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<p>Availability of good quality aggregate is big hurdles in pavements construction due to limited natural resources, uneven geographical distribution, and environmental degradation. The aggregates material used for pavement should be uniform, can restrict erosion under adverse conditions such as freezing and thawing. Hence, an alternative material like recycled aggregate, industrial by-product, geosynthetics are being used in the pavement construction. In recent advancement, geogrids with their high tensile strength, stiffness, interlocking mechanism, and improved load distribution are acknowledged worldwide. In this study, a field plate load test was conducted to investigate the equivalency of geogrid-reinforced flexible pavement with respect to conventional pavement. The pressure deflection curve was plotted to evaluate the structural behaviour for both the section. The average settlement estimated at standard tyre pressure of 560&#xa0;kPa was 1.2&#xa0;mm and 1.28&#xa0;mm for reinforced and conventional sections, respectively. It is concluded that at lower pressure geogrid shows negligible effect while substantial effect at higher pressure. Furthermore, the use of geogrid reduced overall cross-section thickness by 130&#xa0;mm, contributing to the material saving, cost-effectiveness, and shortens construction timelines. </p>

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Optimization of Pavement Crust Thickness Using Geogrid: A Study Based on Field Test

  • 期刊论文

  • 发表日期：

    2025年6月20日

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  • Deeraj Kumar Reddy,
  • Ravi Kishore Reddy,
  • Manish Barot

摘要

Availability of good quality aggregate is big hurdles in pavements construction due to limited natural resources, uneven geographical distribution, and environmental degradation. The aggregates material used for pavement should be uniform, can restrict erosion under adverse conditions such as freezing and thawing. Hence, an alternative material like recycled aggregate, industrial by-product, geosynthetics are being used in the pavement construction. In recent advancement, geogrids with their high tensile strength, stiffness, interlocking mechanism, and improved load distribution are acknowledged worldwide. In this study, a field plate load test was conducted to investigate the equivalency of geogrid-reinforced flexible pavement with respect to conventional pavement. The pressure deflection curve was plotted to evaluate the structural behaviour for both the section. The average settlement estimated at standard tyre pressure of 560 kPa was 1.2 mm and 1.28 mm for reinforced and conventional sections, respectively. It is concluded that at lower pressure geogrid shows negligible effect while substantial effect at higher pressure. Furthermore, the use of geogrid reduced overall cross-section thickness by 130 mm, contributing to the material saving, cost-effectiveness, and shortens construction timelines.