Impact of cement repointing on rates of sandstone decay in medieval churches of the French Massif Central
Published:January 01, 2014
Marie-Françoise André, Olivier Voldoire, Franck Vautier, Erwan Roussel, Bruno Phalip, David Morel, 2014. "Impact of cement repointing on rates of sandstone decay in medieval churches of the French Massif Central", Stone in Historic Buildings: Characterization and Performance, J. Cassar, M. G. Winter, B. R. Marker, N. R. G. Walton, D. C. Entwisle, E. N. Bromhead, J. W. N. Smith
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Three Romanesque churches of the Bourbonnais region in the French Massif Central have been investigated. These date back to the twelfth century, and are mainly built of red and white sandstones. Their ashlar blocks were extensively repointed in the mid-twentieth century with cement-rich mortar. In order to quantitatively assess the impact of repointing on the decay rates of the sandstones, the following methods have been used: dating of reference surfaces (‘zero datum levels’) based on stone-dressing marks, stone-by-stone and terrestrial LiDAR (Light Detection And Ranging) surveys, and petrographical analyses including on-site non-destructive tests. This study reveals that, between the...
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Stone in Historic Buildings: Characterization and Performance
There is considerable academic and practical interest in stone and stone buildings, as exemplified by the wide range of high-quality and innovative work being conducted in the pursuit of the effective preservation and restoration of historic buildings. This is reflected in the numerous publications on stone and stone buildings that regularly find their way into the public domain. Not least amongst these are a number of Geological Society Special Publications, which have appeared in recent years. This current volume seeks to bring to the attention of the various professionals in the field (geologists, architects, engineers, conservators and conservation scientists) recent work centred on the characterization and performance of this important resource and its use in historic buildings. The volume has wider relevance, including to those interested in the heritage of stone.