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There is a chance that the water will leave mineral deposits in a white/tan crust-like fashion. That "crust" can cause damage or become more permanent if it comes in contact with the metal surface or a patina and needs to be periodically removed. There are different chemical treatments that can be used to control the levels of these factors.
Cement mortar can be chiselled away with a hammer and chisel gradually. Plaster is easily removed through mechanical methods such as chiselling and chipping away with sharp implements. Saws, drills, and other mechanical methods can be used to remove the bulk of protruding materials; however, scratches, chips, and breaks can occur. [4]: p.77–78
Physical weathering, also called mechanical weathering or disaggregation, is the class of processes that causes the disintegration of rocks without chemical change. Physical weathering involves the breakdown of rocks into smaller fragments through processes such as expansion and contraction, mainly due to temperature changes.
Shelves in the storerooms must be of stainless steel or chlorine and acetate free plastic or powder coated steel. Wood and wood based products (particle board, plywood) must be avoided. Also do not use rubber, felt or wool. When you are handling metal objects, always wear clean cotton gloves .
Similar to many other bronze statues, the statue of Joseph of Portugal had an interventive conservation treatment. The conservation decision made to remove the patina most likely happened for two reasons. Firstly, it improves the visual impression of the statue; and secondly, the patina is a corrosive process slowly destroying the metal.
That same year, ancient bronze statues were found in a garbage dump in Tuscany, Italy. In 2013, a 1,800-year-old carved stone head possibly depicting a Roman god found in an ancient trash dump in ...
Deterioration of stone depends on several factors such as the type of stone, geographical or physical location, and maintenance. Stone is subject to a number of decay mechanisms that include environmental, mechanical, and applied decay. Erosion from air, water, and physical touch can wear away surface texture. Carved stone should not be ...
Conservators routinely use chemical and scientific analysis for the examination and treatment of cultural works. The modern conservation laboratory uses equipment such as microscopes , spectrometers , and various x-ray regime instruments to better understand objects and their components.