In the rapidly evolving infrastructure landscape, where the development of roads, railways, airports, water and waste management, etc., have become a necessity, geosynthetics have emerged as a transformative material for infrastructure development. In line with this, the sector has gradually witnessed a wider adoption of this alternative material over the years.
Conventional infrastructure construction has led to the depletion of a significant amount of natural resources, both during material extraction as well as the construction process. In this context, geosynthetics have emerged as a modern substitute that reduces ecological footprints and resource exploitation. Many contemporary geosynthetic products now incorporate recycled plastics and natural fibres, further amplifying their sustainability. Particularly, geosynthetic clay liners and geomembranes have often played a crucial role in preventing environmental contamination.
Mapping sector-wise deployment
India’s infrastructure sector has been progressively embracing alternative construction materials, with geosynthetics emerging as the preferred choice. The government’s ambitious infrastructure development programmes and schemes, coupled with increasing environmental consciousness, have created a fertile ground for the widespread adoption of geosynthetics. From road and railway construction to landfill management and erosion control, geosynthetics are revolutionising infrastructure development.
Government initiatives such as the Smart Cities Mission and Bharatmala Pariyojana are creating high demand for geosynthetic materials in urban and rural projects. The government is encouraging the use of these sustainable materials through regulations and initiatives, such as the approval of coir geotextiles in rural road construction under the Pradhan Mantri Gram Sadak Yojana-III scheme.
The road sector was one of the earliest to adopt geosynthetics in the landmark project in the mid-1980s, which was National Highway (NH)-1 near Ludhiana. This project featured the first geosynthetic-reinforced soil structure, utilising geostrips as reinforcing elements and precast concrete panels as facia. The wall, reaching a maximum height of 8 metres, achieved over 15 per cent cost savings and faster construction compared to traditional reinforced concrete walls.
Since then, the adoption of geosynthetics has continued to grow. Major projects like the Gharni-Nitur-Nilanga road SH-67 in Maharashtra, NH-55 Siliguri-Darjeeling road in West Bengal and the Shimla Bypass Project (Package 1) have been some major projects to have utilised the material. Most recently, geosynthetics have been a key part of the Delhi-Mumbai Expressway, where it is being used to complete portions of the retaining wall and erosion control measures. The project is expected to be completed by the end of 2025 or early 2026.
The railways have been another enabler of geosynthetic applications. The Ahmednagar railway project in Maharashtra is a key example. By strategically utilising Ocean Geotextile and Ocean Geogrid-30 Kn, the project enhanced track bed stability, improved infrastructure durability and achieved significant cost efficiencies. Approximately 129,055 square m of geosynthetic materials were deployed to minimise soil movement and increase bearing capacity. The dedicated freight corridor project is another significant initiative.
A landmark project that employed geosynthetics was the construction of a 45 m high reinforced slope with gabion/wraparound facia for the Pakyong airport runway in the challenging terrains of Sikkim. In the airport sector, geosynthetics help bolster runway strength and longevity, reducing maintenance costs and enhancing safety.
In order to prevent the contamination of surface water and groundwater, geosynthetics are being utilised for building hazardous waste containment systems and landfill linings. They also help with the cleaning and dewatering of sludge. Geosynthetics are used to line reservoirs, dams and canals, protecting irrigation and drinking water sources. Waste management also utilises this material to create impermeable barriers in landfills, preventing water contamination.
Similarly, in water treatment, they contribute to safe containment in reservoirs and aid in filtration processes. Geosynthetics have played a crucial role in hydraulic structures such as the Kadamparai and Servalar dams in Tamil Nadu; in coastal engineering projects such as the Narmada river project in Gujarat; and in water treatment projects such as the Matrimandir Lake project in Tamil Nadu. In coastal engineering projects, geosynthetics provide benefits such as erosion control capabilities, safeguarding shorelines and maintaining embankment infrastructure.
Technological potential
Technological innovations are transforming geosynthetics into increasingly sophisticated materials for construction projects. Smart geosynthetics now integrate advanced sensors and data analytics capabilities, enabling the real-time monitoring of infrastructure projects. Researchers are exploring nanotechnology integration, developing materials with enhanced properties such as superior strength, improved durability and self-healing capabilities. The geosynthetics industry is also making significant strides in creating biodegradable solutions that offer temporary reinforcement while minimising long-term environmental impact.
Smart geosynthetics can also help improve the safety of infrastructure projects through early warning systems and ongoing monitoring. With this, engineers can detect signs of structural instability in embankments or retaining walls by integrating sensors into the materials. This enables timely intervention and evacuation, reducing mishaps and enhancing general safety for both residents and infrastructure users. Real-time data monitoring enables proactive maintenance, allowing informed decisions about maintenance schedules and resource allocation.
The manufacturing ecosystem for geosynthetics in India is rapidly evolving as well. Government initiatives such as Make in India are accelerating the use of these advanced materials. Maharashtra and Gujarat have gained a first-mover advantage, emerging as primary centres for geosynthetic production and application. Domestic manufacturers are investing in research and development (R&D), creating technologically advanced products that compete with global standards. Developing this ecosystem is crucial for reducing dependency on imported technologies and creating a robust indigenous geosynthetics industry.
Sustainability front
The application of geosynthetics across infrastructure projects symbolises a transformative shift in conceptualising, designing and implementing sustainable infrastructure. As global challenges such as climate change, resource scarcity and urbanisation intensify, geosynthetics stand at the forefront of sustainable construction. A study by the International Geosynthetics Society, which reviewed 25 applications of geosynthetics, found an average of 65 per cent decrease in carbon footprint when employing geosynthetics.
Incorporating geosynthetics drastically minimises the carbon footprint of projects. They also regulate water infiltration and prevent erosion. Geosynthetics can help develop sustainable landscapes, conserve wildlife by maintaining habitats, enhance water quality and reduce erosion. While geocells can stabilise slopes and stop erosion, geotextiles can filter run-off water and keep contaminants out of streams. Water habitats such as wetlands can also be constructed from geomembranes.
Moreover, in achieving sustainable development goal 6 – guaranteeing that everyone has access to and can sustainably manage water and sanitation – geosynthetics can play an essential role.
The use of building supplies such as sand, aggregate, concrete, lime, cement and steel can be reduced or replaced with geosynthetics. This helps reduce emissions and energy consumption by lowering the requirement for material transportation.
Future outlook
Despite their immense potential, the widespread adoption of geosynthetics requires continued investment in R&D, along with awareness among all stakeholders. The Indian geosynthetics market is poised for substantial growth, driven by infrastructure modernisation projects, with an increasing sustainability focus, technological advancements and supportive government policies. As the technology continues to evolve, geosynthetics are expected to play an increasingly critical role in addressing complex infrastructural challenges across sectors while maintaining a commitment to ecological sustainability.
The National Infrastructure Pipeline plans to invest Rs 111 trillion in infrastructure development, which is expected to further boost the country’s geosynthetics industry. These materials represent more than just a material technology; going forward, they will offer a promising pathway for India to build resilient, efficient and environmentally responsible infrastructure.
