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View larger AASHTO T 85-91 (2004)
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AASHTO T 85-91 (2004) Standard Method of Test for Specific Gravity and Absorption of Coarse Aggregate
standard by American Association of State and Highway Transportation Officials,
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AASHTO T 85-91 (2004) is identical to ASTM C127-88(1993) except provisions specified in this document.This method covers the determination of specific gravity and absorption of coarse aggregate. The specific gravity may be expressed as bulk specific gravity, bulk specific gravity (saturated-surface-dry (SSD)), or apparent specific gravity. The bulk specific gravity (SSD) and absorption are based on aggregate after 15 hours soaking in water. This method is not intended to be used with lightweight aggregates.