Evaluation of recycled glass and steel slag as partial replacement of filler in hot mix asphalt

  • Odunfa Simeon Olutayo Civil Engineering Department, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria
  • Agbaje Olabode Eniola Civil Engineering Department, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria
  • Abiola Oladapo Samson Civil Engineering Department, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria
  • Igba Uvieoghene Tobit Civil Engineering Department, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria
  • Gbadewole Opeyemi Antoinette Civil Engineering Department, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria
  • Adetiloye Adebukola Civil Engineering Department, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria
DOI: https://doi.org/10.31075/PIS.71.01.02
Keywords: Recycled, Crushed Glass, Steel slag dust, Hot Mixed Asphalt, Marshal Stability

Abstract

Recent studies have revealed the need to increase the volumetric properties of hot mixed asphalt (HMA) with various industrial solid waste materials. Hence, this study was carried out to investigate the use of crushed glass (CG) and steel slag dust (SSD) as fillers partially replaced in HMA. The optimum bitumen content (OBC) suitable for design mix was determined. The tested samples were prepared with CG and SSD separately, and the combination of the best results in each were mixed equally (CG+SSD) to replace filler partially with 5, 10, 15 and 20% respectively. Both conventional  HMA, and modified samples were examined to determine their volumetric properties and stability. The OBC suitable for HMA mix design was 6%. The addition of CG, SSD, and CG+SSD had significant improvement on the properties of HMA, and the best results was observed at 15% replacement with 3.28%, 7.81%, and 55.49% increase in stability respectively compared with control HMA. The ANOVA results on the modified asphalt revealed that void in mix was not influenced by the modification of CG and SSD. In conclusion, 15% of CG+SSD as filler partial replaced in HMA can be considered reasonable alternative filler for concrete asphalt mixture production

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Published
2025-04-02
How to Cite
Olutayo, O., Eniola, A., Samson, A., Tobit, I., Antoinette, G., & Adebukola, A. (2025). Evaluation of recycled glass and steel slag as partial replacement of filler in hot mix asphalt. Journal of Road and Traffic Engineering, 71(1), 9-16. https://doi.org/10.31075/PIS.71.01.02
Issue
Vol 71 No 1 (2025): Journal of Road and Traffic Engineering
Section
Articles

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