A Experimental Study on Engineered Cementitious Composites (ECC) Incorporated with <i>Sporosarcina pasteurii</i>
Microbial-induced calcium carbonate precipitation (MICP) has been successfully applied to self-healing concrete with improved mechanical properties, while the performance of engineered cementitious composites (ECC) incorporated with bacteria is still lacking. In this study, <i>Sporosarcina pas...
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MDPI AG
2022-05-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/5/691 |
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| author | Bingcheng Chen Lufei Du Jun Yuan Xichen Sun Madura Pathirage Weiwei Sun Jun Feng |
| author_facet | Bingcheng Chen Lufei Du Jun Yuan Xichen Sun Madura Pathirage Weiwei Sun Jun Feng |
| author_sort | Bingcheng Chen |
| collection | DOAJ |
| description | Microbial-induced calcium carbonate precipitation (MICP) has been successfully applied to self-healing concrete with improved mechanical properties, while the performance of engineered cementitious composites (ECC) incorporated with bacteria is still lacking. In this study, <i>Sporosarcina pasteurii</i>, which has a strong ability to produce calcium carbonate, was introduced into engineered cementitious composites (ECC) with mechanical properties analyzed in detail. A multiscale study including compression, tension and fiber pullout tests was carried out to explore the <i>Sporosarcina pasteurii</i> incorporation effect on ECC mechanical properties. Compared with the control group, the compressive strength of S.p.-ECC specimens cured for 7 days was increased by almost 10% and the regained strength after self-healing was increased by 7.31%. Meanwhile, the initial crack strength and tensile strength of S.p.-ECC increased by 10.25% and 12.68%, respectively. Interestingly, the crack pattern of ECC was also improved to some extent, e.g., bacteria seemed to minimize crack width. The addition of bacteria failed to increase the ECC tensile strain, which remained at about 4%, in accordance with engineering practice. Finally, matrix/fiber interface properties were altered in S.p.-ECC with lower chemical bond and higher frictional bond strength. The results at the microscopic scale explain well the property improvements of ECC composites based on the fine-scale mechanical theory. |
| first_indexed | 2024-03-10T03:12:56Z |
| format | Article |
| id | doaj.art-bfb90a14cd1c4bffa3701491ffb6a1f8 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T03:12:56Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-bfb90a14cd1c4bffa3701491ffb6a1f82023-11-23T10:21:42ZengMDPI AGBuildings2075-53092022-05-0112569110.3390/buildings12050691A Experimental Study on Engineered Cementitious Composites (ECC) Incorporated with <i>Sporosarcina pasteurii</i>Bingcheng Chen0Lufei Du1Jun Yuan2Xichen Sun3Madura Pathirage4Weiwei Sun5Jun Feng6Department of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaDepartment of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaCollege of Civil Engineering, Nanjing Forestry University, Nanjing 210037, ChinaNational Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, ChinaDepartment of Civil and Environmental Engineering, Northwestern University, Evanston, IL 60208, USADepartment of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaNational Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, ChinaMicrobial-induced calcium carbonate precipitation (MICP) has been successfully applied to self-healing concrete with improved mechanical properties, while the performance of engineered cementitious composites (ECC) incorporated with bacteria is still lacking. In this study, <i>Sporosarcina pasteurii</i>, which has a strong ability to produce calcium carbonate, was introduced into engineered cementitious composites (ECC) with mechanical properties analyzed in detail. A multiscale study including compression, tension and fiber pullout tests was carried out to explore the <i>Sporosarcina pasteurii</i> incorporation effect on ECC mechanical properties. Compared with the control group, the compressive strength of S.p.-ECC specimens cured for 7 days was increased by almost 10% and the regained strength after self-healing was increased by 7.31%. Meanwhile, the initial crack strength and tensile strength of S.p.-ECC increased by 10.25% and 12.68%, respectively. Interestingly, the crack pattern of ECC was also improved to some extent, e.g., bacteria seemed to minimize crack width. The addition of bacteria failed to increase the ECC tensile strain, which remained at about 4%, in accordance with engineering practice. Finally, matrix/fiber interface properties were altered in S.p.-ECC with lower chemical bond and higher frictional bond strength. The results at the microscopic scale explain well the property improvements of ECC composites based on the fine-scale mechanical theory.https://www.mdpi.com/2075-5309/12/5/691microbial-induced calcium carbonate precipitation (MICP)engineered cementitious composites (ECC)<i>Sporosarcina pasteurii</i>strength regaininterface alteration |
| spellingShingle | Bingcheng Chen Lufei Du Jun Yuan Xichen Sun Madura Pathirage Weiwei Sun Jun Feng A Experimental Study on Engineered Cementitious Composites (ECC) Incorporated with <i>Sporosarcina pasteurii</i> Buildings microbial-induced calcium carbonate precipitation (MICP) engineered cementitious composites (ECC) <i>Sporosarcina pasteurii</i> strength regain interface alteration |
| title | A Experimental Study on Engineered Cementitious Composites (ECC) Incorporated with <i>Sporosarcina pasteurii</i> |
| title_full | A Experimental Study on Engineered Cementitious Composites (ECC) Incorporated with <i>Sporosarcina pasteurii</i> |
| title_fullStr | A Experimental Study on Engineered Cementitious Composites (ECC) Incorporated with <i>Sporosarcina pasteurii</i> |
| title_full_unstemmed | A Experimental Study on Engineered Cementitious Composites (ECC) Incorporated with <i>Sporosarcina pasteurii</i> |
| title_short | A Experimental Study on Engineered Cementitious Composites (ECC) Incorporated with <i>Sporosarcina pasteurii</i> |
| title_sort | experimental study on engineered cementitious composites ecc incorporated with i sporosarcina pasteurii i |
| topic | microbial-induced calcium carbonate precipitation (MICP) engineered cementitious composites (ECC) <i>Sporosarcina pasteurii</i> strength regain interface alteration |
| url | https://www.mdpi.com/2075-5309/12/5/691 |
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