Standard Test Method for Relative Density (Specific Gravity) and Absorption of CoarseAggregate

Designation: C127-15 Standard Test Method for Relative Density (Specific Gravity) and Absorption of CoarseAggregate1
1. Scope
1.1 This test method covers the determination of relativedensity (specific gravity) and the absorption of coarse aggre-gates. The relative density (specific gravity). a dimensionlessquantity, is expressed as oven-dry (OD), saturated-surface-dry(SsD).or asapparent relative density (apparcnt specificgravity). The OD relative density is determined after drying theaggregate.The sSD relative density and absorption are deter-mined afiter soaking the aggregate in watcr for a prescribedduration.
1.2 This test method is not intended to be used withlightweight aggregates that comply with Specification C332Group l aggregates.
1.3 The values stated in Sl units are to be regarded asstandard. No other units of measurement are included in thisstandard.
l.4 The text of this test mcthod references notes andfootnotes that provide explanatory material. These notes andfootnotes (excluding those in nables and figures) shall not beconsidered as requirements of this test method.
1.5 Thris stanrdard does nor puarport to address all of thescafety concerns，if any,associated wirh irs sese. I is theresponsibility of the user of this scndard to establish appro-priete safery and healra pracrices and deternine rhe applica-bility of regulasory limitarions prior to use.
2. Referenced Documents
2.1 ASTM Stardards:2
c29/C29M Test Method for Bulk Density ("Unit weight"")and Voids in Aggregate