ASTM D2922 PDF

ASTM D2922 PDF

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Astm d – Free download as PDF File .pdf), Text File .txt) or read online for free. ASTM D Standard Tests Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth) – Download as PDF File .pdf). Buy ASTM D TEST METHODS FOR DENSITY OF SOIL AND SOIL- AGGREGATE IN PLACE BY NUCLEAR METHODS (SHALLOW.

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In this system the pound lbf represents a unit of force weight. Sep 30 Find a library where document is available.

Specific plots for a given soil generally are not asstm to other soils. Freedom of unknown errors must be achieved by means of developing density calibration curve s.

Addition of moisture in such soils provides some cohesion that alters the error involved in a density measurement.

Cohesionless soils, for example, are sensitive to volume change during shear. Thus, measured values of in-place density are found to be different from d2292 controlled values.

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These test methods cover the determination of the total or wet density of soil and soil-rock mixtures by the attenuation of gamma radiation where the source and detector s remain on the surface Backscatter Method or the source or detector is placed at a v2922 depth up to mm 12 in.

The inch-pound equivalents may be approximate. Other sources of errors exist with the nuclear standard test, ASTM d Plots of measured values versus controlled values provide means for adjusting the values measured in the asttm for a specific soil.

Active Risk Management

Link to Active This link will always route to the current Active version of the standard. For specific Hazard statements, see Section.

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. Correction Mathematics ; Quality Subject Areas: It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard.

International Road Federation Publisher: This standard does not purport to address all of the safety concerns, if any, associated with its use. All standardized measuring methods investigated require such correction plots. For quality control purposes in road construction, in-place density measurements at shallow depths must be as free of error as possible.

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New Soil and Rock Test Method Combines Elements from Soil Density and Water Content Standards

This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system. Stay on Page Continue to Compass. The paper discusses 1 the degree of errors in the investigated asym in-place density measurements by comparing with known or controlled densities, and 2 the development of calibration curves for a selected soil.

These test methods have been written using the gravitational system of units when dealing with the inch-pound system.