Portable in practice: investigations using portable instrumentation for materials analysis and mapping of decorated arch
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Portable in practice: investigations using portable instrumentation for materials analysis and mapping of decorated architectural surfaces in the tablinum of the House of the Bicentenary at Herculaneum. Authors: Kiernan Graves1, David Carson1, Ilaria Catapano4, Giacomo Chiari1, Gianluca Gennarelli4, Arlen Heginbotham2, Nicola Masini5, Francesca Piqué 3, Maria Sileo5 and Leslie Rainer1 1 Getty Conservation Institute (GCI) 1200 Getty Center Drive, Los Angeles, CA 90049 USA 2 J. Paul Getty Museum, 1200 Getty Center Drive, Los Angeles, CA 90049 USA 3 University of Applied Sciences and Arts of Southern Switzerland (SUPSI), Via Pobiette 11, 6928 Manno, Switzerland 4 Institute for Electromagnetic Sensing of the Environment (IREA), National Research Council of Italy (CNR), Via Diocleziano 328, I-80124, Naples, Italy 5 Institute for Archaeological and Monumental Heritage (IBAM), National Research Council of Italy (CNR), C. da S. Loja, 85050 Tito Scalo (PZ). Italy ABSTRACT The conservation of the architectural surfaces in the tablinum of the House of the Bicentenary at the ancient Roman site of Herculaneum is a collaborative project of the Getty Conservation Institute, the Herculaneum Conservation Project and the Soprintendenza Pompeii. The tablinum was selected as a case study given the significance, beauty, and severe deterioration of its decorated surfaces. A multi-disciplinary team with a wide range of expertise, comprised of conservators, chemists, geo-physicists, engineers, and conservation scientists, worked in partnership across a number of institutions with the objective to study the wall paintings in the tablinum. Scientists and conservators worked together to test the feasibility of portable techniques and in situ investigations to better understand Roman painting technology; identify previous restoration materials; determine the presence of alteration products; and characterize deterioration mechanisms commonly found on architectural surfaces at archaeological sites of the Vesuvian Region. The collection and interpretation of the instrumental data has been critical to the design and implementation of appropriate passive and remedial interventions to stabilize the architectural surfaces and mitigate deterioration. The paper will present the results of the investigations using portable instrumentation along with a discussion of the capabilities and limitations of each technique and the practical implications of their use for architectural surfaces on archaeological sites. INTRODUCTION The conservation of architectural surfaces in the tablinum (or reception room) of the ancient Roman House of the Bicentenary at the archeological site of Herculaneum is a pilot project being carried out by the Getty Conservation Institute (GCI) in partnership with the Parco Archeologico di Ercolano (previously part of the Soprintendenza Pompei) and the Herculaneum Conservation Project (HCP). The HCP team has been working on the structural conservation of the house in parallel to the GCI research on the wall paintings. The wall painting
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