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This research investigates the potential of incorporating waste cigarette butts into concrete mixtures as a sustainable approach to reducing both construction material environmental impact and cigarette butt waste accumulation. Cigarette butts, a ubiquitous waste product, persist in landfills for decades, leaching harmful toxins. This study explores the effects of incorporating cigarette butts on the mechanical and physical properties of concrete. Cigarette butts were incorporated into concrete mixes at varying concentrations (0%, 0.25%, 0.375%, and 0.5% by weight of the total concrete mix). Five hypotheses were tested: the addition of cigarette butts will reduce compressive strength, thermal conductivity, and self-weight while enhancing ductility and water absorption. The results confirmed the hypotheses related to compressive strength, thermal conductivity, and self-weight. Specifically, the addition of 0.25% cigarette butts led to a reduction in compressive strength by 10.6%, flexural strength by 5.7%, and thermal conductivity by 27% in 28-day specimens. These reductions were even more pronounced at higher concentrations of cigarette butts. While the absolute values of thermal conductivity may not be typical for concrete, the relative changes indicate a reduction due to the inclusion of cigarette butts. Additionally, self-weight decreased with increasing cigarette butt content. Water absorption increased, as anticipated, but the effect on ductility remained inconclusive. The observed reduction in flexural strength with the inclusion of cigarette butts may not be a significant concern. The findings of this study suggest that utilizing cigarette butts in concrete presents a promising avenue for sustainable construction, particularly for non-structural elements where reduced mechanical strength (like the observed flexural strength decrease) may be acceptable in light of benefits such as lower density and potentially improved thermal insulation. Further research is recommended to assess the long-term durability of cigarette butt-concrete composites, including their freeze-thaw resistance and chemical durability. Exploring alternative testing methods for ductility is also crucial to obtaining more definitive results for this property.

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Green Concrete – The Effect on Physical and Mechanical Properties by Adding Cigarette Butts to Concrete

  • 会议论文

  • 发表日期：

    2026年

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  • Julia Vizel,
  • Kertu Ilves,
  • Ellen Marie Lääne

摘要

This research investigates the potential of incorporating waste cigarette butts into concrete mixtures as a sustainable approach to reducing both construction material environmental impact and cigarette butt waste accumulation. Cigarette butts, a ubiquitous waste product, persist in landfills for decades, leaching harmful toxins. This study explores the effects of incorporating cigarette butts on the mechanical and physical properties of concrete. Cigarette butts were incorporated into concrete mixes at varying concentrations (0%, 0.25%, 0.375%, and 0.5% by weight of the total concrete mix). Five hypotheses were tested: the addition of cigarette butts will reduce compressive strength, thermal conductivity, and self-weight while enhancing ductility and water absorption. The results confirmed the hypotheses related to compressive strength, thermal conductivity, and self-weight. Specifically, the addition of 0.25% cigarette butts led to a reduction in compressive strength by 10.6%, flexural strength by 5.7%, and thermal conductivity by 27% in 28-day specimens. These reductions were even more pronounced at higher concentrations of cigarette butts. While the absolute values of thermal conductivity may not be typical for concrete, the relative changes indicate a reduction due to the inclusion of cigarette butts. Additionally, self-weight decreased with increasing cigarette butt content. Water absorption increased, as anticipated, but the effect on ductility remained inconclusive. The observed reduction in flexural strength with the inclusion of cigarette butts may not be a significant concern. The findings of this study suggest that utilizing cigarette butts in concrete presents a promising avenue for sustainable construction, particularly for non-structural elements where reduced mechanical strength (like the observed flexural strength decrease) may be acceptable in light of benefits such as lower density and potentially improved thermal insulation. Further research is recommended to assess the long-term durability of cigarette butt-concrete composites, including their freeze-thaw resistance and chemical durability. Exploring alternative testing methods for ductility is also crucial to obtaining more definitive results for this property.