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Symposium International sur la construction en zone sismique (SICZS’2018), Chlef les 10 et 11 Octobre 2018
INSIGHT INTO THE EFFECT OF RELATIVE DENSITY ON THE MECHANICAL BEHAVIOR OF OVERCONSOLIDATED SAND YOUCEF MAHMOUDI1*, ABDELLAH CHERIF TAIBA1, LEILA HAZOUT2, KHAYREDDINE DOUMI1, WIEBKE BAILLE3, MOSTEFA BELKHATIR1,3 1
LABORATORY OF MATERIAL SCIENCES & ENVIRONMENT, HASSIBA BENBOUALI UNIVERSITY OF CHLEF (ALGERIA) 2 SAÂD DAHLAB UNIVERSITY OF BLIDA (ALGERIA) 3 LABORATORY OF FOUNDATION ENGINEERING, SOIL & ROCK MECHANICS, RUHR-UNIVERSITÄT BOCHUM (GERMANY) (*) CORRESPONDING AUTHOR E-MAIL:
[email protected]
Abstract The proposed laboratory research investigation aims to study the effects of the initial relative density and overconsolidation ratio on the undrained shear strength of Chlef (Algeria) River sand samples subjected to monotonic loading conditions. For this study, a series of undrained monotonic triaxial tests were carried out on reconstituted saturated Chlef sand samples and subjected to different overconsolidation ratios (OCR=1, 2, 4 and 8). The samples were prepared with dry funnel pluviation method at three selected relative densities (Dr = 18%, 52% and 88%). The initial confining pressure for all tests was kept constant (σ'3 = 100 kPa). The test results indicate that the overconsolidation ratio (OCR) and initial relative density (Dr) increase the dilativeness of the normally consolidated and overconsolidated sandy. However, The obtained data confirm the existence of a linear relationship between the undrained peak shear strength of overconsolidated Chlef sand samples (qpeak_OC) and undrained shear strength of normally consolidated Chlef sand (qpeak_NC) for the range of the initial relative density (18% ≤ Dr ≤ 88%) under consideration. Keywords: Sand, Triaxial apparatus, Relative density, Overconsolidation ratio, Undrained shear strength
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Symposium International sur la construction en zone sismique (SICZS’2018), Chlef les 10 et 11 Octobre 2018
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Symposium International sur la construction en zone sismique (SICZS’2018), Chlef les 10 et 11 Octobre 2018
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Symposium International sur la construction en zone sismique (SICZS’2018), Chlef les 10 et 11 Octobre 2018
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