Stress-dependent behavior of marine clay admixed with fly-ash-blended cement

To investigate the stress-dependent behavior of fly-ash blended cement (FAC)-admixed marine clay, isotropic consolidated drained (CID) triaxial tests were performed in the confining pressure range of 50-350 kPa. Stress dilatancy was observed when the confining pressure was in the lowest range of 50-100 kPa. The peak strength increased linearly with increasing confining pressure; this linear relationship was described by the following equation: pp = 1.7σ3 + 581 kPa, wherein pp is the peak strength and σ3 is the confining pressure. In the CID tests, failure modes of specimens were similar under different confining pressures. From the Mohr circles, it was found that the angle of shearing resistance was 52.8° and the cohesion intercept was 230.5 kPa. When the confining pressure was lower than the primary yield stress, some variation in the secant modulus was observed. However, the secant modulus tends to increase when the confining pressure exceeds the primary yield stress.

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  • English

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  • Accession Number: 01685007
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 17 2018 3:15PM