ASTM International - ASTM D4436-84(1998)
Standard Test Method for Rock Bolt Long-Term Load Retention Test
|Publication Date:||10 December 1998|
|ICS Code (Earthworks. Excavations. Foundation construction. Underground works):||93.020|
1.1 The objective of this test method is to determine the time over which rock bolt tension decreases from the installed value to a designated minimum value.
1.2 This test method is applicable to any anchor system which is not fully encapsulated immediately upon installation, including mechanical, cement grout, resin (epoxy, polyester, and the like) or other similar systems.
1.3 The values stated in inch-pound units are to be regarded as 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.