Investigation of changes in the intensity of polished surface glow of natural stone depending on the intensity of its heating

Abstract In this publication, the authors consider the influence of high temperatures on the change in the intensity of the gloss of the front surface of products made of acidic and basic rocks of natural stone. Changes in gloss intensity were analyzed for each of the control points of heating for the front surface of samples of acidic and basic rocks of natural stone. The main factors affecting the change in the intensity of the gloss of the front surface of products made of acidic and basic natural stone are determined. It has been established that when heated (exposure to high temperatures), acidic rocks of natural stone lose their luster less intensively than rocks with a basic composition. The greatest loss of luster upon heating (exposure to high temperatures) is characteristic of labradorite. On the basis of the obtained values, it is possible to predict the change in the intensity of the gloss of the front polished surface of products from basic and acidic natural stone after exposure to high temperatures, as well as to control the quality of the front surface of natural stone products to obtain products with specified parameters for restoration or restoration work.