The durability of stone materials in cultural heritage sites is a major concern, especially in the face of environmental factors that promote water infiltration and degradation. This study evaluates the effectiveness of stone (marble specimens, porous stone specimens and limestone specimens) hydrophobicity using contact angle. Especially, the stone specimens were treated by several carbonatogenic bacteria, isolated by stone monuments of Greece. The aim of this study is to investigate the water repellency of these different biomineralization treatments. Depending on the lithotype to which the biomineralization treatments were applied, an analysis of the changes in contact angles was performed. The research provides insight into the hydrophobic behavior induced by various microbial treatments. The study follows the standard procedures outlined in UNI EN 15802:2010 for measuring static contact angles and examines the impact of different bacterial strains on the wettability of stone materials. Additionally, this research discusses the potential application of microorganisms and bacteria treatments in conservation science, presenting a novel approach for marble, porous stone and limestone preservation.

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Assessment of the Hydrophobicity of Stone Surfaces After Bioconsolidation Treatments

  • Athanasios Katsouras,
  • Vasiliki Kirykou,
  • Apostolos Avgeropoulos,
  • Ekaterini Delegou,
  • Diomi Mamma,
  • Fragiskos Kolisis,
  • Antonia Moropoulou

摘要

The durability of stone materials in cultural heritage sites is a major concern, especially in the face of environmental factors that promote water infiltration and degradation. This study evaluates the effectiveness of stone (marble specimens, porous stone specimens and limestone specimens) hydrophobicity using contact angle. Especially, the stone specimens were treated by several carbonatogenic bacteria, isolated by stone monuments of Greece. The aim of this study is to investigate the water repellency of these different biomineralization treatments. Depending on the lithotype to which the biomineralization treatments were applied, an analysis of the changes in contact angles was performed. The research provides insight into the hydrophobic behavior induced by various microbial treatments. The study follows the standard procedures outlined in UNI EN 15802:2010 for measuring static contact angles and examines the impact of different bacterial strains on the wettability of stone materials. Additionally, this research discusses the potential application of microorganisms and bacteria treatments in conservation science, presenting a novel approach for marble, porous stone and limestone preservation.