Testing the durability of limestone for Cathedral façade restoration

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Laycock, E. A. ; Spence, Kevin ; Jefferson, D. P. ; Hetherington, S. ; Martin, B. ; Wood, C.

This research aimed to specify an optimum replacement stone for Truro Cathedral. A variety of petrographically and visually similar material to the original Bath stone was initially selected. The stones were subjected to 3 different durability tests; Sodium sulphate crystallisation and large scale testing with both accelerated and climatic freeze-thaw cyclic loading.\ud \ud The most suitable stone was determined as the one with the best performance characteristics overall.
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