Revitalising Collyweston limestone slate production by artificial freeze/thaw splitting

LAYCOCK, Elizabeth, JEFFERSON, David, HETHERINGTON, Steven, CLEGG, Francis and WOOD, Christopher (2017). Revitalising Collyweston limestone slate production by artificial freeze/thaw splitting. Construction and Building Materials, 159, 486-498.

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Abstract

Extraction of limestone roofing slate from Collyweston was an industry which was considered extinct by the early 1990′s, with building repairs relying on wholesale recycling of roofing from demolished buildings. Traditionally stone extracted from the mines was exposed to natural cycles of freeze/thaw to facilitate splitting. Work was undertaken over several years to investigate the resources available and whether these could be artificially frozen to produce slates. The work identified a freeze/thaw regime which could be used to produce roofing slates for historic buildings and which were used in the Historic England restoration of Apethorpe Palace. Mining of the Collyweston limestone stone has now resumed and uses artificial freezing to achieve production of slates which is economically feasible due to the faster process time.

Item Type:	Article
Research Institute, Centre or Group - Does NOT include content added after October 2018:	Built Environment Division Research Group
Identification Number:	https://doi.org/10.1016/j.conbuildmat.2017.10.039
Page Range:	486-498
Depositing User:	Elizabeth Laycock
Date Deposited:	26 Oct 2017 09:19
Last Modified:	18 Mar 2021 07:07
URI:	https://shura.shu.ac.uk/id/eprint/17168

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