ABSTRACT
Ground improvement involves modifying soil properties to enhance strength and stability for construction. Traditional methods like soil replacement are reliable but costly and time-consuming, while geosynthetic solutions provide sustainable and economic alternative, reducing material usage and project timelines. This paper presents the use of such geosynthetic solutions for a stretch of NH-34 from Barasat to Krishnagar, which was plagued by waterlogging and weak subsoil conditions, with low bearing capacity and vulnerability to excessive settlement and deep-seated failure. Initially, rock filling was adopted to address this issue. However, a granular layer reinforced with basal reinforcement (high-strength uniaxial geogrids, i.e., Paralink), non-woven geotextile (MacTex N), and geo-composite drains (MacDrain) was later adopted to provide a more sustainable solution. This approach improved the load-bearing capacity, enhanced drainage, and ensured embankment stability. Geosynthetics provided an efficient, eco-friendly solution for weak subsoils in waterlogged areas, reducing material usage and project timelines while ensuring long-term durability.
