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Evaluation of corrective measures implemented for the preventive conservation of fresco paintings in Ariadne's house (Pompeii, Italy).

Merello P, García-Diego FJ, Zarzo M - Chem Cent J (2013)

Bottom Line: Data recorded in 2008 and 2010 were compared.As a result, the daily thermohygrometric variations resulted less pronounced in 2010, with a reduction of approximately 4°C, which is favorable for the preservation of mural paintings.In the room with four walls, the daily fluctuations also decreased about 4°C.

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Affiliation: Department of Applied Physics (UD Agriculture Engineering), Universitat Politècnica de València, Camino de Vera s/n, Valencia, 46022, Spain. fjgarcid@upvnet.upv.es.

ABSTRACT

Background: A microclimate monitoring study was conducted in 2008 aimed at assessing the conservation risks affecting the valuable wall paintings decorating Ariadne's House (Pompeii, Italy). It was found that thermohygrometric conditions were very unfavorable for the conservation of frescoes. As a result, it was decided to implement corrective measures, and the transparent polycarbonate sheets covering three rooms (one of them delimited by four walls and the others composed of three walls) were replaced by opaque roofs. In order to examine the effectiveness of this measure, the same monitoring system comprised by 26 thermohygrometric probes was installed again in summer 2010. Data recorded in 2008 and 2010 were compared.

Results: Microclimate conditions were also monitored in a control room with the same roof in both years. The average temperature in this room was lower in 2010, and it was decided to consider a time frame of 18 summer days with the same mean temperature in both years. In the rooms with three walls, the statistical analysis revealed that the diurnal maximum temperature decreased about 3.5°C due to the roof change, and the minimum temperature increased 0.5°C. As a result, the daily thermohygrometric variations resulted less pronounced in 2010, with a reduction of approximately 4°C, which is favorable for the preservation of mural paintings. In the room with four walls, the daily fluctuations also decreased about 4°C. Based on the results, other alternative actions are discussed aimed at improving the conservation conditions of wall paintings.

Conclusions: The roof change has reduced the most unfavorable thermohygrometric conditions affecting the mural paintings, but additional actions should be adopted for a long term preservation of Pompeian frescoes.

No MeSH data available.


Related in: MedlinePlus

Plan of Ariadne’s house displaying the four rooms under study. Parallel sloping lines define the roofed area. A more detailed plan of the whole house with pictures of each room is available in[22].
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Figure 1: Plan of Ariadne’s house displaying the four rooms under study. Parallel sloping lines define the roofed area. A more detailed plan of the whole house with pictures of each room is available in[22].

Mentions: Although most interior walls were originally ornamented with frescoes, the paintings have suffered severe damages since the excavation of Ariadne’s house in 1832–1835. At present, original frescoes are only conserved in three rooms that were sheltered with transparent polycarbonate sheets in the 1970s (coded as 1–3 in Figure 1), and in one additional lodging (room 4, apsidal exedra) that was covered in the 1950s with a roof of ceramic tiles (see[22], web link to room number 29). Room 3 (exedra, coded as lodging 18 in[22]) displays a mosaic of Hellenistic inspiration on the floor (84 × 77 cm) protected with a glass box. The mosaic is probably from the second century BC, and the rest of the floor is paved with tiles of a different style (first century AD). Room 1 (west side of atrium, lodging 6 in[22]) is delimited by three walls, as well as rooms 1 and 4. By contrast, room 2 (oecus, coded as 12 in[22]) is composed of four walls.


Evaluation of corrective measures implemented for the preventive conservation of fresco paintings in Ariadne's house (Pompeii, Italy).

Merello P, García-Diego FJ, Zarzo M - Chem Cent J (2013)

Plan of Ariadne’s house displaying the four rooms under study. Parallel sloping lines define the roofed area. A more detailed plan of the whole house with pictures of each room is available in[22].
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3672094&req=5

Figure 1: Plan of Ariadne’s house displaying the four rooms under study. Parallel sloping lines define the roofed area. A more detailed plan of the whole house with pictures of each room is available in[22].
Mentions: Although most interior walls were originally ornamented with frescoes, the paintings have suffered severe damages since the excavation of Ariadne’s house in 1832–1835. At present, original frescoes are only conserved in three rooms that were sheltered with transparent polycarbonate sheets in the 1970s (coded as 1–3 in Figure 1), and in one additional lodging (room 4, apsidal exedra) that was covered in the 1950s with a roof of ceramic tiles (see[22], web link to room number 29). Room 3 (exedra, coded as lodging 18 in[22]) displays a mosaic of Hellenistic inspiration on the floor (84 × 77 cm) protected with a glass box. The mosaic is probably from the second century BC, and the rest of the floor is paved with tiles of a different style (first century AD). Room 1 (west side of atrium, lodging 6 in[22]) is delimited by three walls, as well as rooms 1 and 4. By contrast, room 2 (oecus, coded as 12 in[22]) is composed of four walls.

Bottom Line: Data recorded in 2008 and 2010 were compared.As a result, the daily thermohygrometric variations resulted less pronounced in 2010, with a reduction of approximately 4°C, which is favorable for the preservation of mural paintings.In the room with four walls, the daily fluctuations also decreased about 4°C.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Applied Physics (UD Agriculture Engineering), Universitat Politècnica de València, Camino de Vera s/n, Valencia, 46022, Spain. fjgarcid@upvnet.upv.es.

ABSTRACT

Background: A microclimate monitoring study was conducted in 2008 aimed at assessing the conservation risks affecting the valuable wall paintings decorating Ariadne's House (Pompeii, Italy). It was found that thermohygrometric conditions were very unfavorable for the conservation of frescoes. As a result, it was decided to implement corrective measures, and the transparent polycarbonate sheets covering three rooms (one of them delimited by four walls and the others composed of three walls) were replaced by opaque roofs. In order to examine the effectiveness of this measure, the same monitoring system comprised by 26 thermohygrometric probes was installed again in summer 2010. Data recorded in 2008 and 2010 were compared.

Results: Microclimate conditions were also monitored in a control room with the same roof in both years. The average temperature in this room was lower in 2010, and it was decided to consider a time frame of 18 summer days with the same mean temperature in both years. In the rooms with three walls, the statistical analysis revealed that the diurnal maximum temperature decreased about 3.5°C due to the roof change, and the minimum temperature increased 0.5°C. As a result, the daily thermohygrometric variations resulted less pronounced in 2010, with a reduction of approximately 4°C, which is favorable for the preservation of mural paintings. In the room with four walls, the daily fluctuations also decreased about 4°C. Based on the results, other alternative actions are discussed aimed at improving the conservation conditions of wall paintings.

Conclusions: The roof change has reduced the most unfavorable thermohygrometric conditions affecting the mural paintings, but additional actions should be adopted for a long term preservation of Pompeian frescoes.

No MeSH data available.


Related in: MedlinePlus