X-ray computed tomography proof of bacterial-based self-healing in concrete
Source abstract
Abstract
Abstract Self-healing strategies are regarded as a promising solution to reduce the high maintenance and repair cost of concrete infrastructures. In the present work, a bacterial-based self-healing by use of hydrogel encapsulated bacterial spores (bio-hydrogels) was investigated. The crack closure behavior of the specimens with/without bio-hydrogels was studied quantitatively by light microscopy. To have a view of the self-healing inside the specimens, a high resolution X-ray computed microtomography (X-ray μCT) was used. The total amount and the distribution of the healing products in the whole matrix were investigated. This study indicates that the specimens incorporated with bio-hydrogels had distinct improved healing efficiency compared to the reference ones with pure hydrogel only. The healing ratios in the specimens with bio-hydrogels were in the range from 70% to 100% for the cracks smaller than 0.3 mm, which is more than 50% higher than for the ones with pure hydrogel; and the maximum crack bridging was about 0.5 mm (in 7 d), while pure hydrogels only allowed healing of cracks of about 0.18 mm. The total volume ratio of the healing product in the specimens with bio-hydrogels amounted to 2.2%, which was about 60% higher than for the ones with pure hydrogel (1.37%).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microbial Applications in Construction Materials · Grouting, Rheology, and Soil Mechanics · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Van Breugel K. Is there a market for self-healing cement-based materials? In: Schmets AJM, van der S Zwaag, editors. Proceedings of the first international conference on self healing materials. Noordwijk aan Zee, The Netherlands, 18–20 April, 2007.
2. Production of calcite (calcium carbonate) crystals by soil bacteria is a general phenomenon10.1038/246527a0 ↗
3. Applications of bacterial carbonatogenesis to the protection and regeneration of limestones in buildings and historic patrimony10.1016/S0037-0738(99)00029-9 ↗
4. Bio-deposition of a calcium carbonate layer on degraded limestone by Bacillus species10.1007/s10532-005-9006-x ↗
5. Biomediated reinforcement of weathered calcareous stones10.1016/j.culher.2005.10.003 ↗
6. Bacterial carbonate precipitation improves the durability of cementitious materials10.1016/j.cemconres.2008.03.005 ↗
7. Bacterial carbonate precipitation as an alternative surface treatment for concrete10.1016/j.conbuildmat.2006.12.011 ↗
8. Corrosion protection of cement-based building materials by surface deposition of CaCO3 by Bacillus pasteurii10.1016/j.msec.2008.10.025 ↗
9. Microbial carbonate precipitation in construction materials: a review10.1016/j.ecoleng.2009.02.006 ↗
10. Whiffin VS. Microbial CaCO3 precipitation for the production of biocement. PhD thesis. Perth: Murdoch University; 2004.
11. Microbial carbonate precipitation as a soil improvement technique10.1080/01490450701436505 ↗
12. Microbially induced cementation to control sand response to undrained shear10.1061/(ASCE)1090-0241(2006)132:11(1381) ↗
13. Bio-mediated soil improvement10.1016/j.ecoleng.2008.12.029 ↗
14. In situ soil cementation with ureolytic bacteria by surface percolation10.1016/j.ecoleng.2012.01.013 ↗
15. Remediation of concrete using micro-organisms
16. Calcite precipitation induced by polyurethane-immobilized Bacillus pasteurii10.1016/S0141-0229(00)00348-3 ↗
17. Application of bacteria as self-healing agent for the development of sustainable concrete10.1016/j.ecoleng.2008.12.036 ↗
18. Use of bacteria to repair cracks in concrete10.1016/j.cemconres.2009.08.025 ↗
19. Quantification of crack-healing in novel bacteria-based self-healing concrete10.1016/j.cemconcomp.2011.03.012 ↗
20. Use of silica gel or polyurethane immobilized bacteria for self-healing concrete10.1016/j.conbuildmat.2011.06.054 ↗
21. Diatomaceous earth as a protective vehicle for bacteria applied for self-healing concrete10.1007/s10295-011-1037-1 ↗
22. Hydrogels for immobilization of bacteria used in the treatment of metal-contaminated wastes10.1016/S0969-806X(01)00490-X ↗
23. Hydrogel scaffolds with immobilized bacteria for 3D cultures10.1021/cm062882s ↗
24. Dong Y, Zhang Z, Deng Y, Wang Y. Immobilization of nitrifying bacteria in waterborne polyurethane hydrogel for removal of ammonium nitrogen from wastewater. In: 3rd International conference on bioinformatics and biomedical engineering, Beijing; 2009. p. 1–11.10.1109/ICBBE.2009.5162924 ↗
25. Wiktor V, Jonkers HM. Determination of the crack self-healing capacity of bacterial concrete. In: Grantham, Mechtcherine, Schneck, editors. Concrete solutions. London: Taylor & Francis Group; 2012. p. 331–4.10.1201/b11570-47 ↗
26. Monitoring of weathering and conservation of building materials through non-destructive X-ray computed microtomography10.1007/s00254-004-1049-5 ↗
27. Acquisition, optimization and interpretation of X-ray computed tomographic imagery: applications to the geosciences10.1016/S0098-3004(00)00116-3 ↗
28. 3D characterization of sandstone by means of X-ray computed tomography10.1130/GES00563.1 ↗
29. 4D imaging and quantification of pore structure modifications inside natural building stones by means of high resolution X-ray CT10.1016/j.scitotenv.2011.11.018 ↗
30. High-resolution X-ray computed tomography in geosciences: a review of the current technology and applications10.1016/j.earscirev.2013.04.003 ↗
31. Sporulation of Bacillus sphaericus 2297: an electron microscope study of crystal-like inclusion biogenesis and toxicity to mosquito larvae
32. Cross-linkable, thermo-responsive pluronic® building blocks for biomedical applications: sythesis and physico-chemical evaluation10.1016/j.eurpolymj.2014.01.016 ↗
33. NBN EN 196–1. Method of testing cement – Part 1: determination of strength; 2005.
34. UGCT: new X-ray radiography and tomography facility10.1016/j.nima.2007.05.099 ↗
35. Vlassenbroeck J, Dierick M, Masschaele B. Software tools for quantification of X-ray microtomography. In: 10th International symposium on radiation physics. Coimbra, Portugal: Univ Coimbra, Sept 17–22, 2006 (Source: Nucl Instrum Meth A 2007; 580(1):442–445).10.1016/j.nima.2007.05.073 ↗
36. VG Studio Max. .
37. Three-dimensional analysis of high-resolution X-ray computed tomography data with morpho+10.1017/S1431927610094389 ↗
38. Self-healing cementitious materials by the combination of microfibres and superabsorbent polymers
39. Wang J. Self-healing concrete by means of immobilized carbonate precipitating bacteria. PhD thesis, Ghent: Ghent Universtity; 2013.
40. Nondestructive high-resolution visualization and measurement of anisotropic effective porosity in complex lithologies using high-resolution X-ray computed tomography10.1016/j.jhydrol.2004.06.037 ↗
41. Cleaning of concrete fouled by lichens with the aid of Thiobacilli10.1617/14254 ↗