RTU Research Information System
Publikācija: Preliminary Research for Long Lasting Self-Healing Effect of Bacteria-Based Concrete with Lightweight Aggregates
| Publication Type | Full-text conference paper published in conference proceedings indexed in SCOPUS or WOS database |
|---|---|
| Funding for basic activity | EU Structural Funds |
| Defending: | , |
| Publication language | English (en) |
| Title in original language | Preliminary Research for Long Lasting Self-Healing Effect of Bacteria-Based Concrete with Lightweight Aggregates |
| Field of research | 2. Engineering and technology |
| Sub-field of research | 2.1. Construction and transportation engineering |
| Research platform | None |
| Authors |
Laura Dembovska
Diāna Bajāre Aleksandrs Korjakins Daira Toma E. Jakuboviča |
| Keywords | concrete |
| Abstract | A typical phenomenon in concrete structures is crack formation. Shrinkage cracks may appear in early stage of concrete. In late age cracks may appear due to process of serviceability and external weather conditions. Larger cracks interfere structural integrity, microcracks may result in durability problems as increase of water absorption, which results in concrete degradation and reinforcement corrosion. Manual maintenance of the concrete structure is costly and labour consuming; therefore, functionality of self-healing phenomenon of concrete structures has been inspected. In this study self-healing phenomenon of bacteria-based concrete has been investigated. Calcium lactate and yeast medium with spore-forming alkaliphilic bacteria Bacillus Lentus have been chosen. Bacillus Lentus spores with medium were integrated (by using vacuum technique) into expanded clay granules (LECA) with a size of 2-4 mm. Direct addition of bacteria (without immobilization) in concrete limits the survival of bacteria from 1 to 2 months. In this study, to increase viability of bacteria at high pH media in concrete and thus the time-related functionality of self-healing agents, bacteria were immobilized in LECA. |
| DOI: | 10.1088/1757-899X/660/1/012034 |
| Hyperlink: | https://iopscience.iop.org/article/10.1088/1757-899X/660/1/012034/pdf  |
| Reference | Dembovska, L., Bajāre, D., Korjakins, A., Toma, D., Jakuboviča, E. Preliminary Research for Long Lasting Self-Healing Effect of Bacteria-Based Concrete with Lightweight Aggregates. In: IOP Conference Series: Materials Science and Engineering. Vol.660: 4th International Conference on Innovative Materials, Structures and Technologies (IMST 2019), Latvia, Riga, 25-27 September, 2019. Bristol: IOP Publishing Ltd, 2019, Article number 012034. ISSN 1757-8981. e-ISSN 1757-899X. Available from: doi:10.1088/1757-899X/660/1/012034 |
| Additional information |
Citation count:
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| ID | 30226 |
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