• liquefaction potential of clean and silty sand

    نویسندگان :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1504
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
    soil liquefaction is one of the most interesting and complex phenomena studied in geotechnical earthquake engineering. the liquefaction resistance of a saturated fine to medium sand mixed with varying amounts of non-plastic fines was evaluated by laboratory cyclic triaxial tests at same relative densities and a constant confining pressure. the test results were used to conclude on the effect of low non-plastic contents (0 to 20%) and grading characteristics on the liquefaction resistance of the sand. the test results indicate that the undrained residual strength reduced with the increase of non-plastic fine content. also, shear strength of gap graded sand mixed with low non-plastic fine content increases with decrease in effective size (d50). in other words, in this state, we can use the d50 as a parameter to control of silty sand’s undrained resistance. besides, the undrained residual strength of pour sand specimens with same effective size increases due to increase of coefficient of uniformity (cu).

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