Mechanical and microstructural properties of self-healing concrete based on Hay Bacillus
The experimental investigation delves into assessing the influence of varying ratios of calcite (Cc) and sand on the mechanical and microstructural characteristics of self-healing concrete (SHC). This study employs Hay Bacillus as a catalyst for initiating calcite precipitation within the concrete m...
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| Format: | Article |
| Language: | English |
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Peter the Great St. Petersburg Polytechnic University
2023-10-01
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| Series: | Magazine of Civil Engineering |
| Subjects: | |
| Online Access: | http://engstroy.spbstu.ru/article/2023.122.04/ |
| _version_ | 1797655781383864320 |
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| author | Prasad Venkata Sabri Mohanad Devi Sree Najm Hadee Majeed Samadar Qaidi Shaker |
| author_facet | Prasad Venkata Sabri Mohanad Devi Sree Najm Hadee Majeed Samadar Qaidi Shaker |
| author_sort | Prasad Venkata |
| collection | DOAJ |
| description | The experimental investigation delves into assessing the influence of varying ratios of calcite (Cc) and sand on the mechanical and microstructural characteristics of self-healing concrete (SHC). This study employs Hay Bacillus as a catalyst for initiating calcite precipitation within the concrete matrix. The proportions of calcite under scrutiny encompass 5%, 10%, and 15% of the cement's weight. Additionally, two distinct types of sand, crushed stone sand (CSS) and river sand (RS) are juxtaposed for comparative analysis. The primary focus of this research is on evaluating the compressive and flexural strengths of the SHC, with particular emphasis on the utilization of a 10% bacterial solution. This proportion emerged as the optimal dosage for enhancing concrete strength. To gain a comprehensive understanding of the underlying mechanisms, the microstructure of the concrete is probed through scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques. These tests allow elucidating the impact of varying calcite and sand ratios on the formation of calcium lactate, as well as the production of calcium silicate hydrate (CSH) gel and non-expanding ettringite within the concrete matrix. This investigation contributes valuable insights into the development of self-healing concrete with improved mechanical properties, underpinned by a deeper comprehension of its microstructural transformations. |
| first_indexed | 2024-03-11T17:19:33Z |
| format | Article |
| id | doaj.art-63fc59b637234e18838b9d0d6ee0261c |
| institution | Directory Open Access Journal |
| issn | 2712-8172 |
| language | English |
| last_indexed | 2024-03-11T17:19:33Z |
| publishDate | 2023-10-01 |
| publisher | Peter the Great St. Petersburg Polytechnic University |
| record_format | Article |
| series | Magazine of Civil Engineering |
| spelling | doaj.art-63fc59b637234e18838b9d0d6ee0261c2023-10-19T14:41:07ZengPeter the Great St. Petersburg Polytechnic UniversityMagazine of Civil Engineering2712-81722023-10-011220610.34910/MCE.122.420714726Mechanical and microstructural properties of self-healing concrete based on Hay BacillusPrasad Venkata0Sabri Mohanad1https://orcid.org/0000-0003-3154-8207Devi Sree2Najm Hadee3Majeed Samadar4Qaidi Shaker5Vignana Bharathi Institute of TechnologyPeter the Great St. Petersburg Polytechnic UniversityVignana Bharathi Institute of TechnologyDepartment of Civil Engineering, Zakir Husain Engineering CollegeNawroz UniversityDepartment of Civil Engineering, College of Engineering, University of DuhokThe experimental investigation delves into assessing the influence of varying ratios of calcite (Cc) and sand on the mechanical and microstructural characteristics of self-healing concrete (SHC). This study employs Hay Bacillus as a catalyst for initiating calcite precipitation within the concrete matrix. The proportions of calcite under scrutiny encompass 5%, 10%, and 15% of the cement's weight. Additionally, two distinct types of sand, crushed stone sand (CSS) and river sand (RS) are juxtaposed for comparative analysis. The primary focus of this research is on evaluating the compressive and flexural strengths of the SHC, with particular emphasis on the utilization of a 10% bacterial solution. This proportion emerged as the optimal dosage for enhancing concrete strength. To gain a comprehensive understanding of the underlying mechanisms, the microstructure of the concrete is probed through scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques. These tests allow elucidating the impact of varying calcite and sand ratios on the formation of calcium lactate, as well as the production of calcium silicate hydrate (CSH) gel and non-expanding ettringite within the concrete matrix. This investigation contributes valuable insights into the development of self-healing concrete with improved mechanical properties, underpinned by a deeper comprehension of its microstructural transformations.http://engstroy.spbstu.ru/article/2023.122.04/self-healing concretehydrostructureshay bacilluscrushed stone sandriver sandcalcitemicrostructural |
| spellingShingle | Prasad Venkata Sabri Mohanad Devi Sree Najm Hadee Majeed Samadar Qaidi Shaker Mechanical and microstructural properties of self-healing concrete based on Hay Bacillus Magazine of Civil Engineering self-healing concrete hydrostructures hay bacillus crushed stone sand river sand calcite microstructural |
| title | Mechanical and microstructural properties of self-healing concrete based on Hay Bacillus |
| title_full | Mechanical and microstructural properties of self-healing concrete based on Hay Bacillus |
| title_fullStr | Mechanical and microstructural properties of self-healing concrete based on Hay Bacillus |
| title_full_unstemmed | Mechanical and microstructural properties of self-healing concrete based on Hay Bacillus |
| title_short | Mechanical and microstructural properties of self-healing concrete based on Hay Bacillus |
| title_sort | mechanical and microstructural properties of self healing concrete based on hay bacillus |
| topic | self-healing concrete hydrostructures hay bacillus crushed stone sand river sand calcite microstructural |
| url | http://engstroy.spbstu.ru/article/2023.122.04/ |
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