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Deformation Characteristics of Rubber Waste Powder–Clay Mixtures

Author

Listed:
  • Davood Akbarimehr

    (Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran 15916, Iran)

  • Alireza Rahai

    (Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran 15916, Iran)

  • Abolfazl Eslami

    (Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran 15916, Iran)

  • Moses Karakouzian

    (Department of Civil Engineering, University of Nevada, Las Vegas, NV 89154, USA)

Abstract

With the increasing accumulation of rubber waste, the potential reuse of rubber fillers offers a promising solution to enhance the engineering properties of low-plasticity soils while promoting environmental sustainability. In this study, the effect of rubber waste powders (RWPs) on the consolidation and deformation properties of low-plasticity clay soil (CS) was investigated using a fully automated consolidation testing procedure for clay–rubber mixtures. The study involved adding 2% up to 30% RWPs to Tehran clay, and various parameters were evaluated through consolidation, compaction, and uniaxial strength tests. The results revealed that the consolidation volume of the mixture differed from that of the CS due to the elastic nature of the rubber wastes (RWs). To achieve higher precision, a new equation was proposed to determine the void ratio, along with modified e-log p’ curves for the clay–rubber mixture. Furthermore, the addition of RWPs to the CS resulted in moderated free swelling of the soil while enhancing ductility, compression index (Cc), swelling index (Cs), and recompression index (Cr). However, it was observed that the strength and modulus of elasticity of the mixture decreased with the increase in rubber content. Considering the variations in geotechnical parameters with different rubber contents, the appropriate rubber content can be selected based on specific applications in soil and rubber mixtures, considering the required geotechnical parameters. This study highlights the potential applications of RWPs as a material in civil and geotechnical engineering projects, providing valuable insights for sustainable and eco-friendly engineering practices.

Suggested Citation

  • Davood Akbarimehr & Alireza Rahai & Abolfazl Eslami & Moses Karakouzian, 2023. "Deformation Characteristics of Rubber Waste Powder–Clay Mixtures," Sustainability, MDPI, vol. 15(16), pages 1-18, August.
  • Handle: RePEc:gam:jsusta:v:15:y:2023:i:16:p:12384-:d:1217531
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    Citations

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    Cited by:

    1. Davood Akbarimehr & Abolfazl Eslami & Asgar Nasiri & Mohammad Rahai & Moses Karakouzian, 2024. "Performance Study of Sustainable Concrete Containing Recycled Aggregates from Non-Selected Construction and Demolition Waste," Sustainability, MDPI, vol. 16(7), pages 1-26, March.
    2. Zhen Liu & Jingqi Wang & Yi Gao & Jin Liao & Chunhui Lan & Cuiying Zhou, 2023. "Development of Self-Sustaining Improvement Material for a Mud Film of the Weathered Soil of Red Beds," Sustainability, MDPI, vol. 15(21), pages 1-22, October.

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