AEによる粘性土の先行圧縮応力の推定

Abstract

In this paper, the estimation of precompression pressure on clay was tried measuring AEactivity which occurs from specimens during drained isotropic triaxial loading. For thispurpose, the experimental studies described following were carried out by using the two typeof samples (I. E. remolded-reconsolidated clay and undisturbed diluvial clay).First, Kaiser effect on clay was checked. Secondary, comparisons between the pressureestimated from Kaiser effect and precompression pressure obtained by consolidation testsusing undisturbed diluvial clay were examined. Results obtained by series of tests are fol-lows: (1) Kaiser effect on clay recongnized in drained isotropic triaxial tests. (2) Precom-pression stress of undisturbed clay estimated from AE tests agreed very well with results ofconsolidation tests.