Abstract
Nanoparticles (NPs) can be used as useful additives in construction materials. In this work, nanosilica (NS) was used in a way that prevented agglomeration of NPs as a pozzolanic material to improve Portland cement hydration and thus improve the properties of concrete. The effects of NS and polystyrene (PS) microspheres coated with NS (PS@NS) on cement paste properties were examined. Spherical PS particles were prepared by dispersion polymerisation of styrene in polar solvents and characterised by Fourier transform infrared spectroscopy and environmental scanning electron microscope. The PS@NS were synthesised using the Stöber method. Analysis showed that an amorphous NS layer was deposited uniformly on the PS particles and the core/shell structure reduced the aggregation of the NS effectively. It was also found that, compared with cement paste blended with NS, the PS@NS improved cement hydration due to the agglomeration affect.
Original language | English |
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Pages (from-to) | 15-23 |
Number of pages | 9 |
Journal | Advances in Cement Research |
Volume | 37 |
Issue number | 1 |
DOIs | |
State | Published - 11 May 2024 |
Bibliographical note
Publisher Copyright:© 2025 Emerald Publishing Limited: All rights reserved.
Keywords
- UN SDG 12: Responsible consumption and production
- UN SDG 13: Climate action
- UN SDG 7: Affordable and clean energy
- UN SDG 9: Industry, innovation and infrastructure
- calcium carbonate
- calcium silicate hydrate (CSH)
- compressive strength
- light weight
- pozzolans