High-performance cementitious composites containing nanostructured carbon additives made from charred coal fines
Abstract Carbon-based nanomaterials, such as carbon nanoplatelets, graphene oxide, and carbon quantum dots, have many possible end-use applications due to their ability to impart unique mechanical, electrical, thermal, and optical properties to cement composites. Despite this potential, these materi...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-59046-y |
| _version_ | 1797199484444213248 |
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| author | Yuan Gao Viet Hung Pham Jennifer Weidman Ki-Joong Kim Richard E. Spaulding Congjun Wang Christopher S. Matranga |
| author_facet | Yuan Gao Viet Hung Pham Jennifer Weidman Ki-Joong Kim Richard E. Spaulding Congjun Wang Christopher S. Matranga |
| author_sort | Yuan Gao |
| collection | DOAJ |
| description | Abstract Carbon-based nanomaterials, such as carbon nanoplatelets, graphene oxide, and carbon quantum dots, have many possible end-use applications due to their ability to impart unique mechanical, electrical, thermal, and optical properties to cement composites. Despite this potential, these materials are rarely used in the construction industry due to high material costs and limited data on performance and durability. In this study, domestic coal is used to fabricate low-cost carbon nanomaterials that can be used economically in cement formulations. A range of chemical and physical processing approaches are employed to control the size, morphology, and chemical functionalization of the carbon nanomaterial, which improves its miscibility with cement formulations and its impact on mechanical properties and durability. At loadings of 0.01 to 0.07 wt.% of coal-derived carbon nanomaterial, the compressive and flexural strength of cement samples are enhanced by 24% and 23%, respectively, in comparison to neat cement. At loadings of 0.02 to 0.06 wt.%, the compressive and flexural strength of concrete composites increases by 28% and 21%, respectively, in comparison to neat samples. Additionally, the carbon nanomaterial additives studied in this work reduce cement porosity by 36%, permeability by 86%, and chloride penetration depth by 60%. These results illustrate that low-loadings of coal-derived carbon nanomaterial additives can improve the mechanical properties, durability, and corrosion resistance of cement composites. |
| first_indexed | 2024-04-24T07:16:29Z |
| format | Article |
| id | doaj.art-96aa3b098edb43a3b4ed8eb12da71a4d |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-24T07:16:29Z |
| publishDate | 2024-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-96aa3b098edb43a3b4ed8eb12da71a4d2024-04-21T11:16:01ZengNature PortfolioScientific Reports2045-23222024-04-0114111810.1038/s41598-024-59046-yHigh-performance cementitious composites containing nanostructured carbon additives made from charred coal finesYuan Gao0Viet Hung Pham1Jennifer Weidman2Ki-Joong Kim3Richard E. Spaulding4Congjun Wang5Christopher S. Matranga6National Energy Technology LaboratoryNational Energy Technology LaboratoryNational Energy Technology LaboratoryNational Energy Technology LaboratoryNational Energy Technology LaboratoryNational Energy Technology LaboratoryNational Energy Technology LaboratoryAbstract Carbon-based nanomaterials, such as carbon nanoplatelets, graphene oxide, and carbon quantum dots, have many possible end-use applications due to their ability to impart unique mechanical, electrical, thermal, and optical properties to cement composites. Despite this potential, these materials are rarely used in the construction industry due to high material costs and limited data on performance and durability. In this study, domestic coal is used to fabricate low-cost carbon nanomaterials that can be used economically in cement formulations. A range of chemical and physical processing approaches are employed to control the size, morphology, and chemical functionalization of the carbon nanomaterial, which improves its miscibility with cement formulations and its impact on mechanical properties and durability. At loadings of 0.01 to 0.07 wt.% of coal-derived carbon nanomaterial, the compressive and flexural strength of cement samples are enhanced by 24% and 23%, respectively, in comparison to neat cement. At loadings of 0.02 to 0.06 wt.%, the compressive and flexural strength of concrete composites increases by 28% and 21%, respectively, in comparison to neat samples. Additionally, the carbon nanomaterial additives studied in this work reduce cement porosity by 36%, permeability by 86%, and chloride penetration depth by 60%. These results illustrate that low-loadings of coal-derived carbon nanomaterial additives can improve the mechanical properties, durability, and corrosion resistance of cement composites.https://doi.org/10.1038/s41598-024-59046-y |
| spellingShingle | Yuan Gao Viet Hung Pham Jennifer Weidman Ki-Joong Kim Richard E. Spaulding Congjun Wang Christopher S. Matranga High-performance cementitious composites containing nanostructured carbon additives made from charred coal fines Scientific Reports |
| title | High-performance cementitious composites containing nanostructured carbon additives made from charred coal fines |
| title_full | High-performance cementitious composites containing nanostructured carbon additives made from charred coal fines |
| title_fullStr | High-performance cementitious composites containing nanostructured carbon additives made from charred coal fines |
| title_full_unstemmed | High-performance cementitious composites containing nanostructured carbon additives made from charred coal fines |
| title_short | High-performance cementitious composites containing nanostructured carbon additives made from charred coal fines |
| title_sort | high performance cementitious composites containing nanostructured carbon additives made from charred coal fines |
| url | https://doi.org/10.1038/s41598-024-59046-y |
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