Gruvedrift og steinbryting

Komité: CEN/TC 246 (Natural stones)
Opprinnelse:
Sluttdato: 18. apr 2019
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This document specifies a test method to assess the relative resistance of natural stones with an open porosity of greater than 5 %, measured in accordance with EN 1936, to damage caused by the crystallization of salts. The test is not necessary for low porosity stones.
Komité: CEN/TC 246 (Natural stones)
Opprinnelse:
Sluttdato: 18. apr 2019
Vis merVis mindre
 
The European Standard specifies a method to assess the sensitivity of natural stones when exposed to accidental staining. It defines a procedure for the application of the stains, the cleaning and the assessment of the surface appearance after cleaning. It also covers the possibility to assess the efficiency of a surface treatment. Note that the method does not intend to present any de-staining technique.