Reinforcing pore structure and ITZ of foam concrete enabled by DNA self-assembled CNTs networks
In this study, CNTs networks were formed on the foam and quartz sand based on the self-assembly of deoxyribonucleic acid (DNA), which propose two organic-inorganic hybrid materials (CNTs-sand and CNTs-foam) for reinforcing foam concrete. DNA can not only disperse CNTs by π-π stacking but also form i...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525005467 |
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| author | Tianye Luo Xingu Zhong Yi Zhou Xinke Zhang Qianxi Li Chao Zhao Xiong Peng Hongxin Sun |
| author_facet | Tianye Luo Xingu Zhong Yi Zhou Xinke Zhang Qianxi Li Chao Zhao Xiong Peng Hongxin Sun |
| author_sort | Tianye Luo |
| collection | DOAJ |
| description | In this study, CNTs networks were formed on the foam and quartz sand based on the self-assembly of deoxyribonucleic acid (DNA), which propose two organic-inorganic hybrid materials (CNTs-sand and CNTs-foam) for reinforcing foam concrete. DNA can not only disperse CNTs by π-π stacking but also form ionic-hydrogen bond with KOH modified quartz sand. On the other hand, a three-phase foam stabilized by DNA/CNTs was prepared. The test results of mechanical properties indicated that the compressive, splitting tensile and bending strength are impressively increased by 2 times, 3 times and 2 times compared to control group. CNTs-foam and CNTs-sand did not promote the hydration reaction, according to XRD and TG test results. The enhancement of mechanical properties is predominantly driven by the optimization of pore structure and interfacial transition zone (ITZ), as evidenced by SEM, X-CT and nanoindentation. This paper provides an innovative strategy for CNTs dispersion in foam concrete and contributes to designing high-performance foam concrete. |
| format | Article |
| id | doaj-art-64ba269a887940d8b7a0352a475dfcff |
| institution | DOAJ |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-64ba269a887940d8b7a0352a475dfcff2025-08-20T03:09:12ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e0474810.1016/j.cscm.2025.e04748Reinforcing pore structure and ITZ of foam concrete enabled by DNA self-assembled CNTs networksTianye Luo0Xingu Zhong1Yi Zhou2Xinke Zhang3Qianxi Li4Chao Zhao5Xiong Peng6Hongxin Sun7Department of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR ChinaDepartment of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR China; Corresponding authors.Department of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR China; Corresponding authors.Department of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR ChinaDepartment of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR ChinaDepartment of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR ChinaDepartment of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR ChinaHunan Provincial Key Laboratory of Structures for Wind Resistance and Vibration Control & School of Civil Engineering, PR ChinaIn this study, CNTs networks were formed on the foam and quartz sand based on the self-assembly of deoxyribonucleic acid (DNA), which propose two organic-inorganic hybrid materials (CNTs-sand and CNTs-foam) for reinforcing foam concrete. DNA can not only disperse CNTs by π-π stacking but also form ionic-hydrogen bond with KOH modified quartz sand. On the other hand, a three-phase foam stabilized by DNA/CNTs was prepared. The test results of mechanical properties indicated that the compressive, splitting tensile and bending strength are impressively increased by 2 times, 3 times and 2 times compared to control group. CNTs-foam and CNTs-sand did not promote the hydration reaction, according to XRD and TG test results. The enhancement of mechanical properties is predominantly driven by the optimization of pore structure and interfacial transition zone (ITZ), as evidenced by SEM, X-CT and nanoindentation. This paper provides an innovative strategy for CNTs dispersion in foam concrete and contributes to designing high-performance foam concrete.http://www.sciencedirect.com/science/article/pii/S2214509525005467Foam concreteDeoxyribonucleic acid (DNA)/carbon nanotubes (CNTs)CNTs-sandCNTs-foamInterfacial transition zone (ITZ) |
| spellingShingle | Tianye Luo Xingu Zhong Yi Zhou Xinke Zhang Qianxi Li Chao Zhao Xiong Peng Hongxin Sun Reinforcing pore structure and ITZ of foam concrete enabled by DNA self-assembled CNTs networks Case Studies in Construction Materials Foam concrete Deoxyribonucleic acid (DNA)/carbon nanotubes (CNTs) CNTs-sand CNTs-foam Interfacial transition zone (ITZ) |
| title | Reinforcing pore structure and ITZ of foam concrete enabled by DNA self-assembled CNTs networks |
| title_full | Reinforcing pore structure and ITZ of foam concrete enabled by DNA self-assembled CNTs networks |
| title_fullStr | Reinforcing pore structure and ITZ of foam concrete enabled by DNA self-assembled CNTs networks |
| title_full_unstemmed | Reinforcing pore structure and ITZ of foam concrete enabled by DNA self-assembled CNTs networks |
| title_short | Reinforcing pore structure and ITZ of foam concrete enabled by DNA self-assembled CNTs networks |
| title_sort | reinforcing pore structure and itz of foam concrete enabled by dna self assembled cnts networks |
| topic | Foam concrete Deoxyribonucleic acid (DNA)/carbon nanotubes (CNTs) CNTs-sand CNTs-foam Interfacial transition zone (ITZ) |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525005467 |
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