Materiales de Construcción, Vol 32, No 186 (1982)

Comentarios críticos de la Norma UNE 7245 sobre "determinación de los compuestos de azufre contenidos en los áridos"


https://doi.org/10.3989/mc.1982.v32.i186.1022

José Calleja
ICCET/CSIC, Spain

Abstract


This paper shows some deficiences of the Spanish Standard Method UNE 7245 and the corresponding deficiences of the Spanish Concrete Code EH-SO adopting it. According to the actual Method, erroneous low values may result in determining sulphides and in general sulphur compounds in cocrete aggregates.
Attention is drawn to the convenience of revising the limit of 1.2 per cent for the admissible maximum value of such compounds, particularly if they are exclusively formed by pyrites.

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