Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2009.09a
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- Pages.1425-1434
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- 2009
Quality Evaluation by Automatic Recording System of SPT
표준관입시험(SPT)의 자동기록장치에 의한 품질평가
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Kim, Jong-Kook
(Geo-Team., Institution of Korea Construction Quality Test&Analysis)
;
- Kang, In-Jung (Geo Testing Management Co., ltd.) ;
- Kim, Khi-Woong (Dept. of Civil Engineering, Incheon City College) ;
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Chae, Young-Soo
(Dept. of Civil Engineering, The University of Suwon)
- Published : 2009.09.25
Abstract
This study was aimed at comparing and assessing SPT-N values both measured by automatic and manual record devices of Standard Penetration Test. As a result, energy efficiency of hammer was approximately 62.9%, meaning SPT-N value measured by automatic recording device showed relatively accurate performance that the one done by manual device. Given the relations between hit frequency of automatic recording device and intrusion, the characteristics of stratum are expected to be proved in more accurate way. Additionally, higher confidence level seems to make it preferred and quality assessment method.