Performance of Bio Concrete by Using Bacillus Pasteurii Bacteria
| Autor: | Ahmed El-Raheem H. Abd El-Raheem, Gehad A. M. Metwally, Mohamed G. Mahdy |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Materials science biology Scanning electron microscope 02 engineering and technology Building and Construction 010402 general chemistry 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology biology.organism_classification 01 natural sciences Durability 0104 chemical sciences chemistry.chemical_compound Compressive strength Calcium carbonate chemistry Flexural strength Ultimate tensile strength Composite material Sulfate 0210 nano-technology Bacteria Civil and Structural Engineering |
| Zdroj: | Civil Engineering Journal. 6:1443-1456 |
| ISSN: | 2476-3055 2676-6957 |
| Popis: | In concrete, cracking is a common phenomenon due to its relatively low tensile strength , which occurs due to external loads and imposed deformations. The main research objective is to create a kind of self-healing concrete by employing mineral producing bacteria Bacillus pasteurii 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 spores and 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 Dispersive X-ray Spectrometer. The mechanical properties and durability of a thirty-five mixture were examined. The optimal blending content proportion was 10SF20BC, which showed an increment in compressive strength and flexural strength compared to the control mixture to reach 79.16%, 50% respectively and 24.38% enhancement in sulfate resistance. The highest percentage of calcium carbonate precipitations was 9.49% of a weight of mixtures elements, which, in turn, revealed the highest area repair rate, which was able to fill the crack with widths leads to 0.80 mm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|