Abstract
This study reviews the available design methods for the use of geogrid in unpaved roads. Characterization and properties of geogrid for effective utilization in pavements have been discussed briefly. The effective optimal location in the pavement, minimum number, interaction coefficient, and tensile strength criteria of geogrid have been well explained in this study. This study also includes results of experimental work, small scale laboratory test, and field performance of geogrid reinforced flexible road pavement. Currently, there is no proper guideline available for the use of geogrid reinforcement in flexible pavements. All the past application of geogrid in pavements is mainly based on experience, field study, laboratory study, and few limited available guidelines. This study provides a detail description of previous findings and research gap for the use of future research.
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