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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.7, 2004³â, pp.99-105
½Ã·áäÃë¿¡ ÀÇÇÑ ÀÀ·ÂÇØ¹æ½Ã ½Ã·áº¯ÇüÀ» °í·ÁÇÑ ¾Ð¹Ð½ÃÇè
( Consolidation Test Method Considering Sample Deformation Due to Stress Release by Sampling )
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When a saturated clay is sampled from a borehole in an undisturbed manner, the exerted negative pore water pressure restricts the volume expansion. The vertical and horizontal stresses to which the clay was subjected in the ground are smaller and larger than this isotropically confining stress equivalent to the mean principal stress in the ground, respectively. Therefore the sample expands vertically and shrinks laterally under an undrained condition. In the ordinary consolidation test, the sample thus deformed is trimmed to fit the inside of the consolidometer ring. Thus, the specimen generates larger consolidation displacement due to confining larger horizontal stress when in-situ effective pressure is loaded. The specimen does not reproduce the in-situ consolidation behavior, In this paper, considering sample deformation, the test specimen is made to expand laterally to fit the inside of the ring in the undrained manner when the in-situ effective pressure is loaded. And applicability of this proposed test procedure was verified; results from the conventional consolidation test procedure are also discussed.
 
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Clay;Consolidation test;Expansion;Sampling;Stress release;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.7, 2004³â, pp.99-105
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200425720311055)
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