TY - JOUR AU - Vaca Arciga, Laura AU - Cruz Moreno, Dulce AU - FaJardo San Miguel, Gerardo AU - Orozco Cruz, Ricardo AU - Tienda Resendez, Francisco PY - 2020/09/01 Y2 - 2024/03/28 TI - Use of nano-SiO2 as a preventive maintenance surface treatment in concrete aged by carbonation JF - Revista ALCONPAT JA - Revista de la Asociación Latinoamericana de Control de Calidad, Patología y Recuperación de la Construcción VL - 10 IS - 3 SE - Basic Research DO - 10.21041/ra.v10i3.487 UR - https://revistaalconpat.org/index.php/RA/article/view/487 SP - 274 – 285 AB - 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. ER -