Behavior of diatomaceous soil in lacustrine deposits of Bogotá, Colombia

(چکیده مقاله) :
Abstract :

This work presents a study on the behaviors of diatomaceous soils. Although studies are rarely reported
on these soils, they have been identified in Mexico City, the Sea of Japan, the northeast coast of Australia,
the equatorial Pacific, and the lacustrine deposit of Bogotá (Colombia), among other locations. Features of
this kind of soil include high friction angle, high initial void ratio, high compressibility index, high liquid
limit, and low density. Some of these features are counterintuitive from a classical soil mechanics
viewpoint. To understand the geotechnical properties of the diatomaceous soil, a comprehensive
experimental plan consisting of more than 2400 tests was performed, including physical tests such as
grain size distribution, Atterberg limits, density of solid particles, and organic matter content; and mechanical tests such as oedometric compression tests, unconfined compression tests, and triaxial tests.
Laboratory tests were complemented with scanning electron microscope (SEM) observations to evaluate
the microstructure of the soil. The test results show that there is an increase in liquid limit with
increasing diatomaceous content, and the friction angle also increases with increasing diatomaceous
content. In addition, several practical correlations were proposed for this soil type for shear strength
mobilization and intrinsic compression line. Finally, useful correlations were presented, such as the
relationship between the state consistency and the undrained shear strength, the friction angle and the
liquid limit, the void ratio at 100 kPa and the li

(توضیحات تکمیلی) :

(توضیحات تکمیلی) :
Description :

مقاله ISI انگلیسی اصلی
سال انتشار:2018
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 13 صفحه

Authors / Descriptions(نویسندگان/توضیحات): مقاله ISI مربوط به ترجمه مقابل / رفتار خاک دیا تومه در رسوبهای دریاچه ایی در بوگوتا کلمبیا
Sent date(تاریخ ارسال) : 1397/12/16  |   3/7/2019
Number of visits(تعداد بازدید): 1309
Key words (کلمات کلیدی): Diatomaceous soil Soft soils Compressibility Friction angle Natural soil
Number of pages(تعداد صفحات) : 13
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