ASTM-D2950 2011

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D2950/D2950M-11 Standard Test Method for Density of Bituminous Concrete in Place by Nuclear Methods

Published By	Publication Date	Number of Pages
ASTM	2011	5

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Categories: 93.080.10 - Road construction, 93.080.20 - Road construction materials, ASTM

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Description

1.1 This test method describes a test procedure for determining the density of bituminous concrete 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 known depth up to 300 mm [12 in.] while the detector or source remains on the surface (Direct Transmission Method).

1.2 The density, in mass per unit volume of the material under test, is determined by comparing the detected rate of gamma emissions with previously established calibration data.

1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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 specific warning statements see Section 6 and Note 4.

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PDF Pages	PDF Title
1	Scope Referenced Documents Significance and Use Interferences
2	Apparatus Hazards Calibration Standardization and Reference Check
3	Procedure Calculation of Results Report Precision and Bias
4	Keywords A1. CALIBRATION A1.1 A1.2 A1.3 A1.4 A1.5 A1.6 A1.7 Calibration Standards: A2. CALIBRATION ADJUSTMENTS A2.1 A2.2
5	A3. DETERMINATION OF DEPTH OF MEASUREMENT A3.1

Additional information

Standard Title	D2950/D2950M-11 Standard Test Method for Density of Bituminous Concrete in Place by Nuclear Methods
Published Code	ASTM
Publication Date	2011
Pages Count	5
ICS Codes	93.080.10 - Road construction 93.080.20 - Road construction materials

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ASTM-D2950 2011

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