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<p>The effects of fine aggregate, cement amount, and fibers on optimal mix design and skid resistance and mechanical strength of pavement rolled compacted concrete were investigated in this paper. The fine aggregate quantity was 0, 17, 34, and 51% of total aggregates and the ratio of cement to dry aggregates was 10, 13, 16, 19, and 22%. Polyolefin fibers with 0.75% of the concrete volume were used to compensate using coarse aggregate to provide mechanical and flexural strength. Twenty mix designs were initially considered, and the final ten were tested to have the least compressive strength. English Pendulum, sand patch, compressive, and flexural strengths tests were conducted to measure skid resistance and mechanical strength. The results showed that the most compressive strength and skid resistance was obtained by replacing 17 up to 34% of fine aggregate in the concrete without fibers. Whereas roller-compacted concrete specimens with 0.75 percent volume of fibers also had more adaptability.</p>

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Experimental investigation of the interaction between mechanical strength and skid resistance on the fiber-reinforced RCC pavements

  • 期刊论文

  • 发表日期：

    2025年7月8日

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  • Mohammad Kazem Sharbatdar,
  • Mahdi Navvabi,
  • Gholamali Shafabakhsh

摘要

The effects of fine aggregate, cement amount, and fibers on optimal mix design and skid resistance and mechanical strength of pavement rolled compacted concrete were investigated in this paper. The fine aggregate quantity was 0, 17, 34, and 51% of total aggregates and the ratio of cement to dry aggregates was 10, 13, 16, 19, and 22%. Polyolefin fibers with 0.75% of the concrete volume were used to compensate using coarse aggregate to provide mechanical and flexural strength. Twenty mix designs were initially considered, and the final ten were tested to have the least compressive strength. English Pendulum, sand patch, compressive, and flexural strengths tests were conducted to measure skid resistance and mechanical strength. The results showed that the most compressive strength and skid resistance was obtained by replacing 17 up to 34% of fine aggregate in the concrete without fibers. Whereas roller-compacted concrete specimens with 0.75 percent volume of fibers also had more adaptability.