Determination of the elastic properties of amorphous materials: Case study of alkali-silica reaction gel

Juhyuk Moon; Sergio Speziale; Cagla Meral; Bora Kalkan; Simon M. Clark; Paulo J M Monteiro

doi:10.1016/j.cemconres.2013.08.012

Determination of the elastic properties of amorphous materials: Case study of alkali-silica reaction gel

Juhyuk Moon, Sergio Speziale, Cagla Meral, Bora Kalkan, Simon M. Clark, Paulo J M Monteiro^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

The gel formed during alkali-silica reaction (ASR) can lead to cracking and deterioration of a concrete structure. The elastic properties of the ASR gel using X-ray absorption and Brillouin spectroscopy measurements are reported. X-ray absorption was used to determine the density of the gel as a function of pressure, and the result yields an isothermal bulk modulus of 33 ± 2 GPa. Brillouin spectroscopy was applied to measure isentropic bulk (24.9-34.0 GPa) and shear moduli (8.7-10.1 GPa) of the gel. The range of values obtained is attributed to the variable composition of samples that were collected under field conditions. Results suggested that amorphous silica becomes expanded and compressible as it absorbs water molecules and alkali ions. This could explain high gel migration rates through the complex pore structures in concrete.

Original language	English
Pages (from-to)	55-60
Number of pages	6
Journal	Cement and Concrete Research
Volume	54
DOIs	https://doi.org/10.1016/j.cemconres.2013.08.012
Publication status	Published - 2013

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10.1016/j.cemconres.2013.08.012

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title = "Determination of the elastic properties of amorphous materials: Case study of alkali-silica reaction gel",

abstract = "The gel formed during alkali-silica reaction (ASR) can lead to cracking and deterioration of a concrete structure. The elastic properties of the ASR gel using X-ray absorption and Brillouin spectroscopy measurements are reported. X-ray absorption was used to determine the density of the gel as a function of pressure, and the result yields an isothermal bulk modulus of 33 ± 2 GPa. Brillouin spectroscopy was applied to measure isentropic bulk (24.9-34.0 GPa) and shear moduli (8.7-10.1 GPa) of the gel. The range of values obtained is attributed to the variable composition of samples that were collected under field conditions. Results suggested that amorphous silica becomes expanded and compressible as it absorbs water molecules and alkali ions. This could explain high gel migration rates through the complex pore structures in concrete.",

author = "Juhyuk Moon and Sergio Speziale and Cagla Meral and Bora Kalkan and Clark, {Simon M.} and Monteiro, {Paulo J M}",

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T1 - Determination of the elastic properties of amorphous materials

T2 - Case study of alkali-silica reaction gel

AU - Moon, Juhyuk

AU - Speziale, Sergio

AU - Meral, Cagla

AU - Kalkan, Bora

AU - Clark, Simon M.

AU - Monteiro, Paulo J M

PY - 2013

Y1 - 2013

N2 - The gel formed during alkali-silica reaction (ASR) can lead to cracking and deterioration of a concrete structure. The elastic properties of the ASR gel using X-ray absorption and Brillouin spectroscopy measurements are reported. X-ray absorption was used to determine the density of the gel as a function of pressure, and the result yields an isothermal bulk modulus of 33 ± 2 GPa. Brillouin spectroscopy was applied to measure isentropic bulk (24.9-34.0 GPa) and shear moduli (8.7-10.1 GPa) of the gel. The range of values obtained is attributed to the variable composition of samples that were collected under field conditions. Results suggested that amorphous silica becomes expanded and compressible as it absorbs water molecules and alkali ions. This could explain high gel migration rates through the complex pore structures in concrete.

AB - The gel formed during alkali-silica reaction (ASR) can lead to cracking and deterioration of a concrete structure. The elastic properties of the ASR gel using X-ray absorption and Brillouin spectroscopy measurements are reported. X-ray absorption was used to determine the density of the gel as a function of pressure, and the result yields an isothermal bulk modulus of 33 ± 2 GPa. Brillouin spectroscopy was applied to measure isentropic bulk (24.9-34.0 GPa) and shear moduli (8.7-10.1 GPa) of the gel. The range of values obtained is attributed to the variable composition of samples that were collected under field conditions. Results suggested that amorphous silica becomes expanded and compressible as it absorbs water molecules and alkali ions. This could explain high gel migration rates through the complex pore structures in concrete.

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DO - 10.1016/j.cemconres.2013.08.012

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EP - 60

JO - Cement and Concrete Research

JF - Cement and Concrete Research

SN - 0008-8846

ER -

Determination of the elastic properties of amorphous materials: Case study of alkali-silica reaction gel

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