Cement nanocomposites containing montmorillonite nanosheets modified with surfactants of various chain lengths
Cements; Chain length; Clay minerals; Compressive strength; Dispersions; Durability; Morphology; Nanocomposites; Nanosheets; Alkyl chain lengths; Composite morphology; Hydration degree; Mechanical performance; Montmorillonite (MMT); Organic surfactants; Surfactant chain length; Water penetration; Su...
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2023
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my.uniten.dspace-263342023-05-29T17:09:15Z Cement nanocomposites containing montmorillonite nanosheets modified with surfactants of various chain lengths Oh J.-A. Zhuge Y. Araby S. Wang R. Yu H. Fan W. Liu M. Lee S.-H. Alam M.J. Ma J. 57218478104 57241579900 55636344700 56082384600 57190071278 57213457191 55765000930 26663479700 57221232917 56723049800 Cements; Chain length; Clay minerals; Compressive strength; Dispersions; Durability; Morphology; Nanocomposites; Nanosheets; Alkyl chain lengths; Composite morphology; Hydration degree; Mechanical performance; Montmorillonite (MMT); Organic surfactants; Surfactant chain length; Water penetration; Surface active agents To investigate the dispersion of montmorillonite (MMT) nanosheets in cement, MMT was modified with three organic surfactants of various alkyl chain lengths (C1-OMMT, C10-OMMT and C16-OMMT) and then compounded with cement. Of all nanocomposites, the one containing 0.5 wt% of C10-OMMT exhibited the most significant enhancement in compressive strength by 11.2% and in the hydration degree by 11% with low porosity, corresponding to the improved microstructure and durability. The high performance is determined by two factors: (i) the filling effect � the surfactants promote the dispersion of MMT nanosheets in cement and (ii) the reinforcement by the modified nanosheets, which may be compromised by the unnecessarily high fraction of long-chain surfactants. These two conflicting factors can be balanced by selecting an appropriate surfactant chain length, which is key to the resulting composite morphology and thus high mechanical performance and durability in terms of resistance to water penetration. � 2020 Elsevier Ltd Final 2023-05-29T09:09:14Z 2023-05-29T09:09:14Z 2021 Article 10.1016/j.cemconcomp.2020.103894 2-s2.0-85098536102 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098536102&doi=10.1016%2fj.cemconcomp.2020.103894&partnerID=40&md5=9f6a66b1d8b6e50d60cd541b22aa0371 https://irepository.uniten.edu.my/handle/123456789/26334 116 103894 Elsevier Ltd Scopus |
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Cements; Chain length; Clay minerals; Compressive strength; Dispersions; Durability; Morphology; Nanocomposites; Nanosheets; Alkyl chain lengths; Composite morphology; Hydration degree; Mechanical performance; Montmorillonite (MMT); Organic surfactants; Surfactant chain length; Water penetration; Surface active agents |
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57218478104 Oh J.-A. Zhuge Y. Araby S. Wang R. Yu H. Fan W. Liu M. Lee S.-H. Alam M.J. Ma J. |
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Article |
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Oh J.-A. Zhuge Y. Araby S. Wang R. Yu H. Fan W. Liu M. Lee S.-H. Alam M.J. Ma J. |
| spellingShingle |
Oh J.-A. Zhuge Y. Araby S. Wang R. Yu H. Fan W. Liu M. Lee S.-H. Alam M.J. Ma J. Cement nanocomposites containing montmorillonite nanosheets modified with surfactants of various chain lengths |
| author_sort |
Oh J.-A. |
| title |
Cement nanocomposites containing montmorillonite nanosheets modified with surfactants of various chain lengths |
| title_short |
Cement nanocomposites containing montmorillonite nanosheets modified with surfactants of various chain lengths |
| title_full |
Cement nanocomposites containing montmorillonite nanosheets modified with surfactants of various chain lengths |
| title_fullStr |
Cement nanocomposites containing montmorillonite nanosheets modified with surfactants of various chain lengths |
| title_full_unstemmed |
Cement nanocomposites containing montmorillonite nanosheets modified with surfactants of various chain lengths |
| title_sort |
cement nanocomposites containing montmorillonite nanosheets modified with surfactants of various chain lengths |
| publisher |
Elsevier Ltd |
| publishDate |
2023 |
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1806428131618193408 |