Particle-modified consolidants: A study on the effect of particles on sol-gel properties and consolidation effectiveness

Costanza Miliani; Melanie L. Velo-Simpson; George W. Scherer

doi:10.1016/j.culher.2006.10.002

Particle-modified consolidants: A study on the effect of particles on sol-gel properties and consolidation effectiveness

Costanza Miliani, Melanie L. Velo-Simpson, George W. Scherer

Civil & Environmental Engineering

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

127 Scopus citations

Abstract

In this paper, we have performed a systematic characterization of sol and gel properties for particle-modified silica consolidants filled with titania (TiO₂-PMC), alumina (Al₂O₃-PMC), and silica (SiO₂-PMC) particles. Viscosity of the sol is not increased much by loading with particles, especially for TiO₂-PMC and SiO₂-PMC. Composites show a strong reduction of silicate network shrinkage. Also, the incorporation of oxide particles into the matrix increases the elastic modulus while decreasing the thermal expansion. In agreement with the improvement of bulk gel properties, we observed better performance of PMCs against unfilled silicate upon consolidation of Ohio Massilian sandstone. Notably, the sulfate crystallization test has less effect on PMC-treated than on silica-treated samples.

Original language	English (US)
Pages (from-to)	1-6
Number of pages	6
Journal	Journal of Cultural Heritage
Volume	8
Issue number	1
DOIs	https://doi.org/10.1016/j.culher.2006.10.002
State	Published - Jan 2007

All Science Journal Classification (ASJC) codes

Chemistry (miscellaneous)
General Economics, Econometrics and Finance
Archaeology
Spectroscopy
Conservation
Computer Science Applications
Materials Science (miscellaneous)

Keywords

Consolidant
PMC
TEOS
Thermal expansion
Young's modulus

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10.1016/j.culher.2006.10.002

Cite this

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title = "Particle-modified consolidants: A study on the effect of particles on sol-gel properties and consolidation effectiveness",

abstract = "In this paper, we have performed a systematic characterization of sol and gel properties for particle-modified silica consolidants filled with titania (TiO2-PMC), alumina (Al2O3-PMC), and silica (SiO2-PMC) particles. Viscosity of the sol is not increased much by loading with particles, especially for TiO2-PMC and SiO2-PMC. Composites show a strong reduction of silicate network shrinkage. Also, the incorporation of oxide particles into the matrix increases the elastic modulus while decreasing the thermal expansion. In agreement with the improvement of bulk gel properties, we observed better performance of PMCs against unfilled silicate upon consolidation of Ohio Massilian sandstone. Notably, the sulfate crystallization test has less effect on PMC-treated than on silica-treated samples.",

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AU - Scherer, George W.

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N2 - In this paper, we have performed a systematic characterization of sol and gel properties for particle-modified silica consolidants filled with titania (TiO2-PMC), alumina (Al2O3-PMC), and silica (SiO2-PMC) particles. Viscosity of the sol is not increased much by loading with particles, especially for TiO2-PMC and SiO2-PMC. Composites show a strong reduction of silicate network shrinkage. Also, the incorporation of oxide particles into the matrix increases the elastic modulus while decreasing the thermal expansion. In agreement with the improvement of bulk gel properties, we observed better performance of PMCs against unfilled silicate upon consolidation of Ohio Massilian sandstone. Notably, the sulfate crystallization test has less effect on PMC-treated than on silica-treated samples.

AB - In this paper, we have performed a systematic characterization of sol and gel properties for particle-modified silica consolidants filled with titania (TiO2-PMC), alumina (Al2O3-PMC), and silica (SiO2-PMC) particles. Viscosity of the sol is not increased much by loading with particles, especially for TiO2-PMC and SiO2-PMC. Composites show a strong reduction of silicate network shrinkage. Also, the incorporation of oxide particles into the matrix increases the elastic modulus while decreasing the thermal expansion. In agreement with the improvement of bulk gel properties, we observed better performance of PMCs against unfilled silicate upon consolidation of Ohio Massilian sandstone. Notably, the sulfate crystallization test has less effect on PMC-treated than on silica-treated samples.

KW - Consolidant

KW - PMC

KW - TEOS

KW - Thermal expansion

KW - Young's modulus

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Particle-modified consolidants: A study on the effect of particles on sol-gel properties and consolidation effectiveness

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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