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Book Chapter

Replacement stones for Lede stone in Belgian historical monuments

By
Tim De Kock
Tim De Kock
Department of Geology and Soil Science and Centre for X-ray Tomography (UGCT), Faculty of Sciences, Ghent University, Krijgslaan 281/S8, 9000 Ghent, Belgium
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Jan Dewanckele
Jan Dewanckele
Department of Geology and Soil Science and Centre for X-ray Tomography (UGCT), Faculty of Sciences, Ghent University, Krijgslaan 281/S8, 9000 Ghent, Belgium
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Marijn Boone
Marijn Boone
Department of Geology and Soil Science and Centre for X-ray Tomography (UGCT), Faculty of Sciences, Ghent University, Krijgslaan 281/S8, 9000 Ghent, BelgiumUnit Sustainable Materials Management, VITO, Mol, Belgium
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Geert De Schutter
Geert De Schutter
Magnel Laboratory for Concrete Research, Department of Structural Engineering, Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
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Patric Jacobs
Patric Jacobs
Department of Geology and Soil Science and Centre for X-ray Tomography (UGCT), Faculty of Sciences, Ghent University, Krijgslaan 281/S8, 9000 Ghent, Belgium
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Veerle Cnudde
Veerle Cnudde
Department of Geology and Soil Science and Centre for X-ray Tomography (UGCT), Faculty of Sciences, Ghent University, Krijgslaan 281/S8, 9000 Ghent, Belgium
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Published:
January 01, 2014

Abstract

The Lede stone (Lutetian, Eocene) is an important historic building stone used in the NW of Belgium. In Ghent, it is dominant in the post-Romanesque built cultural heritage. Its use was restricted several times by socio-economic constraints. Since quarrying and production started to cease from the seventeenth century, periodic revivals favoured the use of Lede stone for new buildings and restoration projects. Sulphation is the main threat for the Lede stone as black crusts are the most common degradation phenomena on this arenaceous limestone. Around the turn of the nineteenth century, the Belgian Gobertange stone was the most widely used replacement material. Throughout the twentieth century, the use of replacement material shifted towards French limestones. However, their colour, texture and petrophysical properties differ from the Lede stone, for which a natural yellow–brown patina is very characteristic. In order to solve this mainly aesthetic issue, several new stone types are used as replacement stone in the twenty-first century, while many others have been suggested. It remains, however, difficult to find a replacement stone that matches the visual and petrophysical properties of the Lede stone. One remaining Lede stone quarry pit has increased its activity since 2011, offering the opportunity to use new Lede stone as replacement stone.

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Contents

Geological Society, London, Special Publications

Stone in Historic Buildings: Characterization and Performance

J. Cassar
J. Cassar
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M. G. Winter
M. G. Winter
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B. R. Marker
B. R. Marker
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N. R. G. Walton
N. R. G. Walton
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D. C. Entwisle
D. C. Entwisle
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E. N. Bromhead
E. N. Bromhead
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J. W. N. Smith
J. W. N. Smith
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Geological Society of London
Volume
391
ISBN electronic:
9781862396678
Publication date:
January 01, 2014

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