IMPROVEMENT OF RIGID PAVEMENT PERFORMANCE USING MICROBIAL AGENT
abdelfatah, H., Tawhed, W., Ouf, M., Elsherbiny, G., Kalaba, M., Mostafa, A. (2022). IMPROVEMENT OF RIGID PAVEMENT PERFORMANCE USING MICROBIAL AGENT. EKB Journal Management System, 17(63), 539-548. doi: 10.21608/auej.2022.233758
hala hashem abdelfatah; Waleed. M. F. Tawhed; Mohamed S Ouf; Gamal. M. E. Elsherbiny; Mohamed. H. A. Kalaba; Abdelzaher. E. A. Mostafa. "IMPROVEMENT OF RIGID PAVEMENT PERFORMANCE USING MICROBIAL AGENT". EKB Journal Management System, 17, 63, 2022, 539-548. doi: 10.21608/auej.2022.233758
abdelfatah, H., Tawhed, W., Ouf, M., Elsherbiny, G., Kalaba, M., Mostafa, A. (2022). 'IMPROVEMENT OF RIGID PAVEMENT PERFORMANCE USING MICROBIAL AGENT', EKB Journal Management System, 17(63), pp. 539-548. doi: 10.21608/auej.2022.233758
abdelfatah, H., Tawhed, W., Ouf, M., Elsherbiny, G., Kalaba, M., Mostafa, A. IMPROVEMENT OF RIGID PAVEMENT PERFORMANCE USING MICROBIAL AGENT. EKB Journal Management System, 2022; 17(63): 539-548. doi: 10.21608/auej.2022.233758

IMPROVEMENT OF RIGID PAVEMENT PERFORMANCE USING MICROBIAL AGENT

Journal of Al-Azhar University Engineering Sector
Article 6, Volume 17, Issue 63, April 2022, Page 539-548  XML PDF (847.46 K)
Document Type: Original Article
DOI: 10.21608/auej.2022.233758
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Authors
hala hashem abdelfatah1; Waleed. M. F. Tawhed2; Mohamed S Ouf2; Gamal. M. E. Elsherbiny3; Mohamed. H. A. Kalaba3; Abdelzaher. E. A. Mostafa4
1Civil Engineering, Mataria Institute, High Ministry of Education, Cairo, Egypt.
2Civil Engineering, Mataria School of Engineering, Helwan University, Cairo, Egypt.
3Botany and Microbiology Department, Faculty of Science (Boys), Al-Azhar University, Cairo, Egypt.
4Civil Engineering, Mataria School of Engineering, Helwan University, Cairo, Egypt
Abstract
Cracking is the most difficult problem for rigid pavement, not only because it affects the mechanical properties, but also because it affects the road's durability and service life. This paper aims to improve the rigid pavement efficiency, as well as construct a bacterial consortium that can make the concrete to repair itself. A concrete slab with dimensions of 750 x 750 x 200 mm was used in a laboratory case study. Bacillus flexus MK-FYT-3 and Bacillus haynesii MK-NW-9 were identified using 16s as Bacillus flexus MK-FYT-3 and Bacillus haynesii MK-NW-9, respectively, for the laboratory bio-concrete mixture and deposited to GenBank under accession numbers MN965692 and MN965693. These isolates were able to grow at 60 °C with an optimum temperature of 40 °C, showed an ideal growth at pH of 10, and were capable of producing CaCO3. Under static loading, the bio-concrete slab performed significantly better than the control one.
 
تعتبرالشروخ من أصعب المشاکل التى تواجه الرصف الصلب ، ليس فقط ألنه يقلل من الخصائص الميکانيکية ، ولکن أي ًضا ألنه يؤثر على متانة الطريق وعمر الخدمة. تهدف هذه الدراسة الى تحسين کفاءة الرصف الصلب ، باإلضافة إلى إنشاء اتحاد بکتيري يمکنه . استخدام بالطات خرسانية بأبعاد العمل مع الخرسانة لمعالجه نفسها ذاتيا 750 × 750 × 200 مم فى عمل دراسة معملية. کما تم ً باألرقام GenBank قبل من Bacillus haynesii MK-NW-9 و Bacillus flexus MK-FYT-3 منً کال وتعريف تصنيف المرجعيه االتيه MN965692 و MN965693 ،على التوالى. اثبتت هذه العزالت قدره على النمو عند 60 درجة مئوية مع درجة حرارة مثالية تبلغ 40 درجة مئوية ، وأظهرت نمًوا أمثل عند 10 pH ، وکانت قادرة على إنتاج کربونات الکالسيوم CaCO3 أوضحت النتائج تحت الحمل االستاتيکى، أن البالطات المعالجه بالبکتيريا تعد أفضل من البالطات الخرسانيه العاديه
Keywords
bacterial consortium; cracks; rigid pavement; Bacillus flexus; Bacillus haynesii. اتحاد بکتيري ، شروخ ، رصف صلب ، flexus Bacillus، haynesii Bacillus
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