Chemical : European Standards for Aggregates

The aggregates utilized in the creation of concrete are inactive granular materials, for example, gravel, squashed stone, sand, slag, reused concrete, and geosynthetic aggregates. The aggregates might be normal, produced, or reused.

In this article, we examine the chemical necessity of the aggregates, for example, chloride, sulfur content, and other chemical constituents according to the European Standards (EN - 12620).

Chlorides Content

The water-dissolvable chloride particle content of aggregates for concrete will be resolved as per?EN 1744-1:1998, proviso 7, and will, on demand, be announced by the maker.

In the event that the water-dissolvable chloride particle content of the joined aggregate is known to be 0.01 % or lower (e.g., for extrication from most inland quarries), this worth can be utilized in the figuring of the chloride content of concrete.

Sulfur Compounds

1. Acid Soluble Sulfate: The corrosive solvent sulfate content of the aggregates and filler aggregates for concrete decided as per?EN 1744-1:1998,?provision 12, will be proclaimed as per the pertinent classification determined in the books.
2. Total Sulfur: The all out sulfur content of the aggregates and filler aggregates, decided as per?EN 1744-1:1998,?provision 11, will not surpass:
3. 2% S by mass for air-cooled impact heater slag.
4. 1% S by mass for aggregates other than air-cooled impact heater slag.

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