Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites
The concrete production processes including materials mixing, pumping, transportation, injection, pouring, moulding and compaction, are dependent on the rheological properties. Hence, in this research, the rheological properties of fresh cement paste with different content of graphene (0.03, 0.05 an...
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| Format: | Article |
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SpringerOpen
2018
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| author | Rehman, Sardar Kashif Ur Ibrahim, Zainah Jameel, Mohammad Memon, Shazim Ali Javed, Muhammad Faisal Aslam, Muhammad Mehmood, Kashif Nazar, Sohaib |
| author_facet | Rehman, Sardar Kashif Ur Ibrahim, Zainah Jameel, Mohammad Memon, Shazim Ali Javed, Muhammad Faisal Aslam, Muhammad Mehmood, Kashif Nazar, Sohaib |
| author_sort | Rehman, Sardar Kashif Ur |
| collection | UM |
| description | The concrete production processes including materials mixing, pumping, transportation, injection, pouring, moulding and compaction, are dependent on the rheological properties. Hence, in this research, the rheological properties of fresh cement paste with different content of graphene (0.03, 0.05 and 0.10% by weight of cement) were investigated. The parameters considered were test geometries (concentric cylinders and parallel plates), shear rate range (300–0.6, 200–0.6 and 100–0.6 s −1 ), resting time (0, 30 and 60 min) and superplasticizer dosage (0 and 0.1% by weight of cement). Four rheological prediction models such as Modified Bingham, Herschel–Bulkley, Bingham model and Casson model were chosen for the estimation of the yield stress, plastic viscosity and trend of the flow curves. The effectiveness of these rheological models in predicting the flow properties of cement paste was verified by considering the standard error method. Test results showed that the yield stress and the plastic viscosity increased with the increase in graphene content and resting time while the yield stress and the plastic viscosity decreased with the increase in the dosage of superplasticizer. At higher shear rate range, the yield stress increased while the plastic viscosities decreased. The Herschel–Bulkley model with the lowest average standard error and standard deviation value was found to best fit the experimental data, whereas, Casson model was found to be the most unfitted model. Graphene reduces the flow diameter and electrical resistivity up to 9.3 and 67.8% and enhances load carrying capacity and strain up to 16.7 and 70.1% of the composite specimen as compared with plain cement specimen. Moreover, it opened a new dimension for graphene-cement composite as smart sensing building construction material. |
| first_indexed | 2024-03-06T05:52:36Z |
| format | Article |
| id | um.eprints-20897 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:52:36Z |
| publishDate | 2018 |
| publisher | SpringerOpen |
| record_format | dspace |
| spelling | um.eprints-208972020-02-06T04:17:12Z http://eprints.um.edu.my/20897/ Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites Rehman, Sardar Kashif Ur Ibrahim, Zainah Jameel, Mohammad Memon, Shazim Ali Javed, Muhammad Faisal Aslam, Muhammad Mehmood, Kashif Nazar, Sohaib TA Engineering (General). Civil engineering (General) The concrete production processes including materials mixing, pumping, transportation, injection, pouring, moulding and compaction, are dependent on the rheological properties. Hence, in this research, the rheological properties of fresh cement paste with different content of graphene (0.03, 0.05 and 0.10% by weight of cement) were investigated. The parameters considered were test geometries (concentric cylinders and parallel plates), shear rate range (300–0.6, 200–0.6 and 100–0.6 s −1 ), resting time (0, 30 and 60 min) and superplasticizer dosage (0 and 0.1% by weight of cement). Four rheological prediction models such as Modified Bingham, Herschel–Bulkley, Bingham model and Casson model were chosen for the estimation of the yield stress, plastic viscosity and trend of the flow curves. The effectiveness of these rheological models in predicting the flow properties of cement paste was verified by considering the standard error method. Test results showed that the yield stress and the plastic viscosity increased with the increase in graphene content and resting time while the yield stress and the plastic viscosity decreased with the increase in the dosage of superplasticizer. At higher shear rate range, the yield stress increased while the plastic viscosities decreased. The Herschel–Bulkley model with the lowest average standard error and standard deviation value was found to best fit the experimental data, whereas, Casson model was found to be the most unfitted model. Graphene reduces the flow diameter and electrical resistivity up to 9.3 and 67.8% and enhances load carrying capacity and strain up to 16.7 and 70.1% of the composite specimen as compared with plain cement specimen. Moreover, it opened a new dimension for graphene-cement composite as smart sensing building construction material. SpringerOpen 2018 Article PeerReviewed Rehman, Sardar Kashif Ur and Ibrahim, Zainah and Jameel, Mohammad and Memon, Shazim Ali and Javed, Muhammad Faisal and Aslam, Muhammad and Mehmood, Kashif and Nazar, Sohaib (2018) Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites. International Journal of Concrete Structures and Materials, 12 (1). p. 64. ISSN 1976-0485, DOI https://doi.org/10.1186/s40069-018-0293-0 <https://doi.org/10.1186/s40069-018-0293-0>. https://doi.org/10.1186/s40069-018-0293-0 doi:10.1186/s40069-018-0293-0 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Rehman, Sardar Kashif Ur Ibrahim, Zainah Jameel, Mohammad Memon, Shazim Ali Javed, Muhammad Faisal Aslam, Muhammad Mehmood, Kashif Nazar, Sohaib Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites |
| title | Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites |
| title_full | Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites |
| title_fullStr | Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites |
| title_full_unstemmed | Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites |
| title_short | Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites |
| title_sort | assessment of rheological and piezoresistive properties of graphene based cement composites |
| topic | TA Engineering (General). Civil engineering (General) |
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