Gruvdrift och mineraler

Ämnesområden: Järnmalm
Kommittébeteckning: SIS/TK 149 (Järnmalm)
Källa: ISO
Svarsdatum: den 18 nov 2021
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This document specifies a method to provide a relative measure for evaluating the structural stability of iron ores when reduced under conditions resembling those prevailing in the reduction zone of a blast furnace.
This document is applicable to lump ores and hot-bonded pellets.

Kommittébeteckning: SIS/TK 508 (Naturstensprodukter samt markbeläggningsprodukter av betong)
Källa: CEN
Svarsdatum: den 21 dec 2021
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This document specifies a laboratory method for determining the resistance to thermal and moisture cycling of marble intended for the external cladding of building facades.
For scientific definition of marble, reference is made to EN 12670 Terminology: 2.1.243 a.
NOTE Bowing and rapid strength loss is known to occur in some marbles when used as exterior cladding.