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
|Published in:||Revista ALCONPAT, 1 September 2020, n. 3, v. 10|
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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