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Journal of Structural Engineering and Management Original Research

Evaluating the Structural Performance of Concrete with Partial Replacement of Fine Aggregate by Plastic Waste

  1. Arpit Kushwaha
  2. Harsh Rathore

Abstract

This work evaluates the performance of concrete incorporating plastic waste as a partial replacement for fine aggregate, at replacement levels of 0%, 5%, 10%, 15%, and 20%. Various tests were conducted on fresh and hardened concrete to assess workability, strength, and durability. The slump cone and compaction factor tests were used to measure workability, yielding a slump range between 25–30 mm and a compaction factor of 0.98, indicating medium workability. Compressive strength tests revealed that concrete with 5% plastic replacement achieved near-optimal strength, comparable to conventional concrete, with a 28-day compressive strength of 30.01 N/mm². Similarly, the highest split tensile and flexural strengths were observed at 5% plastic replacement, beyond which strength values decreased as plastic content increased. The findings indicate that plastic waste can enhance certain mechanical properties when used at low replacement levels, particularly 5%, and offer a sustainable approach to utilizing plastic waste in concrete. This study underscores the potential of plastic-enhanced concrete as a viable alternative in construction, contributing to sustainable waste management practices.

Keywords

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