Capasso Ilaria, Colella Abner, Iucolano Fabio
Department of Engineering and Geology, University of Chieti-Pescara "G. d'Annunzio", Viale Pindaro 42, 65122 Pescara, Italy.
DiSTAR, Department of Earth Sciences, Environment and Resource, University of Naples Federico II, Via Vicinale Cupa Cintia 21, 80126 Naples, Italy.
Materials (Basel). 2024 Jul 17;17(14):3541. doi: 10.3390/ma17143541.
The preservation of cultural heritage, particularly historical stone structures, represents a very challenging matter due to several environmental and anthropogenic factors. Vicenza stone, a calcareous rock known for its historical significance and widespread use in architectural masterpieces, requires significant attention for conservation. In fact, as the demand for sustainable and effective preservation methods intensifies, the exploration of innovative consolidation strategies becomes essential. To this end, inorganic consolidants, based on alkaline silicate formulations and nano-silica, were explored for their promising performance in enhancing the surface properties and chemical stability of Vicenza stone. In particular, the durability of treated and untreated Vicenza stone samples was evaluated by means of accelerated weathering tests such as freeze-thaw cycles, salt crystallization and simulation of acid rain. The experimental results revealed that Vicenza stone is very resistant to the effects of freeze-thaw cycles and acid rain; both the accelerated weathering tests did not show significant differences between treated and untreated VS samples. A different behavior was detected for the test for resistance to salt crystallization, whose findings led us to deduce that, for this kind of degradation, it is possible to observe a more beneficial effect of the consolidation treatments on the stone durability.
由于多种环境和人为因素，文化遗产的保护，尤其是历史悠久的石结构建筑的保护，是一项极具挑战性的任务。维琴察石是一种钙质岩石，因其历史意义以及在建筑杰作中的广泛应用而闻名，其保护需要受到高度关注。事实上，随着对可持续且有效保护方法的需求不断增加，探索创新的加固策略变得至关重要。为此，基于碱性硅酸盐配方和纳米二氧化硅的无机加固剂因其在增强维琴察石表面性能和化学稳定性方面的良好表现而被研究。特别是，通过加速老化试验，如冻融循环、盐结晶和酸雨模拟，对处理过和未处理的维琴察石样品的耐久性进行了评估。实验结果表明，维琴察石对冻融循环和酸雨的影响具有很强的抵抗力；这两种加速老化试验在处理过和未处理的维琴察石样品之间均未显示出显著差异。对于抗盐结晶试验，观察到了不同的结果，其结果使我们推断，对于这种降解类型，可以观察到加固处理对石材耐久性更有益的影响。
