ASTM D 4436-2004 标准详情
- 标准号:ASTM D 4436-2004
- 中文标题:石栓长期负载保持力的标准试验方法
- 英文标题:standard test method for rock bolt long-term load retention test
- 标准类别:美国材料与试验协会ASTM
- 发布日期:2004-07-01
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 immed
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