Improvement of the interlayer bonding strength in a 3D-printed mortar with biocement sprayed into interlayer surfaces
This paper proposes a method to improve the interlayer bonding strength in 3D-printed mortars by spraying bacteria and cement solutions (biocement) into the interlayer surfaces. The effectiveness of this approach is assessed using splitting strength tests. SEM and X-ray mapping of calcium carbonate...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-12-01
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| Series: | Virtual and Physical Prototyping |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/17452759.2025.2521104 |
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| _version_ | 1849425659836760064 |
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| author | Yifang Cao Luming Shen Abhijit Mukherjee Ali Abbas Daniel Dias-da-Costa |
| author_facet | Yifang Cao Luming Shen Abhijit Mukherjee Ali Abbas Daniel Dias-da-Costa |
| author_sort | Yifang Cao |
| collection | DOAJ |
| description | This paper proposes a method to improve the interlayer bonding strength in 3D-printed mortars by spraying bacteria and cement solutions (biocement) into the interlayer surfaces. The effectiveness of this approach is assessed using splitting strength tests. SEM and X-ray mapping of calcium carbonate crystals formed on the interlayers is used to investigate the synergistic effect of biocement in the bonding. A competing mechanism between the increased water content from spraying the biocement solution (which reduces strength) and the biocementation (which increases strength) is identified. The interlayer bond strength is shown to increase up to nearly six times for a spray application of bacteria and cementation solution at printing intervals of 120 min. This advanced manufacturing approach has benefits and implications on the load-bearing strength of 3D-printed vertical structures.HighlightsThis paper proposes a bacteria spraying technique to improve 3D-printed mortar performance.Biocementation of sprayed bacteria and cementation solutions enhances interlayer strength.A competing mechanism between higher water content and biocementation is identified.Biocementation can potentially increase interlayer strength by nearly six times.Benefits and implications for 3D printed vertical infrastructure in digital construction sector. |
| format | Article |
| id | doaj-art-1e6c477cf99f4e32976bdc030471f91d |
| institution | Kabale University |
| issn | 1745-2759 1745-2767 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj-art-1e6c477cf99f4e32976bdc030471f91d2025-08-20T03:29:40ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672025-12-0120110.1080/17452759.2025.2521104Improvement of the interlayer bonding strength in a 3D-printed mortar with biocement sprayed into interlayer surfacesYifang Cao0Luming Shen1Abhijit Mukherjee2Ali Abbas3Daniel Dias-da-Costa4School of Civil Engineering, Faculty of Engineering, The University of Sydney, Sydney, AustraliaSchool of Civil Engineering, Faculty of Engineering, The University of Sydney, Sydney, AustraliaSchool of Civil and Mechanical Engineering, Curtin University, Perth, AustraliaSchool of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, AustraliaSchool of Civil Engineering, Faculty of Engineering, The University of Sydney, Sydney, AustraliaThis paper proposes a method to improve the interlayer bonding strength in 3D-printed mortars by spraying bacteria and cement solutions (biocement) into the interlayer surfaces. The effectiveness of this approach is assessed using splitting strength tests. SEM and X-ray mapping of calcium carbonate crystals formed on the interlayers is used to investigate the synergistic effect of biocement in the bonding. A competing mechanism between the increased water content from spraying the biocement solution (which reduces strength) and the biocementation (which increases strength) is identified. The interlayer bond strength is shown to increase up to nearly six times for a spray application of bacteria and cementation solution at printing intervals of 120 min. This advanced manufacturing approach has benefits and implications on the load-bearing strength of 3D-printed vertical structures.HighlightsThis paper proposes a bacteria spraying technique to improve 3D-printed mortar performance.Biocementation of sprayed bacteria and cementation solutions enhances interlayer strength.A competing mechanism between higher water content and biocementation is identified.Biocementation can potentially increase interlayer strength by nearly six times.Benefits and implications for 3D printed vertical infrastructure in digital construction sector.https://www.tandfonline.com/doi/10.1080/17452759.2025.25211043D Printingcementinterlayerhealingbacteriabiocementation |
| spellingShingle | Yifang Cao Luming Shen Abhijit Mukherjee Ali Abbas Daniel Dias-da-Costa Improvement of the interlayer bonding strength in a 3D-printed mortar with biocement sprayed into interlayer surfaces Virtual and Physical Prototyping 3D Printing cement interlayer healing bacteria biocementation |
| title | Improvement of the interlayer bonding strength in a 3D-printed mortar with biocement sprayed into interlayer surfaces |
| title_full | Improvement of the interlayer bonding strength in a 3D-printed mortar with biocement sprayed into interlayer surfaces |
| title_fullStr | Improvement of the interlayer bonding strength in a 3D-printed mortar with biocement sprayed into interlayer surfaces |
| title_full_unstemmed | Improvement of the interlayer bonding strength in a 3D-printed mortar with biocement sprayed into interlayer surfaces |
| title_short | Improvement of the interlayer bonding strength in a 3D-printed mortar with biocement sprayed into interlayer surfaces |
| title_sort | improvement of the interlayer bonding strength in a 3d printed mortar with biocement sprayed into interlayer surfaces |
| topic | 3D Printing cement interlayer healing bacteria biocementation |
| url | https://www.tandfonline.com/doi/10.1080/17452759.2025.2521104 |
| work_keys_str_mv | AT yifangcao improvementoftheinterlayerbondingstrengthina3dprintedmortarwithbiocementsprayedintointerlayersurfaces AT lumingshen improvementoftheinterlayerbondingstrengthina3dprintedmortarwithbiocementsprayedintointerlayersurfaces AT abhijitmukherjee improvementoftheinterlayerbondingstrengthina3dprintedmortarwithbiocementsprayedintointerlayersurfaces AT aliabbas improvementoftheinterlayerbondingstrengthina3dprintedmortarwithbiocementsprayedintointerlayersurfaces AT danieldiasdacosta improvementoftheinterlayerbondingstrengthina3dprintedmortarwithbiocementsprayedintointerlayersurfaces |