Comparative study of TEOS-consolidants for adobe building conservation

Carmen Salazar-Hernández, María Jesús Puy-Alquiza, Raúl Miranda-Avilés, Mercedes Salazar-Hernández, Juan Manuel Mendoza-Miranda, Cristina Daniela Mocada-Sánchez, Julio del Ángel-Soto

Research output: Contribution to journalArticlepeer-review

Abstract

Four different consolidants for adobe buildings conservation were synthetized and evaluated. Adobe bricks materials tested from several Mining Haciendas of the seventeenth and eighteenth centuries located in Guanajuato, Mexico; these materials were characterized using XRD analysis, granulometry, porosity, moisture content, and mechanical resistance. The four consolidants synthetized are formulations based on TEOS (F1); TEOS with silica nanoparticles (F2); TEOS with PDMS-OH (F3) and hybrid consolidant formed by TEOS, PDMS, and nanoparticle silica (F4). The consolidants were tested and evaluated by porosity changes, absorption, and durability. The results show that colloidal silica improves the fulfill porosity by TEOS gels and the PDMS improves the flexibility on TEOS gel avoiding the crack. Thus, the addition of both components to TEOS gel results as an excellent consolidant treatment to adobe materials. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)685-696
Number of pages12
JournalJournal of Sol-Gel Science and Technology
Volume97
Issue number3
DOIs
StateAccepted/In press - 2021

Keywords

  • Colloidal silica
  • DBTL
  • PDMS-OH
  • SiO synthesis
  • TEOS consolidant

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