Revista ALCONPAT (Sep 2020)

Use of nano-SiO2 as a preventive maintenance surface treatment in concrete aged by carbonation

  • Laura Vaca Arciga,
  • Dulce Cruz Moreno,
  • Gerardo FaJardo San Miguel,
  • Ricardo Orozco Cruz,
  • Francisco Tienda Resendez

DOI
https://doi.org/10.21041/ra.v10i3.487
Journal volume & issue
Vol. 10, no. 3

Abstract

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This study aims to evaluate the use of silicon base (NS) and functionalized (NF) nanoparticles as emerging preventive surface treatment (ST) in reinforced concrete specimens. The specimens were fabricated with a water/cement (w/c) of 0.65 and subjected to a previous aging period through exposure to CO2. Subsequently, two different variants of the treatment were applied by spraying (using a 0.1% dispersion of nanoparticles in water) and then re-applied to carbonation. The carbonation depth and contact angle results indicate that there is an influence between the degree of aging and the efficiency of each treatment.

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