Evaluation of changes of decorative parameters of natural facing stone by processing of chemical and mechanical methods

An important task of stone enterprise is management of decorative production made of natural stone. Among a number of different ways, the most common is the polishing of the stone which changing the parameters of decorative natural stone,. Therefore, the article studies methods of processing natural facing stone that affect the gloss and lightness as decorative figures. The regularities of gloss and lightness changes depending on the time polishing chrome and aluminium oxides were established. It was established that the different types of natural stone with the same textured processing have different values of gloss and lightness. The influence of chemical impregnating means to gloss and lightness of natural facing stone surface was studied and the parameters of gloss and lightness of Pokostivskiy granodiorite, according to its classification of color tone.