ИЗМЕНЕНИЕ ПРОЧНОСТИ ГЛИНЫ, ЗАГРЯЗНЕННОЙ ОРГАНИКОЙ, ПРИ АНАЭРОБНОМ РАЗЛОЖЕНИИ ГЛЮКОЗЫ RESEARCH ON THE EVOLUTION LAW AND MECHANISM OF CLAY STRENGTH UNDER GLUCOSE ANAEROBIC DEGRADATION

Yuliang Guo, Liwen Cao, Rui Zhang

Аннотация


Исследуется влияние органических загрязнителей из бытовых источников на геотехнические свойства глинистых грунтов. Для испытания прочности загрязненного грунта использовался карманный пенетрометр WXGR-2. Механизм влияния деградации глюкозы на физические свойства глины изучали по
изображениям микроструктуры с помощью сканирующей электронной микроскопии. В результате испытаний была выявлена взаимосвязь между процентом анаэробного разложения глюкозы (АРГ) и несущей способностью загрязненной глюкозой грунта. При анаэробном расщеплении глюкозы с увеличением её концентрации размер пор глины увеличивался, она становилась более рыхлой, прочность её снижалась. В то же время неразложившийся растворимый сахар оказывает противоположное действие. На начальной стадии АРГ (0-1 сут) чем выше концентрация глюкозы, тем больше показатель прочности грунта; на следующей стадии АРГ (10-24 сут) чем больше концентрация глюкозы, тем меньше показатель прочности. АРГ увеличивает пористость загрязненной глины на 7,9% и 4,9% в период 0-12 и 12-24 сут соответственно.


Полный текст статьи публикуется в английской версии журнала
«Soil Mechanics and Foundation Engineering”, vol.63, No.1


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