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