Development of Ground Freezing System for Undisturbed Sampling of Granular Soils
المؤلفون المشاركون
Kim, Youngseok
Hwang, Bumsik
Cho, Wanjei
المصدر
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-13، 13ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-08-27
دولة النشر
مصر
عدد الصفحات
13
التخصصات الرئيسية
الملخص EN
The ground freezing technique was first invented for the undisturbed sampling of the granular soils.
With increasing necessity of liquefaction evaluation under earthquake loading, there has been more research with high-quality granular samples, with ground freezing techniques in the world.
However, there has been little research on the ground freezing techniques since Korea had no records of liquefactions until the Pohang earthquake in 2017.
Since more than 10 places were reported with liquefaction phenomena, it is required to assess the liquefaction potential with high-quality samples of granular soils.
Therefore, in order to obtain undisturbed samples of granular soils, a new local ground freezing equipment and an operating system were developed in this study.
The applied coolant was liquid nitrogen and circulated through a double tube inserted in the ground.
To evaluate the performance of the system, laboratory scale tests were performed with water only and saturated fine sands.
In the laboratory evaluation, a frozen soil column of 60 cm diameter was made after 20 hours and the average freezing rate was approximately 12 mm/hr in radial direction.
After laboratory evaluation, the freezing system was applied in the field and the performance was evaluated with the 2D electrical resistivity tomography.
In the field evaluation, the frozen region was 4 m diameter with 6.5 m depth in a cylindrical shape.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Kim, Youngseok& Hwang, Bumsik& Cho, Wanjei. 2018. Development of Ground Freezing System for Undisturbed Sampling of Granular Soils. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1115417
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Kim, Youngseok…[et al.]. Development of Ground Freezing System for Undisturbed Sampling of Granular Soils. Advances in Civil Engineering No. 2018 (2018), pp.1-13.
https://search.emarefa.net/detail/BIM-1115417
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Kim, Youngseok& Hwang, Bumsik& Cho, Wanjei. Development of Ground Freezing System for Undisturbed Sampling of Granular Soils. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1115417
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1115417
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر