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The Effect of Replacing the Natural concrete aggregate with Recycled aggregate on its Physical and Mechanical Properties

تأثير استبدال حصويات البيتون بحصويات الأنقاض المعاد تدويرها في خصائصه الفيزيائية و الميكانيكية

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 Publication date 2015
and research's language is العربية
 Created by Shamra Editor




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The accelerated structural expansion in most countries has resulted in a major problem related to providing the necessary concrete for these buildings. Besides, the buildings that have become out of service recently has posed a real problem represented in demolishing them creating a large amount of hard-to-manage aggregate. The necessity to get rid of the aggregate have opened up the possibilities for attempting to use it as a relative substitute for the natural aggregate. The research focuses on recycling these aggregate in an attempt to use them in producing concrete and other construction materials. The research deals with one of the mechanisms of benefiting from these recycled aggregate through using them in producing concrete through treating the aggregate produced from demolition, and mixing them in quantities that reflect their actual ratio. The results are of great importance economically and environmentally.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة تأثير استبدال الحصويات الطبيعية في البيتون بحصويات الأنقاض المعاد تدويرها على خصائصه الفيزيائية والميكانيكية. تبرز أهمية البحث في ظل التوسع العمراني المتسارع والحاجة إلى مواد أولية لإنتاج البيتون، بالإضافة إلى مشكلة إدارة الأنقاض الناتجة عن هدم المباني. تم استخدام حصويات الأنقاض في سوريا بشكل محدود، ولكن البحث يهدف إلى استكشاف إمكانية استخدامها كبديل للحصويات الطبيعية في البيتون. أظهرت النتائج أن استبدال الحصويات الطبيعية بحصويات الأنقاض بنسبة تصل إلى 50% يمكن أن ينتج بيتوناً بخصائص مقبولة، حيث سجلت قيم للمقاومات المكعبية أكبر من 300kg/cm². كما أشارت الدراسة إلى الفوائد الاقتصادية والبيئية لاستخدام الحصويات المعاد تدويرها، مثل تقليل النفايات والحفاظ على الموارد الطبيعية.
Critical review
تعتبر هذه الدراسة خطوة مهمة نحو الاستدامة في قطاع البناء، حيث تسلط الضوء على إمكانية إعادة استخدام الأنقاض في إنتاج البيتون. ومع ذلك، يمكن توجيه بعض النقد البناء للدراسة. أولاً، لم تتناول الدراسة بشكل كافٍ تأثيرات طويلة الأمد لاستخدام الحصويات المعاد تدويرها على ديمومة البيتون. ثانياً، كان من الممكن توسيع نطاق الدراسة ليشمل تجارب ميدانية فعلية بدلاً من الاعتماد فقط على التجارب المخبرية. ثالثاً، لم يتم التطرق بشكل كافٍ إلى التحديات اللوجستية والاقتصادية المتعلقة بجمع ومعالجة الأنقاض. على الرغم من هذه النقاط، فإن الدراسة تفتح آفاقاً جديدة لاستخدام المواد المعاد تدويرها في البناء وتساهم في الحفاظ على البيئة.
Questions related to the research
  1. ما هي النسبة المقبولة لاستبدال الحصويات الطبيعية بحصويات الأنقاض المعاد تدويرها في البيتون؟

    النسبة المقبولة للاستبدال يمكن أن تصل إلى 50% مع تسجيل قيم للمقاومات المكعبية أكبر من 300kg/cm².

  2. ما هي الفوائد الاقتصادية والبيئية لاستخدام الحصويات المعاد تدويرها؟

    الفوائد تشمل تقليل النفايات الناتجة عن هدم المباني، الحفاظ على الموارد الطبيعية، وتقليل التلوث البصري.

  3. ما هي التحديات التي يمكن أن تواجه استخدام الحصويات المعاد تدويرها في البيتون؟

    التحديات تشمل التأثيرات طويلة الأمد على ديمومة البيتون، التحديات اللوجستية والاقتصادية المتعلقة بجمع ومعالجة الأنقاض، وشره الحصويات المعاد تدويرها للماء.

  4. ما هي الخصائص التي تم دراستها في البيتون الناتج عن استخدام الحصويات المعاد تدويرها؟

    تم دراسة الخصائص الفيزيائية والميكانيكية للبيتون، بما في ذلك المقاومة على الضغط البسيط، درجة التشرب، وديمومة البيتون.


References used
NELSON,S. High-Strength structural concrete with recycled aggregates, ،University of Southern Queensland، 2004،112
Rao .A ,Jba , K .N .and Misra S .Use of aggregate from recycled construction and demolition waste in concrete , Journal of Resources , Conservation and Recycling . 50(2007), 71-81
BARON, J. , OLIVIER, J. P.Les bétons, bases et données pour leur formulation, Eyrolles, Paris, 1999, 522
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