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BSI BS 7943:1999

Guide to the interpretation of petrographical examinations for alkali-silica reactivity
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BSI BS 7943:1999

Guide to the interpretation of petrographical examinations for alkali-silica reactivity

PUBLISH DATE 1999
PAGES 20
BSI BS 7943:1999

This British Standard gives guidance on the interpretation of the results of petrographical examination of coarse and fine aggregates, carried out in accordance with BS 812-104, in terms of the susceptibility of the combined aggregate to alkali-silica reactivity (ASR) sufficient to cause damage to concrete in which it is used. The guidance is not applicable to alkali-carbonate reactive materials.

NOTE 1 Guidance on precision expected from the petrographical examination of coarse and fine aggregates, carried out in accordance with BS 812-104, is given in annex A.

NOTE 2 It is recommended that a petrographical examination be earned out by a petrographer who is a member of the Proficiency Scheme for Aggregate Petrographers.

Applies to coarse and fine aggregates as specified in BS 812-104.
SDO BSI: British Standards Institution
Document Number 7943
Publication Date July 15, 1999
Language en - English
Page Count
Revision Level
Supercedes
Committee B/502
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