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Rheological Properties of Cement Pastes with Multiwalled Carbon Nanotubes
Joint Authors
Skripkiunas, Gintautas
Karpova, Ekaterina
Barauskas, Irmantas
Bendoraitiene, Joana
Yakovlev, Grigory
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-11
Country of Publication
Egypt
No. of Pages
13
Abstract EN
The evaluation of rheological properties of cement systems is getting more relevant with growing interest to self-consolidating concrete (SCC), high-performance concrete (HPC) and ultrahigh-performance concrete (UHPC).
The rheology models are a perspective tool to predict and manage the properties of cement systems in the fresh and hardened state.
The current research is focused on the rheological test of cement systems modified by multiwalled carbon nanotubes (MWCNT) dispersion with and without polycarboxylate ether (PCE).
The content of dispersion with 1% concentration of MWCNT in cement pastes varied from 0.125 to 0.5% by weight of cement.
The dosage of PCE was taken as 0.6% by weight of cement.
The cement pastes were prepared based on Portland cement without mineral additives.
The rheological test was carried out at 5, 30, 60, and 120 min after mixing of cement paste.
The rheological test established that modification of cement pastes by MWCNT dispersion in dosage 0.25% leads to the decrease of yield stress by 30.7% and increase of plastic viscosity by 29.6%.
The combined modification by PCE and MWCNT dispersion shows the decrease in plastic viscosity of cement pastes by 9.90% in dosage of MWCNT equal to 0.5% by weight of cement, reduction of water demand by 20% for the same workability, and decrease of yield stress till 0 Pa.
It gives the ability to obtain the self-compacting mixtures.
The cement pastes with and without MWCNT dispersion revealed the shear-thinning behavior during 120 min after mixing.
The modification of cement pastes by PCE with and without MWCNT dispersion showed the shear-thickening behavior which remains during 120 min after mixing.
American Psychological Association (APA)
Skripkiunas, Gintautas& Karpova, Ekaterina& Barauskas, Irmantas& Bendoraitiene, Joana& Yakovlev, Grigory. 2018. Rheological Properties of Cement Pastes with Multiwalled Carbon Nanotubes. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1122234
Modern Language Association (MLA)
Skripkiunas, Gintautas…[et al.]. Rheological Properties of Cement Pastes with Multiwalled Carbon Nanotubes. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-13.
https://search.emarefa.net/detail/BIM-1122234
American Medical Association (AMA)
Skripkiunas, Gintautas& Karpova, Ekaterina& Barauskas, Irmantas& Bendoraitiene, Joana& Yakovlev, Grigory. Rheological Properties of Cement Pastes with Multiwalled Carbon Nanotubes. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1122234
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122234