A binary concrete crack self-healing system containing oxygen-releasing tablet and bacteria and its Ca-precipitation performance
Applied Microbiology and Biotechnology, ISSN: 1432-0614, Vol: 100, Issue: 24, Page: 10295-10306
2016
- 49Citations
- 100Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations49
- Citation Indexes49
- 49
- CrossRef12
- Captures100
- Readers100
- 100
Article Description
A strategy to supply molecular oxygen for microbial calcium precipitation was developed for the first time. Firstly, a controlled oxygen-releasing tablet (ORT) containing CaO and lactic acid with a suitable ratio of 9:1 was developed. It can provide a stable oxygen supply and maintain pH in the range of 9.5–11.0 for 45 days while contacting with water. In the presence of oxygen, a self-healing bacterium H4 spores germinated more effectively and maintained high metabolic activity. Furthermore, H4 vegetative cells induced 50 % more calcium precipitation than that obtained without oxygen supply. Finally, a binary self-healing system containing bacterial spores and ORT was established. The calcium precipitation experiments showed that H4 in the binary self-healing system precipitated 27.5 mM calcium with oxygen supply after 32 days and dissolved oxygen (DO) concentration of the solution decreased from 15 to 4 mg l, while only 6.9 mM calcium precipitation was obtained without oxygen supply. This work can disclose the effect of oxygen on microbial calcium precipitation and further lay a foundation for the establishment of ternary self-healing system containing bacteria, ORT, and nutrients, which will be promising for the self-healing of cracks deep inside the concrete structure.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84979663084&origin=inward; http://dx.doi.org/10.1007/s00253-016-7741-z; http://www.ncbi.nlm.nih.gov/pubmed/27459869; http://link.springer.com/10.1007/s00253-016-7741-z; https://dx.doi.org/10.1007/s00253-016-7741-z; https://link.springer.com/article/10.1007/s00253-016-7741-z
Springer Science and Business Media LLC
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