RT journal article
T1 Validation of alkoxysilane-based protective treatments for increasing service life of cementitious materials under different weathering conditions
A1 Zarzuela Sánchez, Rafael
A1 Luna Aguilera, Manuel Jesús
A1 Gemelli, Giada María Chiara
A1 González-Coneo, Jorge
A1 Garcia-Lodeiro, Inés
A1 Blanco-Varela, María Teresa
A1 Mosquera Díaz, María Jesús
A2 Química Física
K1 Alkoxysilane
K1 Cement
K1 Durability
K1 Mortar
K1 Protection
K1 Surface treatment
AB Gradual degradation of cementitious materials by exposure to the environment decreases the lifespan of buildings, increasing maintenance andrepair costs. Surface treatments based on alkoxysilanes may prevent weathering effects and repair onset damages, though little attention is paid to how the physical-chemical alterations caused by weathering affect their performance. This work reports a comprehensive characterization/validation of an alkoxysilane-based protective treatment on a mortar subjected to different artificial aging processes (freeze-thaw, thermal cycles, carbonation and chlorides), including measurements of water transport, mechanical properties, reaction products and durability under freeze-thaw and sulfate exposure cycles. Formation of compact silica and C-S-H gel structures decreases porosity and water absorption rate with minimal effect on vapor permeability. Bulk mechanical reinforcement and waterproofing are substantially limited on freeze-thaw aged mortars, whereas surface hardness is barely increased for carbonated mortars. These properties were found to effectively increase the mortar resistance against sulfate and freeze-thaw induced damages.
PB Elsevier Ltd
SN 2666-1659
YR 2023
FD 2023
LK http://hdl.handle.net/10498/31692
UL http://hdl.handle.net/10498/31692
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026