TY - JOUR 
A1 - Marcos Ortega, José
AU - García Vera, Victoria Eugenia
AU - Solak, Afonso Miguel
AU - Tenza Abril, Antonio José
T1 - Pore structure degradation of different cement mortars exposed to sulphuric acid
Y1 - 2019
SN - 2076-3417
UR - http://hdl.handle.net/10317/9263
AB - Acid attack causes the deterioration of construction material surfaces. The objective of this study was to investigate the degradation of different types of cement mortar in terms of variations in pore size distribution obtained by mercury intrusion porosimetry (MIP), mass loss, and compressive strength. The mortars were manufactured with nanosilica, zinc stearate, and an ethyl silicate coating. After curing (28 days), the samples were subjected to acid exposure for 90 days, immersed ina solution (3% w/w) of sulphuric acid (H2SO4). The results indicate that the mortars showed a more refined microstructure, with a higher proportion of smaller pores (<100 nm) compared to the control mortar. The 28-day and 90-day compressive strength variations of mortars were also determined by observing pronounced reduction due to the appearance of expansive compounds responsible for microcracking.
KW - Ciencia de los Materiales e Ingeniería Metalúrgica
KW - Física Aplicada
KW - Ingeniería Química
KW - Química-Física
KW - Microstructure
KW - Durability
KW - Acid rain
KW - Zinc stearate
KW - Ethyl silicate
KW - Nanosilica
KW - 22 Física
KW - 2307 Química Física
KW - 3312 Tecnología de Materiales
LA - eng
PB - MDPI
ER -