Efficiency Measurement of Indian Standard SPT Hammer Context for Liquefaction |
Author(s): |
| Tarik Salman , MADAN MOHAN MALAVIYA UNIVERSITY OF TECHNOLOGY; Abhishek Kumar Tiwari, MADAN MOHAN MALAVIYA UNIVERSITY OF TECHNOLOGY; Abhay Tripathi, MADAN MOHAN MALAVIYA UNIVERSITY OF TECHNOLOGY; Dr. S. M. Ali Jawaid, MADAN MOHAN MALAVIYA UNIVERSITY OF TECHNOLOGY |
Keywords: |
| SPT, N-value, Energy measurement, liquefaction potential evaluation |
Abstract |
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The standard penetration test (SPT) is the most widely used in in-situ test. This test involve hammer impact on penetration rods, and resulting penetration resistance or blow counts is strongly influenced by the amount of hammer energy actually transferred into the rods. Research has shown that the energy transfer to the rod is lesser than the actual energy generated by the blows of hammer, so the direct approach of determining the transferred energy, based on force and acceleration measurements near the top of the drill rods, should be adopted. The proposed approach provides a unified method of measuring transferred energy in the SPT. The measured energy data can be used in a consistent manner to correct the recorded blow counts to a reference energy level for each test and allow reliable correlation of the same in assessment of liquefaction potential evaluation. |
Other Details |
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Paper ID: IJSRDV2I7001 Published in: Volume : 2, Issue : 7 Publication Date: 01/10/2014 Page(s): 429-432 |
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