monotonically increase εg,fr. Increasing Ca/Si up to 0.23 drastically reduces εg,fr; higher Ca/Si has modest effect on free swelling. Prs increases by increasing calcium up to a pessimum Ca/Si level; Prs decreases for higher Ca/Si. The value of (Ca/Si)pess is related to the alkali content of the gel. Prs also increases by increasing the gel's alkali content, while a (Na/Si)pess exists in the range 0.85-0.95. These observations are linked with the roles of alkalis and calcium in modifying the silica gel network.

Original languageEnglish (US)
Pages (from-to)3801-3818
Number of pages18
JournalJournal of the American Ceramic Society
Volume100
Issue number8
DOIs
StatePublished - Aug 2017

Fingerprint

Alkalies
Silicon Dioxide
Swelling
Gels
Silica
Chemical analysis
Calcium
Silica Gel
Silica gel
Molds
Curing
Water

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

@article{09480e4725ae4a83aacd71217d8887e4,
title = "Quantifying the swelling properties of alkali-silica reaction (ASR) gels as a function of their composition",
abstract = "Synthetic alkali-silica reaction (ASR) gels were produced and tested to investigate the effects of chemical composition (Ca/Si, Na/Si, and K/Si atomic ratios) on the gels’ free swelling strain (εg,fr) and restrained swelling pressure (Prs). The gels were cast into disk-shape molds and exposed to distilled water after curing. Each gel's εg,fr was recorded over a period of 28 days, followed by measuring Prs, defined as the pressure required to fully reverse and eliminate the gel's free swelling under a drained configuration. Regression models were developed linking gels compositions to their swelling properties. The outcomes show that Na/Si and K/Si monotonically increase εg,fr. Increasing Ca/Si up to 0.23 drastically reduces εg,fr; higher Ca/Si has modest effect on free swelling. Prs increases by increasing calcium up to a pessimum Ca/Si level; Prs decreases for higher Ca/Si. The value of (Ca/Si)pess is related to the alkali content of the gel. Prs also increases by increasing the gel's alkali content, while a (Na/Si)pess exists in the range 0.85-0.95. These observations are linked with the roles of alkalis and calcium in modifying the silica gel network.",
author = "Asghar Gholizadeh-Vayghan and Farshad Rajabipour",
year = "2017",
month = "8",
doi = "10.1111/jace.14893",
language = "English (US)",
volume = "100",
pages = "3801--3818",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
publisher = "Wiley-Blackwell",
number = "8",

}

Quantifying the swelling properties of alkali-silica reaction (ASR) gels as a function of their composition. / Gholizadeh-Vayghan, Asghar; Rajabipour, Farshad.

In: Journal of the American Ceramic Society, Vol. 100, No. 8, 08.2017, p. 3801-3818.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Quantifying the swelling properties of alkali-silica reaction (ASR) gels as a function of their composition

AU - Gholizadeh-Vayghan, Asghar

AU - Rajabipour, Farshad

PY - 2017/8

Y1 - 2017/8

N2 - Synthetic alkali-silica reaction (ASR) gels were produced and tested to investigate the effects of chemical composition (Ca/Si, Na/Si, and K/Si atomic ratios) on the gels’ free swelling strain (εg,fr) and restrained swelling pressure (Prs). The gels were cast into disk-shape molds and exposed to distilled water after curing. Each gel's εg,fr was recorded over a period of 28 days, followed by measuring Prs, defined as the pressure required to fully reverse and eliminate the gel's free swelling under a drained configuration. Regression models were developed linking gels compositions to their swelling properties. The outcomes show that Na/Si and K/Si monotonically increase εg,fr. Increasing Ca/Si up to 0.23 drastically reduces εg,fr; higher Ca/Si has modest effect on free swelling. Prs increases by increasing calcium up to a pessimum Ca/Si level; Prs decreases for higher Ca/Si. The value of (Ca/Si)pess is related to the alkali content of the gel. Prs also increases by increasing the gel's alkali content, while a (Na/Si)pess exists in the range 0.85-0.95. These observations are linked with the roles of alkalis and calcium in modifying the silica gel network.

AB - Synthetic alkali-silica reaction (ASR) gels were produced and tested to investigate the effects of chemical composition (Ca/Si, Na/Si, and K/Si atomic ratios) on the gels’ free swelling strain (εg,fr) and restrained swelling pressure (Prs). The gels were cast into disk-shape molds and exposed to distilled water after curing. Each gel's εg,fr was recorded over a period of 28 days, followed by measuring Prs, defined as the pressure required to fully reverse and eliminate the gel's free swelling under a drained configuration. Regression models were developed linking gels compositions to their swelling properties. The outcomes show that Na/Si and K/Si monotonically increase εg,fr. Increasing Ca/Si up to 0.23 drastically reduces εg,fr; higher Ca/Si has modest effect on free swelling. Prs increases by increasing calcium up to a pessimum Ca/Si level; Prs decreases for higher Ca/Si. The value of (Ca/Si)pess is related to the alkali content of the gel. Prs also increases by increasing the gel's alkali content, while a (Na/Si)pess exists in the range 0.85-0.95. These observations are linked with the roles of alkalis and calcium in modifying the silica gel network.

UR - http://www.scopus.com/inward/record.url?scp=85018339145&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85018339145&partnerID=8YFLogxK

U2 - 10.1111/jace.14893

DO - 10.1111/jace.14893

M3 - Article

AN - SCOPUS:85018339145

VL - 100

SP - 3801

EP - 3818

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 8

ER -