Microwave Treatment of Stone Surfaces for the Devitalization of Biodeteriogens
The experimental work described in this paper is aimed at evaluating the possibility of applying microwave heating to a restoration project. The technique involves the application of microwaves to stone surfaces affected by biodeterioration. Results showed that the pests were completely devitalised....
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Bologna
2019-12-01
|
| Series: | Conservation Science in Cultural Heritage |
| Subjects: | |
| Online Access: | https://conservation-science.unibo.it/article/view/10674 |
| _version_ | 1811295031852531712 |
|---|---|
| author | Nicola Chiacchio Luigi Guerriero Margherita Cicala Bruno Bisceglia |
| author_facet | Nicola Chiacchio Luigi Guerriero Margherita Cicala Bruno Bisceglia |
| author_sort | Nicola Chiacchio |
| collection | DOAJ |
| description | The experimental work described in this paper is aimed at evaluating the possibility of applying microwave heating to a restoration project. The technique involves the application of microwaves to stone surfaces affected by biodeterioration. Results showed that the pests were completely devitalised. The materials chosen for the survey were yellow and grey tuff. Samples of both tuffs were taken in the area of agro nocerino-sarnese and samples of lime mortar and brick were taken from a ruin located in Saint Eustachio (AV). The methodology consists of two phases: in the first, samples of material are placed in a reverberation chamber and treated by varying the parameters of power and exposure time; in the second, they underwent chemical-physical analysis aimed at establishing whether the treatment had induced aesthetic and/or structural alterations. The procedure was performed both on intact samples and on powdered samples for further analysis. Specifically selected and treated samples were subjected to colorimetric analysis, thermogravimetric analysis, of x-ray diffraction, infrared spectroscopy, SEM, and analysis of transport properties and compressive strength. Results from the chemical and structural analyses relating to the samples treated with the protocol showed no differences between the treated and untreated material. The only difference between the two types of material used related to the absorption capacity of water after treatment. From this, it can be deduced that the heating of stone materials using microwaves devitalizes pests, while leaving the substrate unaltered and the microstructure unaffected by any change. |
| first_indexed | 2024-04-13T05:26:26Z |
| format | Article |
| id | doaj.art-259f5e0186d54f3dab4db92a66ebdc88 |
| institution | Directory Open Access Journal |
| issn | 1974-4951 1973-9494 |
| language | English |
| last_indexed | 2024-04-13T05:26:26Z |
| publishDate | 2019-12-01 |
| publisher | University of Bologna |
| record_format | Article |
| series | Conservation Science in Cultural Heritage |
| spelling | doaj.art-259f5e0186d54f3dab4db92a66ebdc882022-12-22T03:00:34ZengUniversity of BolognaConservation Science in Cultural Heritage1974-49511973-94942019-12-0119126728210.6092/issn.1973-9494/106748951Microwave Treatment of Stone Surfaces for the Devitalization of BiodeteriogensNicola Chiacchio0Luigi Guerriero1Margherita Cicala2Bruno Bisceglia3Department of Architecture and Industrial Design, University of Campania “Luigi Vanvitelli”, NaplesDepartment of Architecture and Industrial Design, University of Campania “Luigi Vanvitelli”, NaplesDepartment of Architecture and Industrial Design, University of Campania “Luigi Vanvitelli”, NaplesDepartment of Industrial Engineering, University of SalernoThe experimental work described in this paper is aimed at evaluating the possibility of applying microwave heating to a restoration project. The technique involves the application of microwaves to stone surfaces affected by biodeterioration. Results showed that the pests were completely devitalised. The materials chosen for the survey were yellow and grey tuff. Samples of both tuffs were taken in the area of agro nocerino-sarnese and samples of lime mortar and brick were taken from a ruin located in Saint Eustachio (AV). The methodology consists of two phases: in the first, samples of material are placed in a reverberation chamber and treated by varying the parameters of power and exposure time; in the second, they underwent chemical-physical analysis aimed at establishing whether the treatment had induced aesthetic and/or structural alterations. The procedure was performed both on intact samples and on powdered samples for further analysis. Specifically selected and treated samples were subjected to colorimetric analysis, thermogravimetric analysis, of x-ray diffraction, infrared spectroscopy, SEM, and analysis of transport properties and compressive strength. Results from the chemical and structural analyses relating to the samples treated with the protocol showed no differences between the treated and untreated material. The only difference between the two types of material used related to the absorption capacity of water after treatment. From this, it can be deduced that the heating of stone materials using microwaves devitalizes pests, while leaving the substrate unaltered and the microstructure unaffected by any change.https://conservation-science.unibo.it/article/view/10674disinfestationpyroclastic lithotypesstone materialsstructural analysis |
| spellingShingle | Nicola Chiacchio Luigi Guerriero Margherita Cicala Bruno Bisceglia Microwave Treatment of Stone Surfaces for the Devitalization of Biodeteriogens Conservation Science in Cultural Heritage disinfestation pyroclastic lithotypes stone materials structural analysis |
| title | Microwave Treatment of Stone Surfaces for the Devitalization of Biodeteriogens |
| title_full | Microwave Treatment of Stone Surfaces for the Devitalization of Biodeteriogens |
| title_fullStr | Microwave Treatment of Stone Surfaces for the Devitalization of Biodeteriogens |
| title_full_unstemmed | Microwave Treatment of Stone Surfaces for the Devitalization of Biodeteriogens |
| title_short | Microwave Treatment of Stone Surfaces for the Devitalization of Biodeteriogens |
| title_sort | microwave treatment of stone surfaces for the devitalization of biodeteriogens |
| topic | disinfestation pyroclastic lithotypes stone materials structural analysis |
| url | https://conservation-science.unibo.it/article/view/10674 |
| work_keys_str_mv | AT nicolachiacchio microwavetreatmentofstonesurfacesforthedevitalizationofbiodeteriogens AT luigiguerriero microwavetreatmentofstonesurfacesforthedevitalizationofbiodeteriogens AT margheritacicala microwavetreatmentofstonesurfacesforthedevitalizationofbiodeteriogens AT brunobisceglia microwavetreatmentofstonesurfacesforthedevitalizationofbiodeteriogens |