Beni-Suef University Journal of Basic and Applied Sciences (Jul 2024)

An assessment of workability, mechanical and durability properties of high-strength concrete incorporating nano-silica and recycled E-waste materials

  • Pawan Hinge,
  • Tushar Shende,
  • Rahul Ralegaonkar,
  • Bhupesh Nandurkar,
  • Sanjay Raut,
  • Muralidhar Kamath,
  • Adithya Tantri,
  • Sujay Raghavendra Naganna

DOI
https://doi.org/10.1186/s43088-024-00521-w
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 15

Abstract

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Abstract Background Presently, the proper disposal of E-waste is a major challenge for all nations. Portland cement and aggregates continue to play a major role in the construction industry's operations. Meanwhile, natural resources like gravel (aggregates) are becoming scarce. Thus, E-waste is now offering the building industry a chance to replace traditional aggregates. The main goal of the current study is to determine the highest amount of E-waste that may be replaced with 10-mm coarse aggregates with a nano-silica associated ternary blend in M-60 grade high-strength concrete while still maintaining the designed concrete's mechanical, durability, microstructural and workability characteristics. Results When compared to normal concrete, concrete with 15% E-waste replacement maintained the design-required compressive, flexural and tensile strength properties. When the E-waste plastic component percentage is considerably high (15–30%), there is a significant decremental performance regarding the mechanical properties and the decremental rate is found to be in the range of 13–23%. Even the microstructure characteristics of concrete validate the mechanical performance of concrete. Nevertheless, the durability characteristics of E-waste incorporated concrete were found to be promising. Conclusions The overall outcome of the study recommends 15% as the optimal replacement percentage of E-waste for conventional concrete, and it is recommended to adopt for real-time practices.

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