ASTM C128 PDF

Referenced Documents. ASTM Standards: C 29/C 29M Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate2. C 70 Test Method for Surface. ASTM Designation: C 1. SCOPE. This method covers the determination of bulk and apparent specific gravity, 23/23ºC. (/ºF), and absorption. Qty. Model, Description. 1, Choose One: HBA, Adam Core balance g x g, V 60Hz. HBA.4F, Adam Core balance g x g, V 50/.

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It is also expressed as the ratio of the density of the aggregate particles to the density of water. Likewise, relative 1c28 specific gravitya dimensionless quality, is expressed as OD, SSD, or as apparent relative density apparent specific gravity.

No other units of measurement are included in this standard. Asmt values obtained for absorption by other test methods will be different than the values obtained by the prescribed h soak, as will the relative density specific gravity SSD.

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The relative density specific gravitya dimensionless quality, is expressed as oven-dry ODsaturated-surface-dry SSDor as apparent relative density ashm gravity.

Work Item s – proposed revisions of this standard. Conversely, some aggregates that have not been continuously maintained in a moist condition until used are likely to contain an amount of absorbed moisture less than the h soaked condition.

Aggregates mined from below the water table commonly have a moisture content greater than the absorption determined by this test method, if used without opportunity to dry prior to use. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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The SSD relative density and absorption are determined after soaking the aggregate in water for a prescribed duration. Historical Version s – view previous versions of standard. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the asgm of regulatory limitations prior to use. These notes and footnotes excluding those in tables and figures shall not be astj as requirements of this test method.

The laboratory standard for absorption is that obtained after submerging d128 aggregate for a prescribed period of time. The test results for density shall be reported in either SI units or inch-pound units, as appropriate for the use to be made of the results.

The OD density and OD relative density are determined after drying the aggregate. Relative density specific gravity SSD is used in the determination of surface moisture on fine aggregate by asfm of water in Test Method C These notes and footnotes excluding those in tables and figures shall not be considered as requirements of this test method.

Link to Active This link will always route to the current Active version of the standard.

Alternatively, the relative density specific gravity OD is used astn computations when the aggregate is dry or assumed to be dry. The SSD density, SSD relative density, and absorption are determined after soaking the aggregate in water for a prescribed duration. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For an aggregate that has been in contact with water and that has free moisture on the particle surfaces, the percentage of free moisture is determined by deducting the absorption from aetm total moisture content determined by Test Method C by drying.

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ASTM C Standard

Relative density specific gravity SSD is used if the aggregate is in a saturated surface-dry condition, that is, if its absorption has been satisfied. Link to Active This link will always route to the current Active version of the standard. Active view current version of standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of astk standard.

This value is not widely used in construction aggregate technology. The OD relative density is determined after drying the aggregate. Work Item s – proposed revisions of this standard.