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The effect of combustion-derived particulates on the short-term modification of temperature and moisture loss from Portland Limestone

By
D. E. Searle
D. E. Searle
Room MI144, Construction & Infrastructure, School of Engineering and the Built Environment, University of Wolverhampton, Wolverhampton, West Midlands WV1 1SB, UK
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D. J. Mitchell
D. J. Mitchell
School of Applied Sciences, University of Wolverhampton, Wolverhampton, West Midlands WV1 1SB, UK
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Published:
January 01, 2010

Abstract

It is known that cyclic heating–cooling and wetting–drying can play a significant role in the long-term deterioration of building stone. These cycles can be modified by the deposition of atmospheric particulates, which darken surfaces, resulting in changes in the absorptivity and emissivity characteristics of the stone. The capacity of diesel and coal particulates to modify the moisture and temperature regime of Portland Limestone and Hollington Sandstone was investigated. Through a greater capacity to lower the albedo of the stone and enhance the absorption of radiant energy, diesel particulate was shown to significantly increase the rate of moisture loss, temperature, and rates of heating and cooling of Portland Limestone. With particulates from diesel combustion now becoming one of the dominant particulate types found in urban centres, potential implications for future stone conservation are discussed.

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Contents

Geological Society, London, Special Publications

Limestone in the Built Environment: Present-Day Challenges for the Preservation of the Past

B. J. Smith
B. J. Smith
Queen's University, Belfast, UK
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M. Gomez-Heras
M. Gomez-Heras
Queen's University, Belfast, UK Universidad Complutense de Madrid; Instituto de GeologÓa EconÓmica (CSIC-UCM), Spain
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H. A. Viles
H. A. Viles
Oxford University Centre for the Environment, UK
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J. Cassar
J. Cassar
University of Malta, Malta
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Geological Society of London
Volume
331
ISBN electronic:
9781862395794
Publication date:
January 01, 2010

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