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RESISTANCE TO CHLORIDE PENETRATION OF MORTAR CONTAINING RICE HUSK ASH AND NANO-SIO2
ADÁN BORUNDA TERRAZAS
LUIS GERARDO FAJARDO GONZALEZ
FACUNDO ALMERAYA CALDERON
Carlos Barrios
ALBERTO MARTINEZ VILLAFAÑE
Acceso Abierto
Sin Derechos Reservados
nanometric-mortar
These days it has been shown that the nanoparticles (NP) have exceptional physical and chemical properties, to an extent that there are several studies referred to construction industry. These studies are aimed at achieving a better understanding of nanoscale properties of mortar. Main researches of nanometric mortar (NM) have added NP as: Nano-Silica (NS), nanoalumina, iron and titanium oxides nanoparticles, magnetite ash, carbon nanotubes and fly ash. However, these researches have been aimed at improving the mechanical properties of mortar, so there are few records of studies of the electrochemical behavior of NM. In this work, four groups of mortar prisms were made (size 40x40x160 mm) with a embedded bar, the water:cementitious ratio was 0.55, fine aggregate (sand), rice hunk ash (20.00% of cement weight) and NS (0.50% of cement weight). All prisms specimens were submitted to Accelerated corrosion test (ACT) with impressed voltage using a constant voltage of 12 V in 5% NaCl solution. The condition of prism was continuously monitored and the time of initiation of first crack was recorded. The rapid test chloride penetration (RTCP) was performed according to ASTM C1202-97. Moreover, the mortar porosity was determinate. The results of the measurements of RTCP and ACT show than the mortar porosity decreased with NS content. Being acceptable simultaneous use of Rice Husk Ash and NS.
2013
Memoria de congreso
Inglés
OTRAS
Versión revisada
submittedVersion - Versión revisada
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