A Sustainable Graphene Based Cement Composite
The rheological properties of fresh cement paste with different content of graphene nanoplatelets (GNPs), different shear rate cycles and resting time was investigated. The rheological data were fitted by the Bingham model, Modified Bingham model, Herschel-Bulkley model and Casson model to estimate...
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| Language: | en |
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MDPI
2017
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| Online Access: | http://eprints.um.edu.my/19042/1/A_Sustainable_Graphene_Based_Cement_Composite.pdf http://eprints.um.edu.my/19042/ http://dx.doi.org/10.3390/su9071229 |
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| author | Rehman, S.K.U. Ibrahim, Z. Memon, S.A. Javed, M.F. Khushnood, R.A. |
| author_facet | Rehman, S.K.U. Ibrahim, Z. Memon, S.A. Javed, M.F. Khushnood, R.A. |
| author_sort | Rehman, S.K.U. |
| building | UM Library |
| collection | Institutional Repository |
| content_provider | Universiti Malaya |
| content_source | UM Research Repository |
| continent | Asia |
| country | Malaysia |
| description | The rheological properties of fresh cement paste with different content of graphene nanoplatelets (GNPs), different shear rate cycles and resting time was investigated. The rheological data were fitted by the Bingham model, Modified Bingham model, Herschel-Bulkley model and Casson model to estimate the yield stress and plastic viscosity, and to see trend of the flow curves. The effectiveness of these rheological models was expressed by the standard error. Test results showed that yield stress and plastic viscosity increased with the increase in the content of graphene in the cement based composite and resting time while the values of these parameters decreased for higher shear rate cycle. In comparison to control sample, the GNP cement based composite showed 30% increase in load carrying capacity and 73% increase in overall failure strain. Piezo-resistive characteristics of GNP were employed to evaluate the self-sensing composite material. It was found that, at maximum compressive load, the electrical resistivity value reduced by 42% and hence GNP cement based composite can be used to detect the damages in concrete. Finally, the practical application of this composite material was evaluated by testing full length reinforced concrete beam. It was found that graphene-cement composite specimen successfully predicted the response against cracks propagation and hence can be used as self-sensing composite material. |
| format | Article |
| id | my.um.eprints-19042 |
| institution | Universiti Malaya |
| language | en |
| publishDate | 2017 |
| publisher | MDPI |
| record_format | eprints |
| spelling | my.um.eprints-190422018-08-30T07:43:54Z http://eprints.um.edu.my/19042/ A Sustainable Graphene Based Cement Composite Rehman, S.K.U. Ibrahim, Z. Memon, S.A. Javed, M.F. Khushnood, R.A. TA Engineering (General). Civil engineering (General) The rheological properties of fresh cement paste with different content of graphene nanoplatelets (GNPs), different shear rate cycles and resting time was investigated. The rheological data were fitted by the Bingham model, Modified Bingham model, Herschel-Bulkley model and Casson model to estimate the yield stress and plastic viscosity, and to see trend of the flow curves. The effectiveness of these rheological models was expressed by the standard error. Test results showed that yield stress and plastic viscosity increased with the increase in the content of graphene in the cement based composite and resting time while the values of these parameters decreased for higher shear rate cycle. In comparison to control sample, the GNP cement based composite showed 30% increase in load carrying capacity and 73% increase in overall failure strain. Piezo-resistive characteristics of GNP were employed to evaluate the self-sensing composite material. It was found that, at maximum compressive load, the electrical resistivity value reduced by 42% and hence GNP cement based composite can be used to detect the damages in concrete. Finally, the practical application of this composite material was evaluated by testing full length reinforced concrete beam. It was found that graphene-cement composite specimen successfully predicted the response against cracks propagation and hence can be used as self-sensing composite material. MDPI 2017 Article PeerReviewed application/pdf en http://eprints.um.edu.my/19042/1/A_Sustainable_Graphene_Based_Cement_Composite.pdf Rehman, S.K.U. and Ibrahim, Z. and Memon, S.A. and Javed, M.F. and Khushnood, R.A. (2017) A Sustainable Graphene Based Cement Composite. Sustainability, 9 (7). p. 1229. ISSN 2071-1050, DOI https://doi.org/10.3390/su9071229 <https://doi.org/10.3390/su9071229>. http://dx.doi.org/10.3390/su9071229 doi:10.3390/su9071229 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Rehman, S.K.U. Ibrahim, Z. Memon, S.A. Javed, M.F. Khushnood, R.A. A Sustainable Graphene Based Cement Composite |
| title | A Sustainable Graphene Based Cement Composite |
| title_full | A Sustainable Graphene Based Cement Composite |
| title_fullStr | A Sustainable Graphene Based Cement Composite |
| title_full_unstemmed | A Sustainable Graphene Based Cement Composite |
| title_short | A Sustainable Graphene Based Cement Composite |
| title_sort | sustainable graphene based cement composite |
| topic | TA Engineering (General). Civil engineering (General) |
| url | http://eprints.um.edu.my/19042/1/A_Sustainable_Graphene_Based_Cement_Composite.pdf http://eprints.um.edu.my/19042/ http://dx.doi.org/10.3390/su9071229 |
| url_provider | http://eprints.um.edu.my/ |