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

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

Research output: Contribution to journalArticle

96 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 languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalJournal of Cultural Heritage
Volume8
Issue number1
DOIs
StatePublished - Jan 1 2007

All Science Journal Classification (ASJC) codes

  • Conservation
  • Chemistry (miscellaneous)
  • Archaeology
  • Materials Science (miscellaneous)
  • Spectroscopy
  • Computer Science Applications

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