Stone Cleaning

Steering Committee, Acknowledgements, Foreword, OVERVIEW, 1. Stone cleaning, for better or worse? An overview, SESSION I. THE BROAD ISSUES, 2. A brief history of grime: accumulation and removal of soot deposits on buildings since the 17th century, 3. Towards an aesthetic theory of building soiling, 4. Stone cleaning - a professional view, 5. Sources of building soiling and a review of the stone cleaning industry 1991, SESSION II. CASE STUDIES AND EXPERIMENTAL INVESTIGATION, 6. To clean or not to clean buildings within Edinburgh, 7. Scott Monument - a brief study report, 8. The cleaning of the Palace of Westminster, 9. A conservator's approach to architectural stonework, 10. The composition and weathering of sandstone with relation to cleaning, 11. Abrasive cleaning of sandstone buildings and monuments: an experimental investigation, 12. Research on cleaning methods applied to historical stone monuments, 13. Experience with cleaning and consolidating stone fa§ades in Hungary, SESSION III. THE CLEANING OF CARBONATE STONE, 14. Stone cleaning by the inversion of gypsum back into calcium carbonate, 15. Removal of sulphated-crust from marble using sulphate reducing bacteria, 16. Geochemical considerations in the cleaning of carbonate stone, SESSION IV. URBAN CONSERVATION ISSUES, 17. 'Acid Rain': the cleaning and conservation of stonework in Bath, 18. Conservation and planning considerations in stone cleaning, 19. Stone cleaning in urban conservation, 20. Building cleaning - process or procedure, an industry view, SESSION V. CHEMICAL AND MICROBIOLOGICAL STUDIES, 21. Chemical cleaning of sandstone - comparative laboratory studies, 22. Effects of particulate air pollutants on materials: investigation of surface crust formation, 23. The impact of stone cleaning on micro-organisms and microbially influenced corrosion, 24. Microbial interactions with building stones, with special reference to various cleaning, conservation and restoration techniques, 25. Microbiological damage to building stone: analysis and intervention, SESSION VI. STONE DECAY, WEATHERING AND FUTURE PROSPECTS, 26. Assessment of building stone decay: a geomorphological approach, 27. Decay mechanisms of oolitic limestones in an urban environment: King's College Chapel, Cambridge and St Luke's Church, London, 28. The weathering of the statues of Prato delia Valle and the criteria used for consolidation, 29. Weathering as a controllable phenomenon, 30. Cleaning or proper detailing to prevent cleaning?, 31. The removal of graffiti