CORRECTING SHEAR STRENGTH FOR TEMPERATURE

This paper describes part of an investigation into the effects of temperature on geotechnical properties of weak deep-ocean sediments and proposes an empirical correction. Selected sections of undisturbed marine core samples and samples of remolded commercial clays at several water contents were subjected to six cycles of being cooled to 4 degrees C, measured for strength and sediment temperature warmed to room temperature, measured again for strength and sediment temperature, and then cooled again to 4 degrees C. It was found that temperature sensitivity of shear strength increases with increasing shear strength. The correlation coefficient for average shear strength versus temperature sensitivity was computed to be 0.70, meaning that sediment strengths would be about 10 percent higher at sea bottom temperature (4 degrees C) than at laboratory temperature (20 degrees C). Because of natural heteorgeneities and the unavoidable errors in measurements of weak sediment strengths, this is a relatively insignificant effect.

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  • Accession Number: 00178397
  • Record Type: Publication
  • Report/Paper Numbers: ASCE 13755
  • Files: TRIS
  • Created Date: Sep 14 1978 12:00AM