tailieunhanh - Conservation of Building and Decorative Stone_2

In presenting this book, John Ashurst and I have many people to thank, particularly Ian Bristow for his admirable introduction to the subject of conservation on which successive contributors have built; and David Honeyborne, whose name has long been associated with pioneering work in the field of stone weathering. Many others are owed much, and it is a debt which cannot adequately be repaid. For my part I must thank John Ashurst, first and foremost for the constant aid and encouragement he has given. Without him the shoe leather would not have hit the pavement carrying the wearer to yet another building to add to the record. | Contents 1 2 3 4 5 6 7 8 9 10 11 Methods of repairing and consolidating stone buildings 1 John Ashurst Structural failure and repair 55 Ralph Mills The selection of stone for repairs 71 David B. Honeyborne Mortars for stone buildings 78 John Ashurst Traditional handworking of stone methods and recognition 97 Peter Hill Earthquake damage to historic masonry structures 107 Alejandro Alva Balderrama The repair and remedial treatment of the East Block Parliament buildings Ottawa Canada 114 Keith Blades and John Stewart Cleaning masonry buildings 125 John Ashurst Surface treatments 155 David B. Honeyborne John Ashurst Clifford Price and Keith Ross The conservation of stone monuments in churches 185 John Larson The conservation of stone sculpture in museums 197 John Larson 12 The museum display of architectural features 208 Deborah Carthy 13 The cleaning of painted stone 214 Clare Finn 14 The cleaning and consolidation of the stonework to the Annuciation Door Chapter House Westminster Abbey 219 Keith Taylor Christopher Gradwell and Teresa McGrath Appendix 1 Limewashing 229 John Ashurst Appendix 2 Effects of large numbers of vistors on historic buildings 231 David Honeyborne Appendix 3 The use of air-abrasive cleaning techniques for stone building surfaces 237 Peter Moss Appendix 4 The analytical approach to stone its cleaning repair and treatment 240 Nicola Ashurst and John Kelly Index 245 1 Methods of repairing and consolidating stone buildings John Ashurst Introduction A stone building of any age and condition requires an experienced practitioner to assess its real state and its repair and maintenance requirements. The objective of this and subsequent chapters is to assist the general building practitioner to become more familiar with the problem of stone construction and the various repair and maintenance options rather than to discuss matters of general survey and inspection. There are as many dangers associated with unnecessary or incorrect interference with masonry