1. Rationale
Section 9.3 of current ASTM C856 describes photography, which contains obsolete information that is inconsistent with current digital imaging technology. The work ites is created to update this section, including removing specifics on magnification and camera operations. Specifics, including suggested magnification and type of photography equipment used should be left to the petrographers discretion.
Keywords
aggregates; air voids; alkali-silica reaction; analysis; deterioration; examination; fire effects; hardened concrete; microscopy; paste; petrographic; secondary deposits; Fire testing--building materials; Hardened concrete; Microscopic examination--concrete; Petrographic analysis; Stereomicroscopy; Visual examination--concrete; Alkali reactivity;
Citing ASTM Standards
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