Performance of Bio Concrete by Using Bacillus Pasteurii Bacteria

A Live Concrete Self-recovering Agent Rifts in Concrete Abrasion of Steel Area Repair Rate.

Authors

  • Gehad A. M. Metwally
    gh4.1992@gmail.com
    Researcher at Structural Engineering Department, Faculty of Engineering, Mansoura University, Mansoura,, Egypt
  • Mohamed Mahdy Professor and Vice-dean for Students and Education Affairs, Faculty of Engineering, Mansoura University, Mansoura,, Egypt
  • Ahmed El-Raheem H. Abd El-Raheem Professor of a Structural Engineering Department, Faculty of Engineering, Mansoura University, Mansoura,, Egypt

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In concrete, cracking is a common phenomenon due to its relatively low tensile strength"Ž "Ž, which occurs due to external loads and imposed deformations"Ž"Ž. The main research objective is to create a kind of self-healing concrete by employing mineral producing bacteria Bacillus pasteurii"Ž to locate the rift in the most favourable circumstances for autogenous healing to take place. Self-healing concrete containing bacteria has been generated for this study through the application of bacterial self-healing elements as "Žspores "Žand nutrients with different percentages of bacteria ranging from (10% - 25%) as a replacement of mixing water is added at the time of pouring. The bacteria influence was observed by Scanning Electron Microscope (SEM) and with Energy "ŽDispersive X-ray Spectrometer. The mechanical properties and durability of a thirty-five mixture were "Žexamined. The optimal blending content proportion was "Ž10SF20BC, which showed an increment in compressive strength and flexural strength compared to the control mixture "Žto "Žreach 79.16%, 50% respectively and 24.38% enhancement in sulfate resistance. The highest percentage of calcium carbonate precipitations was "Ž9.49% of a weight of "Žmixtures "Želements, which, in turn, revealed the highest area repair rate, which was able to fill the "Žcrack with widths leads to 0.80 mm.