The use of surface protectants: the current situation in Spain
In the present paper a review is made about the works and researches related to the use of superficial protectants for the stones conservation in Spain. It deals with the parameters and durability tests most frequently used in laboratories, in order to foretell the suitability of the different treatments. It is also pointed out the significance that on the stone durability have the changes undergone by the treatment in the configuration of the pore system of the treated stone. Several examples selected from recent scientific bibliography are shown and related to the aspects above mentioned.
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