Enhancing cement hydration by core/shell PS@SiO2 nanoparticles

Meytal Shalit, Maya Radune, Yaniv Knop, Yitzhak Mastai

Research output: Contribution to journalArticlepeer-review

Abstract

Nanoparticles are widely used in construction. Here, nano-SiO2 is employed, in a way that prevents agglomeration of the nanoparticles, as pozzolanic material to improve Portland cement hydration and to improve the properties of the concrete. To explore the effect of nano-SiO2 and core-shell PS@SiO2 on cement properties, spherical polystyrene particles were prepared by dispersion polymerization of styrene in polar solvents and characterized by FTIR and E-SEM. The core shells PS@SiO2 were synthesized by Stöber method. The results showed an amorphous nano-SiO2 layer can be deposited uniformly on polystyrene particles. This core/shell structure was reducing the aggregation of nano-SiO2 effectively. It was shown that PS@SiO2 particles improved the concrete performances compared to blended cement with nano-SiO2 due to the agglomeration affect.

Original languageEnglish
JournalAdvances in Cement Research
DOIs
StateAccepted/In press - 2024

Bibliographical note

Publisher Copyright:
© 2024 ICE Publishing. All rights reserved.

Keywords

  • C-S-H
  • Calcium carbonate
  • Compressive strength
  • Light weight
  • Pozzolans
  • 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

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