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DC Field | Value | Language |
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dc.contributor.author | Grimaldi, Dulce Ma. | - |
dc.contributor.author | Pérez, Nora A. | - |
dc.contributor.author | Porter, Jennifer H. | - |
dc.date.accessioned | 2022-09-07T10:56:23Z | - |
dc.date.available | 2022-09-07T10:56:23Z | - |
dc.date.issued | 2012-10 | - |
dc.identifier.citation | Grimaldi, D. M., Pérez, N. A., & Porter, J. H. (2012, October). The preservation of sandstone reliefs at the archaeological site of Tajin, Mexico, using colloidal silica. 12th International congress on the deterioration and conservation of stone, New York. 12-22. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/101582 | - |
dc.description.abstract | The Archaeological Site of Tajín was the biggest and most important prehispanic city of the north coast of the Mexican Gulf; it reached its peak from the early ninth to the early thirteenth century C.E. Currently, it is surrounded by jungle and stands in the vicinity of areas of petroleum extraction. At this World Heritage Site several constructions have detailed religious and symbolic scenes carved on carbonate- cemented sandstone, which suffers from diverse deterioration, mainly weathering, flaking, and often extensive loss. The first plasters applied in the conservation of these reliefs were made of synthetic polymers or lime without good results. These materials differed in color, texture and porosity from the original material; they were difficult to apply and often stained the stone during application and after weathering. After time, they also suffered from cracking and detachment. Fills prepared with colloidal silica showed good initial results for the treatment of the sandstone reliefs subject to tropical environmental conditions and air pollution. Colloidal silica-based plasters have been tested for one year on site and have shown better endurance, stability, and appearance than the previously applied plasters. The plasters were also tested as protective surface coatings for the sandstone against environmental deterioration and acidic pollution at the site. Petrographic studies and nitrogen adsorption-desorption techniques were used to characterize the plasters in order to evaluate their long term durability and compatibility with the original sandstone, as well as future alteration. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | Columbia University | en_GB |
dc.rights | info:eu-repo/semantics/restrictedAccess | en_GB |
dc.subject | Tajín reliefs | en_GB |
dc.subject | Silica | en_GB |
dc.subject | Colloids | en_GB |
dc.subject | Stone -- Deterioration | en_GB |
dc.title | The preservation of sandstone reliefs at the archaeological site of Tajin, Mexico, using colloidal silica | en_GB |
dc.type | conferenceObject | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.bibliographicCitation.conferencename | International Congress on the Deterioration and Conservation of Stone | en_GB |
dc.bibliographicCitation.conferenceplace | New York, USA. 21-25/October/2012. | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
Appears in Collections: | Scholarly Works - FacBenCBH |
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