| Cleaning the surface of stone historical building is an important part of all rehab and maintenance, it plays an important role in maintaining the original appearance of the building materials protection. The purpose of cleaning and maintenance is to remove the attachment on the stone surface. The stone surface cleaning by mechanical method, supplemented if necessary by chemical methods, in order to control the degree of cleanliness. However, the cleaning method is selected not only according to the physical and chemical properties of stone, but also need to consider about several various factors, such as the costing of cleaning and maintaining, length of duration, trim around the building environment and seasonal climate changes, the building and construction personnel safety. Because the cleaning process of intervention itself is not reversible, so every decision and the specific operation is an important link in the process, which must be particularly careful.The full text is divided into seven chapters:The first chapter is an introduction. Introduces the research background, research object, the significance and the goal, the interpretation of key concepts, the research method and innovation, the research at home and abroad were reviewed, and the research framework of this dissertation are listed.The second chapter analysis the disease on stone historical building. Combing the Beijing stone historical building, the types and production of the used stone. And then combined with the relevant knowledge, analysis of the pathological mechanism, building stone causes and pathological type, summarized the stone historical building, the census summary stone disease(cleaning).The third chapter is the cleaning technology strategy research of the stone historical building. The cleaning principle and importance, the current situation and existing problems in building stone protection and cleaning technology, introduces the types of commonly used cleaning technology, the effect of cleaning and inspection standard, summarizes the different diseases with different stone the suitability of the cleaning technology.The fourth chapter is the maintenance technology strategy research of the stone historical building. The principles and the importance of the maintenance, the current situation and existing problems of building stone maintenance technology were reviewed, described in detail the various curing agent types and their characteristics, the effect and test standard curing, evaluates different stone care agent applicable scope and characteristics, suggestions on the management of historic buildings in use in the process of transformation and suitability of the proposed.The fifth chapter is the domestic and foreign excellent cleaning maintenanceengineering case analysis. The author introduces the practical engineering cases in homeland and abroad to research and interviews. If not as detailed, hope the relevant experts to criticism.The sixth chapter is the stone cleaning experiment and analysis of the stone historical building in Beijing. The author in the communication and professional staff, under the guidance of independent completed a simple experiment of stone cleaning, as the main content of this article in the third and fourth chapter.Finally is this article conclusion part. Summary of the full text of the research content and conclusion, puts forward the future research direction, and expounds the research to improve the part. |
