پیش بینی مقاومت خاک-سیمان بهسازی شده با رزین بوسیله مدل رگرسیونی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه تهران

2 دانشکده مهندسی و فناوری کشاورزی پردیس کشاورزی و منابع طبیعی دانشگاه تهران

چکیده

در این تحقیق تاثیر سیمان و سه نوع رزین تجاری با درصد ها و زمان های عمل آوری متفاوت در بهسازی یک خاک چسبنده مورد بررسی قرار گرفت .نمونه های آزمایشگاهی خاک - سیمان (8% و 12% درصد سیمان) و خاک-سیمان -رزین (سه نوع رزین TB701 , R83 , R73هرکدام با درصد های 5% و 8% و 10%) بر اساس رطوبت اپتیمم و در وزن واحد حجم ماکزیمم منحنی تراکم ساخته شدند . آزمایش های مقاومت فشاری در زمان های عمل آوری مختلف (3 روزه،7 روزه ، 28 روزه) روی نمونه ها انجام شد .علاوه بر آن یک مدل رگرسیونی براساس داده های آزمایشگاهی جهت پیش بینی مقاومت نمونه ها در شرایط مختلف تدوین گردید .نتایج نشان داد افزودن رزین موجب افزایش مقاومت خاک-سیمان می گردد و این افزایش مقاومت تابعی از درصد سیمان ، درصد رزین ، زمان عمل آوری و لزجت رزین می باشد . مقایسه نتایج آزمایشگاهی با نتایج پیش بینی شده توسط مدل رگرسیونی پیشنهادی نشان داد که همبستگی میان آن ها در حد قابل قبولی است .

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Regression model for predicting the compressive strength of treated soil-cement with resin.

نویسندگان [English]

  • Mahmoud Babalar 1
  • Ali Raeisi Estabragh 2
  • Iman Beitollahpoor 2
  • Amin Soltani 2
1 University of Tehran
2
چکیده [English]

The effect of resin on treatment of soil-cement was studied through experimental tests. Three kinds of commercial resins with different percentage weights were used within the study.  Test samples were made of mixtures of soil with different percentage weights of cement (8 % and 12%) and mixing of soil-cement with different percentage contents of resin (5, 8 and 10%). Unconfined compression tests were conducted on the prepared samples at different curing times. Results indicated that adding resin to soil-cement causes increase in the strength of the mixture. In addition, an increase in the strength is a function of percent cement content, resin percentage, type of resin (viscosity of the resin) as well as curing time. A regression model was proposed as based on the experimental data for predicting the compressive strength. The regression model consisted of percentage content cement percent resin, kind of resin (resin viscosity) as well as curing time as variables. A comparison between the model predictions and the experimental results reveals that the proposed models can satisfactorily predict the compressive strength as regards soil-cement resin mixtures.

کلیدواژه‌ها [English]

  • Soil improvement
  • Soil-cement-resin
  • compressive strength
  • Regression model

مراجع

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تحقیقات آب و خاک ایران
دوره 47، شماره 1
اردیبهشت 1395
صفحه 197-204

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