Design of Flexible Pavements with Geogrid Reinforcement between Base and Sub-Base Layers Using IITPAVE

Abstract

This study investigates the application of geogrid reinforcement for improving the structural efficiency of flexible pavements. The pavement response is analyzed using IITPAVE based on the mechanistic–empirical design approach specified by IRC:37–2018. Geogrid is incorporated at the interface between the base and sub-base layers, and its contribution is evaluated using LCR and MIF approaches. The critical pavement strains are assessed to examine the structural response and suitability of the reinforced pavement system. The study highlights the potential of geogrid reinforcement for optimizing pavement materials and achieving economical and sustainable pavement construction.

Introduction

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• Check technical consistency with IRC:37-2018 and IRC:SP:59-2019

Conclusion

For a design traffic of 175 msa and a subgrade CBR of 7 %, flexible pavement sections were proportioned without and with a geogrid at the base–sub-base interface. Taking LCR as 1.4 and MIF as 1.6, the bituminous layer could be 10 mm thinner, the WMM base 70 mm thinner and the GSB 50 mm thinner, cutting the overall thickness by 130 mm (19 %). The computed strains under LCR (133.5 and 276.6 µ?) and MIF (132.1 and 275.7 µ?) remained within the allowed values, and the two approaches agreed closely.

References

[1] IRC:37-2018, Guidelines for the Design of Flexible Pavements (Fourth Revision), Indian Roads Congress, New Delhi. [2] IRC: SP:59-2019, Guidelines for Use of Geosynthetics in Road Pavements and Associated Works, Indian Roads Congress, New Delhi. [3] J. Leng and M. A. Gabr, “Characteristics of geogrid reinforced aggregate base course,” 2005. [4] M. Abu-Farsakh and Q. Chen, “Performance of geosynthetic reinforced pavements,” 2012. [5] J. P. Giroud and J. Han, “Design method for geogrid-reinforced unpaved roads,” 2004. [6] J. Han and J. P. Giroud, “Behavior of geogrid-reinforced pavement systems,” 2011. [7] H. A. Susanto, S.-H. Yang and M. A. Duc, “Performance evaluation of geogrid in flexible pavement using mechanical-empirical design approach,” 2021. [8] M. Kim and J. H. Lee, “Effects of geogrid reinforcement in low volume flexible pavement,” 2013. [9] E. M. Ibrahim, S. M. El-Badawy and H. M. Ibrahim, “Effect of geogrid reinforcement on flexible pavements,” 2017. [10] G. N. Goud, S. S. Mouli and B. Umashankar, “Design and sustainability aspects of geogrid reinforced flexible pavements,” 2020. [11] R. Baadiga and U. Balunaini, “Evaluation of pavement design input parameters of biaxial and triaxial geogrid stabilized flexible pavements overlying soft subgrades,” 2023. [12] S. M. Polisetti and R. Baadiga, “Engineering geogrid enabled low carbon and aggregate efficient flexible pavement,” 2025. [13] V. Kommanamanchi, H. Chennarapu and U. Balunaini, “Mechanistic evaluation of biaxial and triaxial geogrids and geocells reinforcing C&D waste aggregate layers for sustainable flexible pavements,” 2025. [14] H. K. Palla and B. Raghu Ram, “Design of flexible pavement using IITPAVE as per IRC-37-2018 and minimize the pavement thickness by using geogrid,” Int. J. Sci. Res. Eng. Manag. (IJSREM), vol. 08, no. 05, May 2024, DOI: 10.55041/IJSREM34322. [15] AASHTO, Guide for Design of Pavement Structures, American Association of State Highway and Transportation Officials, Washington, D.C., 1993. \\

Copyright

Copyright © 2026 Mrs. Peethala Meghavarsha, Dr. G. V. R. Prasada Raju. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.