Hazards in cultural heritage sites: Early detection of biological colonization of the Roman Ruins of Tróia EVALUATED
Anthropogenic and natural risks can cause severe damage to cultural heritage sites and structures. The project STORM deals with these hazards on-site, where it is especially important to analyze the early detection of biological colonization on wall paintings, frescos and stuccoes. This deterioration is an undesirable change caused by microorganisms which may contain chlorophyll, an aspect to carefully observe with specified systems. Four systems from three case studies, based on the induced fluorescence technique of spectroscopy, are discussed and compared on three aspects: technical qualities, framework, and practical use and outcome. The results and comparison show that the SFS sensor, used at the STORM project, is in general more effective, compact and cost-effective for the early detection of biological colonization than the LIF sensor, the Biofinder and the chlorophyll fluorescence technique with PAM. All systems have a high future potential, but more research needs to be done for the further improvement and development of detecting early biological colonization in engineering and cultural heritage. In addition, specific modifications, necessary changes and different purposes for all the systems are therefore discussed in this dissertation. A future use could be to use them in detecting biological colonization on surfaces in civil engineering, like concrete, stone and metal. This is applied to structures like buildings, dams, silos, cooling towers, bridges, tanks, pipelines and sewers.
Junho 27, 2018, 11:0
Obra sujeita a Direitos de Autor