ارزیابی آزمایشگاهی اثر صمغ فارسی بر پارامترهای مقاومتی سطوح تماس مختلف خاک-سازه

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشکده مهندسی عمران، دانشگاه صنعتی اصفهان

چکیده

ارزیابی رفتار مکانیکی سطح تماس خاک-سازه به عنوان یک عامل موثر بر عملکرد مقاومتی و تغییر شکل سازه، مورد توجه بسیاری از محققان قرار گرفته است. با توجه به تاثیر برهم‌کنش سازه و لایه‌ی خاک اطراف آن بر ظرفیت باربری خاک ، مطالعه‌ی شرایط فیزیکی ناحیه فوق امری مهم می‌باشد. در این پژوهش با در نظر گرفتن مدت زمان عمل آوری، اثر استفاده از صمغ فارسی و میزان زبری فولاد در رفتار سطح تماس خاک- سازه به وسیله دستگاه برش مستقیم بزرگ مقیاس مورد بررسی قرار گرفته است. صمغ مصرفی در سه میزان 3/0، 6/0 و 9/0 درصد بر روی سه سطح صیقلی، زبر و پوشیده شده با ژئوتکستایل استفاده شد. بر اساس نتایج با تزریق صمغ فارسی به سطح تماس خاک-شمع، چسبندگی بین خاک و سطح تماس تا حدود 20 برابر و زاویه اصطکاک داخلی به میزان یک درجه افزایش می‌یابد. نرخ افزایش پارامترهای مقاومتی با زیاد شدن مدت زمان عمل‌آوری کاهش می‌یابد.

کلیدواژه‌ها

عنوان مقاله [English]

Laboratory Evaluation of the Effect of Persian Gum on the Strength Parameters of Different Soil-Structure Interfaces

نویسندگان [English]

  • Mohammad Milad Shirazi Nejad
  • Mohammadreza Khanmohammadi
  • Hamid Hashemolhosseini
Department of Civil Engineering, Isfahan University of Technology
چکیده [English]

Evaluation of mechanical behavior of the soil-structure interface has been the focus of many researchers as an effective factor on the strength performance and deformation of the structure. Since the interaction of the structure and the soils around it will have a great impact on the soil bearing capacity, it is important to study the physical conditions. In this study, taking into account the curing time, effect of using Persian gum and the roughness of the steel on the behavior of the soil-structure interface using large-scale direct shear test have been investigated. The Persian gum was used in three amounts of 0.3, 0.6 and 0.9% on three smooth, rough and geotextile covered surfaces. Based on the results, by injecting Persian gum into the soil-candle interface, the adhesion between soil and contact surface increases by about 20 times and the internal friction angle increases by one degree. The rate of increase of strength parameters decreases with increasing curing time.

کلیدواژه‌ها [English]

  • Soil-structure interface
  • Persian gum
  • Curing time
  • Roughness
  • large-scale direct shear test

