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  1. Home
  3. A Comprehensive Study On The Impact Of Human Hair Fiber And Millet Husk Ash On Concrete Properties: Response Surface Modeling And Optimization.
  1. Home
  3. A Comprehensive Study On The Impact Of Human Hair Fiber And Millet Husk Ash On Concrete Properties: Response Surface Modeling And Optimization.

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A comprehensive study on the impact of human hair fiber and millet husk ash on concrete properties: response surface

Naraindas Bheel1, Muhammad Alamgeer Shams2, Samiullah Sohu3

  • 1Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar Tronoh, 32610, Perak, Malaysia. naraindas04@gmail.com.

Scientific Reports
|June 12, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

This study introduces a sustainable concrete mix using human hair (HH) fibers and millet husk ash (MHA) to replace sand. Optimized at 30% MHA and 1% HH fibers, it enhances concrete strength while promoting eco-friendly construction and waste reduction.

Keywords:
ConcreteHardened propertiesHuman hair fiberMillet husk ashRSM modeling and optimization

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Area of Science:

  • Civil Engineering
  • Materials Science
  • Environmental Science

Background:

  • Construction industry faces challenges with waste generation and resource depletion.
  • Sustainable alternatives are crucial for environmentally responsible building practices.
  • Repurposing waste materials like human hair and agricultural byproducts offers a circular economy approach.

Purpose of the Study:

  • To investigate the impact of human hair (HH) fibers and millet husk ash (MHA) on concrete properties.
  • To optimize the blend proportions of MHA (as a sand substitute) and HH fibers for enhanced mechanical performance.
  • To evaluate the fresh and mechanical characteristics of sustainable concrete mixes.

Main Methods:

  • Preparation of 225 concrete specimens with varying MHA (10-40%) and HH fiber (0.5-2%) content.
  • Testing of compressive and splitting tensile strengths after 28 days of curing.
  • Application of response surface methodology (RSM) and analysis of variance (ANOVA) for modeling and optimization.

    • Main Results:

    • The optimal concrete blend consists of 30% MHA and 1% HH fibers, yielding compressive strength of 33.88 MPa and tensile strength of 3.47 MPa.
    • Increased MHA and HH fiber content reduced concrete's dry density and workability.
    • Developed prediction models with R-squared values from 72% to 99% were validated using ANOVA.

    Conclusions:

    • A concrete mix with 30% MHA and 1% HH fibers offers superior mechanical properties and sustainability.
    • This approach effectively reduces construction waste and promotes the circular economy.
    • The optimized blend is recommended for resilient and environmentally sustainable construction practices.