RT journal article
T1 Consolidation of artificial decayed portland cement mortars with an alkoxysilane-based impregnation treatment and its influence on mineralogy and pore structure
A1 Garcia-Lodeiro, Inés
A1 Zarzuela Sánchez, Rafael
A1 Mosquera Díaz, María Jesús
A1 Blanco-Varela, María Teresa
A2 Química Física
K1 Consolidation
K1 Alkoxysilane
K1 C-S-H gel
K1 Porosity
K1 Concrete
K1 Mechanical Strength
AB Surface treatments, especially hydrophobic agents to prevent water ingress and consolidants able to fill decay- induced cracks, are often proposed as a method for preserving stone cultural heritage, however its use to pro- tect concrete heritage is much less common. New products, specifically designed for concrete, have been developed. These products are based on alkoxysilanes that interact directly with the products of portland cement (OPC) hydration (essentially Ca(OH)2 and C-S-H) to generate additional C-S-H gel. This study assesses the effect of an impregnation treatment, based on alkosysilanes, on artificially decayedcement mortars, in terms of product penetration depth, changes in the porosity of mortars and changes in its mechanical strengths. Reduced porosity and enhanced mechanical strength attested to treatment efficacy. Substrate porosity and pore size distribution were not the only factors found to condition treatment effectiveness, however, mineralogical changes caused by the deterioration processes (such as the presence or absence of portlandite, or the presence of salts) modify the sol gelling time and the substrate surface energy, impacting treatment penetration depth.
SN 0950-0618
YR 2021
FD 2021-08-25
LK http://hdl.handle.net/10498/25620
UL http://hdl.handle.net/10498/25620
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026