مراجع

  1. Potts, Mesopotamian civilization: the material foundations: A&C Black; 1997.
  2. Jahani, Amir, A. Raeesi Estabragh, H. Khajepour, M. Amini, “ Comparison of the Effect of Cement, Ground Granulated Blast-Furnace Slag (GGBS), and Activated GGBS on Stabilization of a Clay Soil,”  Ferdowsi Civil Engineering, vol. 35 (3), pp. 89-106 https://doi.org/10.22067/jfcei.2022.74908.1115
  3. E . Evgin, K. Fakharian, “ Effect of stress paths on the behaviour of sand steel interfaces,” Canadian geotechnical journal, vol. 33(6), pp. 853-65. https://doi.org/10.1139/t96-116-336
  4. DeJong, ZJ. Westgate, “ Role of initial state, material properties, and confinement condition on local and global soil-structure interface behavior,” Journal of Geotechnical and Geoenvironmental Engineering,vol. 135(11), pp. 1646-60. 2009. https://doi.org/10.1061/(ASCE)1090-0241(2009)135:11(1646)
  5. Hu, J. Pu, “ Testing and modeling of soil-structure interface,” Journal of Geotechnical and Geoenvironmental Engineering, vol. 130(8), pp. 851-60. 2004.https://doi.org/10.1061/(ASCE)1090-0241(2004)130:8(851)
  6. Kishida, M. Uesugi, “ Tests of the interface between sand and steel in the simple shear apparatus,” Géotechnique, vol. 37(1), pp. 45-52. 1987.  https://doi.org/10.1680/geot.1987.37.1.45
  7. Lings, M. Dietz, “ The peak strength of sand-steel interfaces and the role of dilation. Soils and foundations,” vol. 45(6), pp. 1-142005. . https://doi.org/10.3208/sandf.45.1
  8. Porcino, V. Fioravante, V. N. Ghionna, S. Pedroni, “ Interface behavior of sands from constant normal stiffness direct shear tests,” Geotechnical Testing Journal, vol. 26(3), pp. 289-301. 2003. http://dx.doi.org/10.1520/GTJ11308J
  9. Rezvani, M. Azizi, P. Nopars, A. Nabizadeh, “ Evaluating the Effects of Lime and Nano-Lime on Compaction and Strength Properties of Chaloos Coastal Sand,” Ferdowsi Civil Engineering, vol. 33 (2), pp. 55-70, 2021.https://doi.org/10.22067/civil.v33i2.85864
  10. Russell, M. Pournaghiazar, N. Khalili, “ editors. Interpreting CPT results in unsaturated sands,” 2nd International Symposium on Cone Penetration Testing, Huntington Beach, CA, USA, 2010.
  11. Sedran, G., 1999. Experimental and analytical study of a frustum cnfining vessel. A Thesis Submitted to the School of Graduate Studies in Partial Fulfïlment of the Requirements for the Degree Doctor of Philosophy, McMaster Unv, Canada..
  12. G. Horvath, D. Stolle. “Frustum confining vessel for testing model piles,” Canadian Geotechnical Journal, vol. 33(3), pp. 499-504, 1996. https://doi.org/10.1139/t96-071
  13. Mullins, S. Dapp, E. Fredrerick, Wagner RJFRSFDoT. Pressure grouting drilled shaft tips—Phase I final report. 2001.
  14. Karimi, A. Eslami, M. Zarrabi, J. Khazaei, “ Study of pile behavior by improvement of confining soils using frustum confining vessel,” Scientia Iranica, vol. 24 (4), pp. 1874-1882.2017. https://doi.org/10.24200/sci.2017.4278,
  15. Mehrshahi, H. Alielahi, “ Estimating the Geotechnical Design Pararameters of Improved Soil by Preloading Method Using Instrumentation Results and Numerical Approach- a Case Study,” Ferdowsi Civil Engineering, vol. 30 (1), pp. 13-30, 2018. https://doi.org/10.22067/civil.v1i30.52137
  16. Potts, Mesopotamian civilization: the material foundations: A&C Black, 1997.
  17. Sherwood, Soil stabilization with cement and lime, 1993.
  18. F. Taylor, Cement chemistry: Thomas Telford London, 1997.
  19. Amini, A. Raeesi Estabragh, J. Abdollahi, “ Improvement the Behaviors of a Clay Soil Contaminated with Phenanthrene by Using MgO,” Ferdowsi Civil Engineering, vol. 34 (3), pp. 53-66, 2021. https://doi.org/10.22067/jfcei.2022.71848.1055
  20. Ward, “ The orientation of polymers to produce high performance materials,” Polymer Grid Reinforcement: Thomas Telford Publishing, pp. 4-10, 1984.
  21. J. Barrett, “ Use of plastic filters in coastal structures,” Coastal Engineering Proceedings, vol. 1 (10), 1966. https://doi.org/10.9753/icce.v10.61
  22. Ghasemzadeh, F. Modiri, “ Application of novel Persian gum hydrocolloid in soil stabilization,” Carbohydrate Polymers, 246:116639. 2020. https://doi.org/10.1016/j.carbpol.2020.116639
  23. Abbasi, “ Persian gum: a novel natural hydrocolloid,” Nutrition and Food Sciences Research, vol. 4(1), pp. 1-2, 2017.
  24. Abbasi, “ Challenges towards characterization and applications of a novel hydrocolloid: Persian gum,” Current Opinion in Colloid & Interface Science, 28:37-45, 2017. https://doi.org/10.1016/j.cocis.2017.03.001
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مهندسی عمران فردوسی
دوره 36، شماره 4
دی 1402
صفحه 95-108

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