RT journal article
T1 Modified Ethylsilicates as Efficient Innovative Consolidants for Sedimentary Rock
A1 Remzova, Monika
A1 Martínez Carrascosa, Luis Antonio
A1 Mosquera Díaz, María Jesús
A1 Rathousky, Jiri
A2 Química Física
K1 ethylsilicates
K1 consolidation
K1 nanoparticles
K1 physico-chemical properties
AB Although silicon alkoxides (especially ethylsilicates) have long been used as consolidantsof weathered stone monuments, their physical properties are not ideal. In this study, an innovativeprocedure for the consolidation of sedimentary rocks was developed that combines the use oforganometallic and alkylamine catalysts with the addition of well-defined nanoparticles exhibiting anarrow size distribution centered at ca. 10 nm. As a suitable test material, Pietra di Lecce limestonewas selected because of its color and problematic physico-chemical properties, such as rather lowhardness. Using the developed procedure, the mechanical and surface properties of the limestonewere improved without the unwanted over-consolidation of the surface layers of the stone, andany significant deterioration in the pore size distribution, water vapor permeability, or the stone’sappearance. The developed modified ethylsilicates penetrated deeper into the pore structure of thestone than the unmodified ones and increased the hardness of the treated material. The formedxerogels within the stone pores did not crack. Importantly, they did not significantly alter the naturalcharacteristics of the stone.
PB MDPI
SN 2079-6412
YR 2019
FD 2019-01
LK http://hdl.handle.net/10498/21346
UL http://hdl.handle.net/10498/21346
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026