تثبیت یک خاک رسی به روش الکتروکنتیک با استفاده از محلول کلسیم کلرید

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه مهندسی آبیاری و آبادانی، دانشکده مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران

2 دانشیار، گروه مهندسی آبیاری و آبادانی، دانشکده مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران

3 مربی، گروه مهندسی آبیاری و آبادانی، دانشکده مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران

4 استادیار، گروه مهندسی علوم دامی، دانشکده علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران

5 کارشناس آزمایشگاه، گروه مهندسی آبیاری و آبادانی، دانشکده مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران

چکیده

در این پژوهش بهسازی یک خاک رسی با افزودن یون کلسیم به روش الکتروکنتیک در آزمایشگاه مورد مطالعه قرار گرفت. آزمایش­ها در یک دستگاه مخصوص ابتدا با استفاده از آب مقطر به عنوان آزمایش مرجع و سپس با محلول کلسیم کلرید با غلظت‌های 25/0، 5/0، 1 و 5/1 مولار به‌عنوان مایع مخزن آند تحت تأثیر ولتاژ 52 ولت در مدت 7 روز مورد آزمایش قرار گرفت. در طول انجام آزمایش مقدار pH برای مایع مخازن آند و کاتد و نیز حجم آب خروجی از مخزن کاتد در فواصل زمانی مشخص اندازه‌گیری شد. پس از اتمام آزمایش، مقاومت برشی خاک در فواصل مختلف از قطب آند مورد اندازه‌گیری قرار گرفت. نتایج نشان داد تزریق یون کلسیم به داخل خاک موجب افزایش مقاومت خاک می‌شود و مقدار آن نیز وابسته به غلظت محلول کلسیم کلرید می‌باشد به گونه‌ای که افزایش مقاومت تابعی از افزایش غلظت محلول کلسیم کلرید است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Stabilization of clay soil by electrokinetic method with CaCl2 solution

نویسندگان [English]

  • mohammad moghadas 1
  • Ali Raeesi Estabragh 2
  • Jamal Abdolahi Baik 3
  • Fateme Ghaziani 4
  • Ali Vakili 5
1 MSc Student, Department of irrigation and reclamation Engineering, Faculty of Agricultural Engineering and Technology, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
2 Associate Professor, Department of irrigation and reclamation Engineering, Faculty of Agricultural Engineering and Technology, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
3 Lecturer, Department of irrigation and reclamation Engineering, Faculty of Agricultural Engineering and Technology, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
4 Assistant Professor, Department of Animal Science, Faculty of Agricultural Sciences and Engineering, Faculty of Agricultural Engineering and Technology, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
5 Laboratory Technician, Department of irrigation and reclamation Engineering, Faculty of Agricultural Engineering and Technology, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
چکیده [English]

In this research, laboratory studies were carried out to improve a clay soil by adding calcium ion through Electrokinetic method Experiments were performed in a special device using distilled water firstly, as the reference test and calcium chloride solution with the concentration of 0.25, 0.5, 1 and 1.5 molar secondly, as an anode reservoir fluid under the influence of 52-volt voltage during 7 days. During the experiment, the pH value was measured for electrolyte at the anode and cathode reservoir. Also, volume of water discharged from the cathode reservoir was measured at a given time interval. After the tests, shear strength of the soil was measured at different distances from the anode. The results showed that the calcium injection into the soil increases shear strength of the soil, and its amount depends on the concentration of calcium chloride solution, so shear strength increases by increasing concentration of the calcium chloride solution.

کلیدواژه‌ها [English]

  • Electrokinetic
  • Soil Stabilization
  • ionic injection
  • shear strength
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