THE ROLE OF GRAPHENE OXIDE ON THE HYDRATION PROCESS AND CHEMICAL SHRINKAGE OF CEMENT COMPOSITES
Graphene oxide (GO) has attracted increasing attention for its application in cementitious materials as it can be used to regulate the hydration products of cement and improve the properties of cement composites. This paper investigated the role of GO on the hydration process and chemical shrinkage...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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University of Chemistry and Technology, Prague
2020-07-01
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| Series: | Ceramics-Silikáty |
| Subjects: | |
| Online Access: |
http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1329
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| _version_ | 1818404710099451904 |
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| author | Yidong Xu Bo Li Zeng Juqing Jin Ruoyu Chen Wei Zhu Dayong |
| author_facet | Yidong Xu Bo Li Zeng Juqing Jin Ruoyu Chen Wei Zhu Dayong |
| author_sort | Yidong Xu |
| collection | DOAJ |
| description | Graphene oxide (GO) has attracted increasing attention for its application in cementitious materials as it can be used to regulate the hydration products of cement and improve the properties of cement composites. This paper investigated the role of GO on the hydration process and chemical shrinkage of a cement paste through an experimental study and molecular dynamics simulation. The hydration heat flow of a cement composite with GO (CCG) was characterised by using an isothermal calorimeter. The chemical shrinkage of the CCG was also measured by applying a modified method based on ASTM C1608. The test results have shown that incorporating GO can mainly accelerate the hydration rate of cement composites at the early stage, but would not change the four-stage process of the cement hydration. The addition of GO by 0.3 wt% of cement is able to reduce the chemical shrinkage of the cement composites. This regulation effect is mainly attributed to the hydrogen bonding, which has been verified by the molecular dynamics simulation. |
| first_indexed | 2024-12-14T08:44:28Z |
| format | Article |
| id | doaj.art-fac84efec1dd426fb69109c53c3ba384 |
| institution | Directory Open Access Journal |
| issn | 0862-5468 1804-5847 |
| language | English |
| last_indexed | 2024-12-14T08:44:28Z |
| publishDate | 2020-07-01 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | Article |
| series | Ceramics-Silikáty |
| spelling | doaj.art-fac84efec1dd426fb69109c53c3ba3842022-12-21T23:09:14ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472020-07-0164331031910.13168/cs.2020.002010.13168/cs.2020.0020.20200817064204THE ROLE OF GRAPHENE OXIDE ON THE HYDRATION PROCESS AND CHEMICAL SHRINKAGE OF CEMENT COMPOSITESYidong Xu0Bo LiZeng Juqing1Jin RuoyuChen Wei2Zhu Dayong Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China Graphene oxide (GO) has attracted increasing attention for its application in cementitious materials as it can be used to regulate the hydration products of cement and improve the properties of cement composites. This paper investigated the role of GO on the hydration process and chemical shrinkage of a cement paste through an experimental study and molecular dynamics simulation. The hydration heat flow of a cement composite with GO (CCG) was characterised by using an isothermal calorimeter. The chemical shrinkage of the CCG was also measured by applying a modified method based on ASTM C1608. The test results have shown that incorporating GO can mainly accelerate the hydration rate of cement composites at the early stage, but would not change the four-stage process of the cement hydration. The addition of GO by 0.3 wt% of cement is able to reduce the chemical shrinkage of the cement composites. This regulation effect is mainly attributed to the hydrogen bonding, which has been verified by the molecular dynamics simulation. http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1329 graphene oxide cement paste hydration heat chemical shrinkage molecular dynamics simulation |
| spellingShingle | Yidong Xu Bo Li Zeng Juqing Jin Ruoyu Chen Wei Zhu Dayong THE ROLE OF GRAPHENE OXIDE ON THE HYDRATION PROCESS AND CHEMICAL SHRINKAGE OF CEMENT COMPOSITES Ceramics-Silikáty graphene oxide cement paste hydration heat chemical shrinkage molecular dynamics simulation |
| title | THE ROLE OF GRAPHENE OXIDE ON THE HYDRATION PROCESS AND CHEMICAL SHRINKAGE OF CEMENT COMPOSITES |
| title_full | THE ROLE OF GRAPHENE OXIDE ON THE HYDRATION PROCESS AND CHEMICAL SHRINKAGE OF CEMENT COMPOSITES |
| title_fullStr | THE ROLE OF GRAPHENE OXIDE ON THE HYDRATION PROCESS AND CHEMICAL SHRINKAGE OF CEMENT COMPOSITES |
| title_full_unstemmed | THE ROLE OF GRAPHENE OXIDE ON THE HYDRATION PROCESS AND CHEMICAL SHRINKAGE OF CEMENT COMPOSITES |
| title_short | THE ROLE OF GRAPHENE OXIDE ON THE HYDRATION PROCESS AND CHEMICAL SHRINKAGE OF CEMENT COMPOSITES |
| title_sort | role of graphene oxide on the hydration process and chemical shrinkage of cement composites |
| topic | graphene oxide cement paste hydration heat chemical shrinkage molecular dynamics simulation |
| url |
http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1329
|
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