Asphalt concrete pavement considers as the most common type of road pavements. In recent times, Hot Mix Asphalt (HMA) characterization is improved by many additives to withstand the increase of traffic load and volume, further to the impact of weather conditions. This paper aims to evaluate the HMA properties using a waste material, namely, palm leaves fiber (PLF). The modified HMA was prepared by adding small balls (using Modified Dry Process (MDP)) with 2, 4, and 6% from weight of aggregate. These balls are blend of PLF with emulsion and other ingredients. However, the volumetric and mechanical properties (Marshall test, indirect tensile strength (ITS)) were utilized to evaluate the mixture mechanical and volumetric properties. The results disclose the effect of PLF in improving tensile strength up to 16%, and Marshall Stability up to 43%, while the other volumetric properties changes being almost within the limitations of the specification. It is worth mentioning that the modified HMA has mechanical strength at intermediate and high temperature better than of conventional HMA, which maintains the possibility of replacement the common environment harmful technology by sustaining one.

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Characterizing Hot Mix Asphalt Comprising Palm Leaves Fiber

  • Noor Jawad Kadhim,
  • Shakir Al-Busaltan

摘要

Asphalt concrete pavement considers as the most common type of road pavements. In recent times, Hot Mix Asphalt (HMA) characterization is improved by many additives to withstand the increase of traffic load and volume, further to the impact of weather conditions. This paper aims to evaluate the HMA properties using a waste material, namely, palm leaves fiber (PLF). The modified HMA was prepared by adding small balls (using Modified Dry Process (MDP)) with 2, 4, and 6% from weight of aggregate. These balls are blend of PLF with emulsion and other ingredients. However, the volumetric and mechanical properties (Marshall test, indirect tensile strength (ITS)) were utilized to evaluate the mixture mechanical and volumetric properties. The results disclose the effect of PLF in improving tensile strength up to 16%, and Marshall Stability up to 43%, while the other volumetric properties changes being almost within the limitations of the specification. It is worth mentioning that the modified HMA has mechanical strength at intermediate and high temperature better than of conventional HMA, which maintains the possibility of replacement the common environment harmful technology by sustaining one.