Improving mechanical performance and reducing CO2 emissions of cement-based composites via one-step synthesis of highly dispersed flake g-C3N4
Graphitic carbon nitride (g-C3N4) has demonstrated significant potential in enhancing the mechanical properties of cement-based materials. However, the poor dispersibility and complex preparation of bulk g-C3N4 (B-CN), along with the lack of research on its environmental impact, remain major obstacl...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-12-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525007697 |
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| author | Jiaqian Pang Yangrui Wang Lingjie Jiang Haijie He Bin Wang Yufei Gao |
| author_facet | Jiaqian Pang Yangrui Wang Lingjie Jiang Haijie He Bin Wang Yufei Gao |
| author_sort | Jiaqian Pang |
| collection | DOAJ |
| description | Graphitic carbon nitride (g-C3N4) has demonstrated significant potential in enhancing the mechanical properties of cement-based materials. However, the poor dispersibility and complex preparation of bulk g-C3N4 (B-CN), along with the lack of research on its environmental impact, remain major obstacles to its widespread application. To address this issue, this study employs a one-step method to synthesize highly dispersed flake g-C3N4 (F-CN) for improving the mechanical properties and reducing the CO2 emissions of cement-based composites, and investigates the underlying mechanisms. In addition, the CO2 emissions of F-CN-modified cement are evaluated. Specifically, F-CN exhibits significantly higher dispersibility and a smaller particle size (20–80 nm), allowing it to be directly applied to cement-based systems without the need for additional dispersing agents. The highly dispersible F-CN is more favorable for accelerating cement hydration and refining the microstructure. Compared with the control and B-CN groups, F-CN increases the 28-day compressive strength of cement paste specimens by 8.65 % and 16.90 %, respectively. Moreover, compared with conventional cement and B-CN-modified cement, F-CN-modified cement reduces CO2 emissions during production by 14.37 % and 6.37 %, respectively. This study proposes a simple and effective approach for improving both the performance and environmental profile of cement-based composites using highly dispersed flake g-C3N4, offering new insights into nanomaterial–cement interactions and contributing to low-carbon construction solutions. |
| format | Article |
| id | doaj-art-d14c1ac7e7ae485e95b36a1e25db0852 |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-d14c1ac7e7ae485e95b36a1e25db08522025-08-20T03:26:31ZengElsevierCase Studies in Construction Materials2214-50952025-12-0123e0497110.1016/j.cscm.2025.e04971Improving mechanical performance and reducing CO2 emissions of cement-based composites via one-step synthesis of highly dispersed flake g-C3N4Jiaqian Pang0Yangrui Wang1Lingjie Jiang2Haijie He3Bin Wang4Yufei Gao5Taizhou Central Hospital (Taizhou University Hospital), Taizhou, Zhejiang, PR ChinaSchool of Civil Engineering and Architecture, Taizhou University, Taizhou, Zhejiang, PR ChinaSchool of Civil Engineering and Architecture, Taizhou University, Taizhou, Zhejiang, PR ChinaSchool of Civil Engineering and Architecture, Taizhou University, Taizhou, Zhejiang, PR ChinaSchool of Civil Engineering and Architecture, Taizhou University, Taizhou, Zhejiang, PR China; Corresponding author.School of Civil Engineering and Architecture, Taizhou University, Taizhou, Zhejiang, PR China; School of Civil Engineering, Shenyang Jianzhu University, Shenyang, Liaoning, PR China; Corresponding author at: School of Civil Engineering and Architecture, Taizhou University, Taizhou, Zhejiang, PR China.Graphitic carbon nitride (g-C3N4) has demonstrated significant potential in enhancing the mechanical properties of cement-based materials. However, the poor dispersibility and complex preparation of bulk g-C3N4 (B-CN), along with the lack of research on its environmental impact, remain major obstacles to its widespread application. To address this issue, this study employs a one-step method to synthesize highly dispersed flake g-C3N4 (F-CN) for improving the mechanical properties and reducing the CO2 emissions of cement-based composites, and investigates the underlying mechanisms. In addition, the CO2 emissions of F-CN-modified cement are evaluated. Specifically, F-CN exhibits significantly higher dispersibility and a smaller particle size (20–80 nm), allowing it to be directly applied to cement-based systems without the need for additional dispersing agents. The highly dispersible F-CN is more favorable for accelerating cement hydration and refining the microstructure. Compared with the control and B-CN groups, F-CN increases the 28-day compressive strength of cement paste specimens by 8.65 % and 16.90 %, respectively. Moreover, compared with conventional cement and B-CN-modified cement, F-CN-modified cement reduces CO2 emissions during production by 14.37 % and 6.37 %, respectively. This study proposes a simple and effective approach for improving both the performance and environmental profile of cement-based composites using highly dispersed flake g-C3N4, offering new insights into nanomaterial–cement interactions and contributing to low-carbon construction solutions.http://www.sciencedirect.com/science/article/pii/S2214509525007697Graphitic carbon nitride (g-C3N4)DispersityCement compositesMechanical performanceMechanismCarbon emission |
| spellingShingle | Jiaqian Pang Yangrui Wang Lingjie Jiang Haijie He Bin Wang Yufei Gao Improving mechanical performance and reducing CO2 emissions of cement-based composites via one-step synthesis of highly dispersed flake g-C3N4 Case Studies in Construction Materials Graphitic carbon nitride (g-C3N4) Dispersity Cement composites Mechanical performance Mechanism Carbon emission |
| title | Improving mechanical performance and reducing CO2 emissions of cement-based composites via one-step synthesis of highly dispersed flake g-C3N4 |
| title_full | Improving mechanical performance and reducing CO2 emissions of cement-based composites via one-step synthesis of highly dispersed flake g-C3N4 |
| title_fullStr | Improving mechanical performance and reducing CO2 emissions of cement-based composites via one-step synthesis of highly dispersed flake g-C3N4 |
| title_full_unstemmed | Improving mechanical performance and reducing CO2 emissions of cement-based composites via one-step synthesis of highly dispersed flake g-C3N4 |
| title_short | Improving mechanical performance and reducing CO2 emissions of cement-based composites via one-step synthesis of highly dispersed flake g-C3N4 |
| title_sort | improving mechanical performance and reducing co2 emissions of cement based composites via one step synthesis of highly dispersed flake g c3n4 |
| topic | Graphitic carbon nitride (g-C3N4) Dispersity Cement composites Mechanical performance Mechanism Carbon emission |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525007697 |
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