Effectiveness of Preservative Treatmentson Coloured Ruditic Building Stones

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5 Citazioni (Scopus)

Abstract

The dark grey Breccia di Billiemi and the Ammonitico Rosso of Piana degli Albanesi, twocoloured stones widely used in monuments both outdoor and indoor in Sicily, undergo significant decay as effect of weathering: colour change and development of surface microcracks which affect not only the chromatic aspect but also the state of aggregation. In a previous study (Fracture and Failure of Natural Building Stones, 2006, Springer, Dordrecht, The Netherlands: 329), such effects were successfully reproduced on laboratory samples by means of artificial accelerated weathering and thedifferent response of veins and grains to the ageing agents was related to the microstructure of stones. In this study, the effect of accelerated washout and acid etching is evaluated both on untreatedsamples and after the application of four commercial preservative products. The development of decay phenomena is monitored by means of weight measurements and image analysis, coupled with optical microscopy, the last evidencing a selectivity in the effectiveness of treatments on the differenttextural components of the lithotypes. The effect of treatments on the stones is also investigated by contact angle measurements on different areas.
Lingua originaleEnglish
pagine (da-a)424-432
Numero di pagine9
RivistaStrain
Volume45
Stato di pubblicazionePublished - 2008

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Weathering
Microcracks
Weighing
Angle measurement
Image analysis
Contact angle
Optical microscopy
Etching
Agglomeration
Aging of materials
Color
Microstructure
Acids

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering

Cita questo

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title = "Effectiveness of Preservative Treatmentson Coloured Ruditic Building Stones",
abstract = "The dark grey Breccia di Billiemi and the Ammonitico Rosso of Piana degli Albanesi, twocoloured stones widely used in monuments both outdoor and indoor in Sicily, undergo significant decay as effect of weathering: colour change and development of surface microcracks which affect not only the chromatic aspect but also the state of aggregation. In a previous study (Fracture and Failure of Natural Building Stones, 2006, Springer, Dordrecht, The Netherlands: 329), such effects were successfully reproduced on laboratory samples by means of artificial accelerated weathering and thedifferent response of veins and grains to the ageing agents was related to the microstructure of stones. In this study, the effect of accelerated washout and acid etching is evaluated both on untreatedsamples and after the application of four commercial preservative products. The development of decay phenomena is monitored by means of weight measurements and image analysis, coupled with optical microscopy, the last evidencing a selectivity in the effectiveness of treatments on the differenttextural components of the lithotypes. The effect of treatments on the stones is also investigated by contact angle measurements on different areas.",
keywords = "coloured stones, luminosity, preservatives, weathering",
author = "Giovanni Rizzo and Bartolomeo Megna and Laura Ercoli",
year = "2008",
language = "English",
volume = "45",
pages = "424--432",
journal = "Strain",
issn = "0039-2103",
publisher = "Wiley-Blackwell",

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TY - JOUR

T1 - Effectiveness of Preservative Treatmentson Coloured Ruditic Building Stones

AU - Rizzo, Giovanni

AU - Megna, Bartolomeo

AU - Ercoli, Laura

PY - 2008

Y1 - 2008

N2 - The dark grey Breccia di Billiemi and the Ammonitico Rosso of Piana degli Albanesi, twocoloured stones widely used in monuments both outdoor and indoor in Sicily, undergo significant decay as effect of weathering: colour change and development of surface microcracks which affect not only the chromatic aspect but also the state of aggregation. In a previous study (Fracture and Failure of Natural Building Stones, 2006, Springer, Dordrecht, The Netherlands: 329), such effects were successfully reproduced on laboratory samples by means of artificial accelerated weathering and thedifferent response of veins and grains to the ageing agents was related to the microstructure of stones. In this study, the effect of accelerated washout and acid etching is evaluated both on untreatedsamples and after the application of four commercial preservative products. The development of decay phenomena is monitored by means of weight measurements and image analysis, coupled with optical microscopy, the last evidencing a selectivity in the effectiveness of treatments on the differenttextural components of the lithotypes. The effect of treatments on the stones is also investigated by contact angle measurements on different areas.

AB - The dark grey Breccia di Billiemi and the Ammonitico Rosso of Piana degli Albanesi, twocoloured stones widely used in monuments both outdoor and indoor in Sicily, undergo significant decay as effect of weathering: colour change and development of surface microcracks which affect not only the chromatic aspect but also the state of aggregation. In a previous study (Fracture and Failure of Natural Building Stones, 2006, Springer, Dordrecht, The Netherlands: 329), such effects were successfully reproduced on laboratory samples by means of artificial accelerated weathering and thedifferent response of veins and grains to the ageing agents was related to the microstructure of stones. In this study, the effect of accelerated washout and acid etching is evaluated both on untreatedsamples and after the application of four commercial preservative products. The development of decay phenomena is monitored by means of weight measurements and image analysis, coupled with optical microscopy, the last evidencing a selectivity in the effectiveness of treatments on the differenttextural components of the lithotypes. The effect of treatments on the stones is also investigated by contact angle measurements on different areas.

KW - coloured stones

KW - luminosity

KW - preservatives

KW - weathering

UR - http://hdl.handle.net/10447/43383

M3 - Article

VL - 45

SP - 424

EP - 432

JO - Strain

JF - Strain

SN - 0039-2103

ER -