Volcanic tuff rocks as natural building stone in the cultural heritage of Mexico. Geological, geochemical and petrophysical studies with implementation to their deterioriation, conservation and restoration

火山凝灰岩是墨西哥文化遗产中的天然建筑石材。

• 批准号: 410414016
• 负责人: Professor Dr. Siegfried Siegesmund
• 金额: --
• 依托单位: Abteilung Strukturgeologie und Geodynamik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/410414016?language=en
• 关键词: Volcanic; tuff; rocks; natural; building

With the obtained information regarding the different petrographical and petrophysical characteristics of the studied volcanic tuff rocks it is possible to deduce which of these characteristics play an important role in the resistance or the susceptibility of the rock against the weathering. Additionally it is also possible to reconstruct the different climatic conditions applied on a particular tuff rock type and reproduce the decay of that in the rocks in the short- medium- and long-term.Experimental and systematical expansion and swelling pressure measurement under contrasting moisture conditions will allow us to deduce which tuff is more susceptible to decay under particular expansion and swellings pressure conditions.If the main causes of deterioration are known, it is possible to anticipate and predict what kind of rock is more susceptible to decay and therefore take the necessary measures for their maintenance and conservation.If the damage of the building stone in the construction is large and they need to be restored, it will be possible to take the necessary measures to reduce the expansion and swelling pressure and, if it is necessary to replace material, it will be possible to consult a catalog of different rocks that could be favorable according to their characteristics for replacement without altering or changing the historical value of heritage in Mexico.

根据所研究的火山凝灰岩的不同岩石学和岩石物理特征，可以推断出哪些特征在岩石的抗风化性或易风化性中起重要作用。此外，还可以重建应用于特定凝灰岩类型的不同气候条件，并在短期、中期和长期内再现其在岩石中的衰变。在对比湿度条件下的实验和系统的膨胀和膨胀压力测量将使我们能够推断出哪种凝灰岩在特定的膨胀和膨胀压力条件下更容易腐烂。如果知道变质的主要原因，就有可能预测和预测什么样的岩石更容易腐烂，从而采取必要的措施对其进行维护和保护。如果建筑石材在施工中损坏较大，需要修复，则可以采取必要的措施来减少膨胀和膨胀压力，如果需要更换材料，则可以根据不同岩石的特性参考不同岩石的目录，在不改变或改变墨西哥遗产的历史价值的情况下进行更换。