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Synergistic effects of nano titanium dioxide and waste glass powder on the mechanical and durability properties of concrete

  • 0Department of Civil Engineering, KLE Technological University's, Dr. M. S. Sheshgiri College of Engineering and Technology, Belagavi, Karnataka, India. baikerikarav@gmail.com.
Scientific Reports +

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November 11, 2024

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November 11, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

This study shows that combining waste glass powder and nano titanium dioxide (TiO2) enhances concrete

Area Of Science

  • Materials Science
  • Civil Engineering
  • Environmental Science

Background

  • Waste glass presents a significant landfill challenge.
  • Waste glass can be utilized as a sustainable pozzolanic material in concrete.
  • Nanomaterials like nano titanium dioxide (TiO2) offer potential improvements in concrete properties.

Purpose Of The Study

  • To evaluate the synergistic effects of waste glass powder and nano titanium dioxide (TiO2) on concrete's mechanical and durability characteristics.
  • To determine optimal replacement and addition percentages for these materials.
  • To assess the impact on fresh properties, mechanical strength, and resistance to various durability challenges.

Main Methods

  • Cement was partially replaced with 10% waste glass powder.
  • Nano titanium dioxide (TiO2) was added at 0.5%, 1%, and 1.5% by weight of cementitious material.
  • Evaluated properties included setting time, workability, compressive strength, flexural strength, sorptivity, acid/sulfate/chloride resistance, and elevated temperature performance.
  • Microstructural analysis was conducted using Scanning Electron Microscopy (SEM).

Main Results

  • The combined use of waste glass powder and nano titanium dioxide (TiO2) significantly improved mechanical properties (compressive and flexural strength) and durability (resistance to sorptivity, acid, sulfate, chloride attacks, and elevated temperatures).
  • Waste glass powder acted as a beneficial pozzolanic material.
  • Increasing nano titanium dioxide (TiO2) content led to a reduction in concrete workability.
  • SEM analysis revealed improved microstructure in the blended concrete.

Conclusions

  • The synergistic combination of waste glass powder and nano titanium dioxide (TiO2) offers a promising approach for enhancing concrete performance and sustainability.
  • Waste glass powder effectively replaces cement, contributing to resource efficiency.
  • While beneficial for strength and durability, careful consideration of nano titanium dioxide (TiO2) content is needed to manage workability.

Keywords:

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