ASTM International - ASTM C1040-93(2000)
Standard Test Methods for Density of Unhardened and Hardened Concrete In Place By Nuclear Methods
|Publication Date:||10 January 2000|
|ICS Code (Concrete and concrete products):||91.100.30|
1.1 These test methods cover the determination of the in-place density of unhardened and hardened concrete by gamma radiation. For notes on the nuclear test see Appendix X1.
1.2 Two test methods are described, as follows:
Section Test Method A---Direct Transmission 7 Test Method B---Backscatter 8
1.3 The values stated in inch-pound units are to be regarded as the standard. The SI equivalents of inch-pound units may be approximate.
1.4 This standard does not purport to address all of the safety problems, 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.