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

Revista ALCONPAT

Francisco Tienda Resendez¹  Laura Vaca Arciga²  Dulce Cruz Moreno²  GerardoFaJardo San Miguel³  Ricardo Orozco Cruz⁴ 

[1] UNIVERSIDAD AUTÓNOMA DE NUEVO LEÓN - FACULTAD DE INGENIERÍA CIVIL;UNIVERSIDAD AUTÓNOMA DE NUEVO LEÓN FACULTAD DE INGENIERÍA CIVIL;UNIVERSIDAD AUTÓNOMA DE NUEVO LEÓNFACULTAD DE INGENIERÍA CIVIL;UNIVERSIDAD VERACRUZANA -INSTITUTO DE INGENIERÍA;

关键词: surface treatment;    prevention;    Nano SiO2;    concrete;    carbonation;   

DOI  :  10.21041/ra.v10i3.487

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown