تأثير البولي انيلين النانوي والرماد المتطاير على الخواص الهندسية للطوب اللبن بمنطقة الساحل الشمالي في مصر

نوع المستند : Original Article

المؤلفون

1 استاذ مساعد، قسم الهندسة الزراعية والنظم الحيوية - كلية الزراعة - جامعة الإسكندرية - مصر.

2 استاذ متفرغ، قسم الهندسة الزراعية والنظم الحيوية - كلية الزراعة - جامعة الإسكندرية - مصر.

3 استاذ مساعد، قسم الهندسة الزراعية، كلية الزراعة - جامعة الزقازيق – مصر.

4 دكتوراه، قسم الهندسة الزراعية والنظم الحيوية - كلية الزراعة - جامعة الإسكندرية - مصر.

5 مدرس، قسم الهندسة الزراعية والنظم الحيوية - كلية الزراعة - جامعة الإسكندرية - مصر.

المستخلص

تصف هذه الورقة بحثًا تجريبيًا حول تحسين خواص الطوب اللبن المصنع من التربة باستخدام الرماد المتطاير (FA)  و البولي انيليتن النانوي (PA) عن طريق تفاعل البلمرة باستخدام محلول قلوي (AM) يتكون من خلط محلول هيدروكسيد الصوديوم ومحلول سيليكات الصوديوم. حيث تم تثبيت مولارية محلول هيدروكسيد الصوديوم عند 14 مول كما تم تثبيت نسبة محلول سيليكات الصوديوم إلى محلول هيدروكسيد الصوديوم عند 1.5. يتناول البحث دراسة الخواص الهندسية لأربعة خلطات اساسية للطوب الجيوليمري GSAC وهي :  الخلطة الاولي (خليط التحكم  (T1يتكون من التربة و ماء الخلط
(NS &   (Water؛ الخلطة الثانية T2  تتكون من التربة  و المحلول القلوي
) NA & (AM؛ الخلطة الثالثة  T3 تتكون من التربة و الرماد المتطاير
و المحلول القلوي   (NS, FA&AM) و الخلطة الرابعة T4 وتتكون من التربة و الرماد المتطاير و البولي انيلين و المحلول القاوي ( NS, FA, PA,& AM) . تم دراسة كل من مقاومة الضغط ومعدل تشرب المياه والتغير في الكثافة بالإضافة الي التغير في التركيب البنائي باستخدام الميكروسكوب الالكتروني. وقد لوحظ وجود تأثيرات معنوية في جميع الصفات المدروسة. وقد اظهرت النتائج ما يلي : ان الخليط المكون من  ( NS, FA, PA,& AM) اعطي اعلي قيمة لكل من مقاومة الضغط والكثافة ( 7.8 نيوتن/مم2 و2.28 جم/سم3، على التوالي). كما اظهر نفس الخليط ادني معدل امتصاص للماء حيث بلغ معدل الامتصاص 2.02% و3.11% بعد 2 و24 ساعة من النقع في الماء، على التوالي. كما أظهرت نتائج تحليل البنية المجهرية تحت الميكروسكوب الالكتروني ان الخلطة الرابعة هي أفضل تركيب بنائي مع أقل مسامية.

الكلمات الرئيسية

الموضوعات الرئيسية

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