Investigating the effectiveness of a bacterial self-healing mechanism for repairing cracks in sustainable cement mortar at low temperatures

Faculty Engineering Year: 2025
Type of Publication: ZU Hosted Pages:
Authors:
Selem Saleh Elsayed Ahmed Dawod
Journal: Results in Engineering Elsevier Volume:
Keywords : Investigating , effectiveness , , bacterial self-healing mechanism , repairing    
Abstract:
Mortar forms a fundamental constituent of concrete, resulting in similar behavior and drawbacks between them. In this study, we investigate one of these drawbacks (cracks). This study investigates bacterial self-healing efficiency at different temperatures RT (24°C), Zero, and Sub-Zero (-16 ± 2 °C, and – RT, (- 24 °C)), bacteria type, concentration, and percent on self-healing of cracks in cement mortar. The two distinct strains of bacteria were Bacillus Megaterium (BM) and Bacillus Sphaericus (BS), with varying concentrations of 0 %, 1%, and 2.5%. The efficiency of the bacterial strains was evaluated using a variety of techniques, such as compressive and flexural strength tests, energy-dispersive spectroscopy (EDS), scanning electron microscopy (SEM), and X-ray diffraction (XRD). It was observed that RT and Zero temperature at 2.5 % of BS or BM had the same behavior for crack-healing efficiency by 100% with an …
    
     
 
       

Author Related Publications

  • Selem Saleh Elsayed Ahmed Dawod, "Mechanical properties of sustainable concrete comprising various wastes", Springer, 2023 More
  • Selem Saleh Elsayed Ahmed Dawod, "Mechanical behavior of concrete at different levels of compressive strength", Fourth International Conference On Civil And Architecture Engineering, 2002 More
  • Selem Saleh Elsayed Ahmed Dawod, "Correlation the effect of beam size and crack-depth ratio in concrete by using a modified stress intensity factor", Al-Mansoura Engineering International Conference, --- , Sharm Elsheikh, EGYP, 2003 More
  • Selem Saleh Elsayed Ahmed Dawod, "Mechanical behavior of high strength concrete reinforced by different types of fibers", Al-Azhar Engineering Seven International Conference, April 2003, Cairo, EGYPT., 2003 More
  • Selem Saleh Elsayed Ahmed Dawod, "Sulfate attack on concrete from mixing and curing water", Al-Azhar Engineering Seven International Conference, April 2003, Cairo, EGYPT., 2004 More

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  • Ahmed Mohamed Hassan Ali Youssief, "Densification behavior and mechanical properties of niobium-oxide-doped alumina ceramics", Goller Verlag, 2013 More
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  • Selem Saleh Elsayed Ahmed Dawod, "Contribution of retardation mechanisms on the behaviour of fatigue crack growth in steel structures", 1st International Conference in Civil Engineering, Helwan University, Egypt, pp.172-182., 1998 More
  • Selem Saleh Elsayed Ahmed Dawod, "Effect of coarse aggregate type on the mechanical behavior of high strength concrete", 5th International Conference in Building materials and structural Engineering, Academy of Graduate Studies, Tripoli, Libya, pp.140-151. 2010., 2010 More
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