Evaluación de los efectos derivados de las intervenciones de restauración realizadas sobre material pétreo :Teatro romano y Casa del Mitreo de Mérida

Restoration treatments on UNESCO-listed Roman heritage sites often cause irreversible damage or undesirable alterations, yet systematic evaluations of their long-term effects are rare. This study reveals that while protective treatments (e.g., siloxane-based hydrofugants) are generally more effective than consolidants (e.g., ethyl silicate), both show limited mid-term durability—declining after two years—with exceptions for acrylic resins on mural paintings. All treatments induce negative side effects, such as darkening, yellowing, and increased surface roughness, which heighten material alterability. Among the tested products, a novel experimental nanoproduct (UCAT-10P©) demonstrates the best balance of efficacy and reduced adverse impacts. The research employs portable, non-destructive techniques—including LIBS, infrared spectroscopy, and thermography—to assess treatments in situ, addressing gaps in laboratory-centric approaches by accounting for fluctuating environmental variables. Findings underscore the need for refined protocols to mitigate harm while preserving archaeological integrity.

Pérez Ema, N. Evaluación de los efectos derivados de las intervenciones de restauración realizadas sobre material pétreo :Teatro romano y Casa del Mitreo de Mérida. https://doi.org/10.20868/upm.thesis.48350