| The purpose of this research is to present a feasible preservation program for Zhuhai Baojingwan Stone Carvings, as well as a reference for the conservation of stone heritage sites at the outdoor of humid region. The research includes valve assessment, environmental influence, causes of deterioration, choice of chemical treatments and comprehensive technical intervention. On the basis of investigating and research of the stone cavings' history, existing condition, environment and deterioration, main causes of deterioration are found out and some feasible conservation measures are proposed.According to current researches on stone heritage sites, several in-common-use conservation products, such as silicone and fluosilicate, are evaluated. Properties of these materials, such as chromatic aberration, compressive strength, contact angle, water absorption, resistance to water, salt acid and freezing, are measured in laboratory. Then further tests are carried out in site. Based on these tests, MTES and R300 are suitable as consolidants, and MTES, F8815, F8261 as water repellents. The selection of biocide materials are also carried out.As the environment of the stone carvings is complicated and very humid, it needs various conservation measures at one time. Besides chemical treatments, some technical measures are also suggested, such as shedding, improving waterproof equipment and building water-isolating groove, etc. |
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