Traditional mortars are eminently workable, effectively porous, economic in use and appropriately durable. Used in buildings for thousands of years, these materials are ideal for repair and conservation work. Unlike cement or modern hydraulic lime, their routine use would make a significant contribution in the struggle against climate change. However, despite the 1975 'lime revival' there remains a deficit in research into the most-used traditional mortars. This book seeks to redress the balance. Drawing upon historic literature, material science and industry case studies, topics covered include: a historical overview of traditional mortars; slaking and mixing hot mixed lime mortars; the essentials of pozzolans, aggregates and lime tempering; plasters, lime washes and sheltercoats, and finally, the revival of interest in the use of like-for-like and compatible mortars.
Hot Mixed Lime and Traditional Mortars by Nigel Copsey
Nigel Copsey began his career as a dry-stone waller, before training as a stonemason and carver. He has since worked in the conservation industry across the UK, the USA and Andalusia, specializing as a consultant and practitioner on major repair projects for historic buildings. An accredited conservator-restorer, he is a leading advocate for the routine use of hot mixed lime and traditional earth-lime mortars, working with Historic England, Historic Environment Scotland and international partners in the delivery of training and education. Nigel is a Research Associate of the Department of Archaeology, University of York.
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