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Register a new userThe effect of temperature on a soil mixture (clay-sand) to be used as a liner in solid waste landfill sites
تأثير درجات الحرارة على مزيج تربة (غضار-رمل) لاستخدامها كبطانة في مواقع ردم النفايات الصلبة
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في هذا البحث تمت دراسة تأثيرات ارتفاع درجات الحرارة على التشوهات الحجمية الحاصلة في ثلاثة أنواع من الترب الغضارية المحلية بعد إضافة نسب مختلفة من الرمل لكل تربة ( 10,20,30,40,50 )% كنسب وزنية من التربة المدروسة عند تغير درجات الحرارة من ( 20-60 ) درجة مئوية لاستخدامها كبطانات في مواقع ردم النفايات الصلبة، بينت نتائج الدراسة أن مزج الرمل مع الغضار لعب دورا هاماً في تخفيض مقدار التشوهات الحجمية عند ارتفاع درجات الحرارة بمقدار يتراوح بين ( 24-27%) من قيمة التشوهات.
In this study, the effect of temperature on volume strains in three types of local clay soils was studied after adding different percentages of sand for each soil (10%-20%-30%40%-50%) when temperatures change from (20-60)° C to be used as liners in solid waste landfill sites . The results of the study showed that the mixing of sand with the clay played a key role in reducing the magnitude of volume strains between (24-27%) of the value of strains.
Artificial intelligence review:
Research summary
تتناول هذه الدراسة تأثير درجات الحرارة على مزيج من التربة الغضارية والرملية لاستخدامها كبطانة في مواقع ردم النفايات الصلبة. تم اختبار ثلاثة أنواع من الترب الغضارية المحلية بعد إضافة نسب مختلفة من الرمل (10%، 20%، 30%، 40%، 50%) عند درجات حرارة تتراوح بين 20-60 درجة مئوية. أظهرت النتائج أن مزج الرمل مع الغضار يقلل من التشوهات الحجمية الناتجة عن ارتفاع درجات الحرارة بنسبة تتراوح بين 24-27%. تم استخدام خلية أدومتر مطورة لقياس التشوهات الحجمية تحت تأثير درجات الحرارة المختلفة. كما تم إيجاد علاقات رياضية تجريبية تربط بين نسبة الرمل المضاف والتشوه الحجمي للترب المدروسة. توصي الدراسة باستخدام التربة الغضارية منخفضة اللدونة في تصميم مواقع ردم النفايات الصلبة.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة جداً في مجال الهندسة الجيوتكنيكية، حيث تقدم حلاً عملياً لمشكلة التشوهات الحجمية في بطانات مواقع ردم النفايات الصلبة. ومع ذلك، يمكن أن تكون الدراسة أكثر شمولية إذا تم تضمين تأثيرات أخرى مثل التفاعلات الكيميائية بين مكونات التربة والرشاحة. كما أن الدراسة تفتقر إلى تحليل اقتصادي لتكلفة استخدام الرمل كمادة مضافة، وهو جانب مهم يجب مراعاته في التطبيقات العملية.
Questions related to the research
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ما هو الهدف الرئيسي من هذه الدراسة؟
الهدف الرئيسي هو دراسة تأثير درجات الحرارة على التشوهات الحجمية في مزيج من التربة الغضارية والرملية لاستخدامها كبطانة في مواقع ردم النفايات الصلبة.
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ما هي النسب المختلفة من الرمل التي تم إضافتها للتربة الغضارية في الدراسة؟
تم إضافة نسب مختلفة من الرمل وهي 10%، 20%، 30%، 40%، 50%.
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ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟
أظهرت النتائج أن مزج الرمل مع الغضار يقلل من التشوهات الحجمية الناتجة عن ارتفاع درجات الحرارة بنسبة تتراوح بين 24-27%.
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ما هي التوصيات التي قدمتها الدراسة؟
توصي الدراسة باستخدام التربة الغضارية منخفضة اللدونة في تصميم مواقع ردم النفايات الصلبة، وأهمية دراسة تأثير تغير درجات الحرارة على معامل النفاذية للترب المختبرة.
References used
Rowe,R.K., Sangam, H. P., and Lake, C.B., (2003). “Evaluation of an HDPE geomembrane after 14 years as aleachate lagoon liner”. Canadian Geotechnical J., 40, pp. 536-550
Koerner G. (2001) In Situ Temperature Monitoring of Geosynthetics used in a Landfill Geotechnical Fabrics Report May 2001, pp12-13
Klein R., Baumann T., Kahapka E. & Niessner R. (2001) Temperature Development in a Modern Municipal Solid Waste Incineration (MSWI) Bottom Ash Landfill with regard to Sustainable Waste Management, Journal of Hazardous Materials, B83, pp265-280
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