By Larry L. St. Clair, Mark R. D. Seaward (auth.), Larry L. St.Clair, Mark R. D. Seaward (eds.)
This is a well timed quantity in view of the enormous curiosity presently proven within the upkeep of our cultural historical past, and the large and starting to be literature at the topic. regrettably, the latter is to be present in a wide selection of released resources, a few geared toward a truly particular readership and accordingly no longer all that obtainable to people who want this source. the current quantity attracts jointly a spectrum of biodeterioration paintings from the world over to supply an summary of the fabrics tested and the methodologies hired to clarify the character of the issues, in addition to an intensive and present bibliographical source on lichen biodeterioration. Biodeterioration of historic and culturally very important stone substrata is a posh challenge to be addressed. effortless, secure suggestions are easily no longer to be had to be handled by way of except quite a lot of services. profitable solution of this factor will necessarily require a multidisciplinary attempt, the place biologists paintings in shut cooperation with ecologists, geologists, geochemists, crystallographers, cultural estate conservators, archaeologists, anthropologists, and historians which will suggest the best administration scheme. the benefit of this process is clear: multidisciplinary administration groups with solid management can ask extra acceptable questions whereas constructing even more considerate and expert decisions.
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Additional info for Biodeterioration of Stone Surfaces: Lichens and Biofilms as Weathering Agents of Rocks and Cultural Heritage
No lichen regrowth was visible. 40 Biodeterioration ofRock Surfaces Polybor acted more slowly than the TBTO-CTMQ or the CTMQ alone. The effects of this biocide were not visible immediately following application but biocidal activity appeared gradually and continued for 2-3 years. Denuding of the stone was not as drastic an effect as was produced by the TBTO treatments. The copper biocides, Polybor, CTMQ, and CTMQ + TBTO were used to treat another wall in the same area. Some of the stone surfaces, which were partially covered with lichens and fungi, showed distinct changes within 24 hours.
In addition, much of the masonry and stucco immediately below the surface is damp throughout the year and this enhances the growth of microflora and reduces resistance to mechanical degradation. Although it has been stated that the existence of a microfloral layer on stone provides a stabilizing, humid environment and limits the loss of stone surface, degradation below the surface may still be in progress and, eventually, the biomass and surface layers will be detached and lost. 3. Limestone Stabilization Studies at a Maya Site in Belize 25 One widely reported means of stabilizing building materials of this type has been through consolidation procedures that involve impregnation of the porous stone with appropriate consolidants.
REFERENCES Crankovic, B. (1985) Changes in Porous and Soft Limestone under the Influence of Rainwater. 2. Elsevier Science Publishers, Amsterdam, pp. 229-242. F. (1928). Maya Cities: A Record of Exploration and Adventure in Middle America. Scribners. New York. , ed. (1992) Warlords and Maizemen. Cubola Productions, Benque Viejo del Carmen, Belize. , and Kumar, R. (2002) Conservation of Maya Limestone at Xunantunich, Belize: Final Report. Getty Conservation Institute, Los Angeles. E. Jr. (1980) Control of Biological Growths on Mayan Archaeological Ruins in Guatemala and Honduras.
Biodeterioration of Stone Surfaces: Lichens and Biofilms as Weathering Agents of Rocks and Cultural Heritage by Larry L. St. Clair, Mark R. D. Seaward (auth.), Larry L. St.Clair, Mark R. D. Seaward (eds.)