کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
307212 513344 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Particle breakage and the critical state of sand
ترجمه فارسی عنوان
شکستگی ذرات و حالت بحرانی شن و ماسه
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی

Soil particles break during shear, with the intensity of the breakage depending on the stress level amongst other factors. Particle breakage has important implications for the soil׳s critical state, which is an input to the majority of advanced constitutive models. This work examines a micromechanical framework where particle breakage shifts down the critical state locus in void ratio versus mean effective stress space without changing its slope. The framework assumes that detectable particle breakage in sand does not occur unless the contraction potential of the material, solely by the sliding and the rolling of the particles, is exhausted and a soil specific stress level threshold is surpassed. A series of triaxial compression tests conducted to investigate the validity of the framework is presented. It is shown that particle breakage is a factor, working alongside dilatancy, imposing additional compressibility on the soil.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soils and Foundations - Volume 54, Issue 3, June 2014, Pages 451–461
نویسندگان
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