--- title: "Case Study: Enhancing Runway Performance at Bangalore Airport with 63,602 SQM of Non-Woven Geotextile (200 GSM)" date: 2025-07-02 author: "Sales Team" url: https://oceangeosynthetics.com/runway-upgrade-at-blr-airport-geotextile/ --- July 2, 2025 | [Case Studies](https://oceangeosynthetics.com/category/case-studies/) # Case Study: Enhancing Runway Performance at Bangalore Airport with 63,602 SQM of Non-Woven Geotextile (200 GSM) Ocean Non Wovens supplied 63,602 SQM of Non-Woven Geotextile Fabric (200 GSM) for the runway upgrade at BLR Airport (Kempegowda International Airport, Bengaluru), which handles over 33 million passengers a year. The work covered new taxiways and strengthening of the runway subgrade layers, and the geotextile went in as a separation and filtration layer between the subgrade and the granular sub-base. ## Why geotextiles go under airfield pavements Airfield pavements carry heavy aircraft wheel loads repeated thousands of times. The traditional answer to a weak subgrade is more granular material, which costs money and haulage. A [non-woven geotextile](https://oceangeosynthetics.com/products/geotextile-manufacturers/) at the subgrade level protects the granular layers that are placed, so they keep their designed thickness and strength. - **Separation:** the fabric keeps the granular sub-base and the soil from mixing. Without it, fines push up into the aggregate under traffic and the aggregate punches down into wet soil, so the effective base gets thinner year by year. - **Filtration:** water passes through the fabric while soil particles are held back, so the subgrade can drain without washing out into the base. - **Drainage:** the needle-punched fabric also carries some water in its own plane, helping keep the subgrade surface from becoming waterlogged. - **Stabilisation:** by keeping the base clean and intact, the fabric helps spread load and limit rutting. A 200 GSM non-woven is not a primary reinforcement; where reinforcement is needed, a [geogrid](https://oceangeosynthetics.com/products/geogrid-manufacturers/) is used. ## The Bangalore Airport project ### Scope New taxiways and strengthening of runway subgrade layers at Bangalore International Airport. On an operating airfield, the materials had to perform reliably under heavy aircraft loads. ### Product supplied Ocean Non Wovens supplied **63,602 SQM of Non-Woven Geotextile Fabric (200 GSM)**, selected on tensile strength, puncture resistance, permeability and durability under cyclic loading. ### Technical specifications of the geotextile used | **Property** | **Value** | | --- | --- | | Type | Needle-punched Non-Woven | | GSM (ASTM D5261) | 200 GSM | | Grab Tensile Strength (ASTM D4632) | ≥ 400 N | | Elongation at Break (ASTM D4632) | ≥ 50% | | CBR Puncture Resistance (ASTM D6241) | ≥ 1200 N | | Permittivity / permeability (ASTM D4491) | As per product data sheet | | UV Resistance (ASTM D4355) | > 70% strength retention @500hrs | ### Installation process - **Subgrade preparation:** the soil was compacted and graded. - **Geotextile laying:** rolls were unrolled with an overlap of 300 mm between sheets, the usual minimum for separation layers on a firm subgrade. - **Aggregate layering:** granular sub-base (GSB) was placed directly over the geotextile. In general, aggregate is end-tipped and spread ahead of the plant so vehicles never run directly on the fabric. - **Quality assurance:** on-site pullout tests and puncture resistance checks were carried out at random intervals. ## Results and benefits 1. **More uniform support:** with the subgrade and sub-base kept separate, aircraft loads are carried more evenly and differential settlement is reduced. 2. **Cost savings:** reduced granular fill thickness gave material and transport savings, estimated at around 8–10%. 3. **Faster construction:** the fabric is quick to lay, even over undulating surfaces. 4. **Drainage in the monsoon:** the subgrade can shed water through the fabric without losing fines into the base. 5. **Less excavation and fill:** a thinner granular layer means less quarrying, haulage and earthwork. ## Further benefits on airfields - **Less pumping:** repeated wheel loads on saturated soil pump fines up into the base and eventually to the surface. The geotextile acts as a filter that stops this. - **Less foreign object debris (FOD):** a base that stays intact cracks and ravels less at the surface, which reduces loose material that can be ingested by aircraft engines. ## About Ocean Non Wovens Ocean Non Wovens makes needle-punched non-woven geotextiles tested to ASTM and [BIS standards](https://www.bis.gov.in/), and provides technical support, on-site supervision and custom specifications. Beyond airports, the same fabrics are used in railway embankments and [highway](https://oceangeosynthetics.com/suitable_sectors/road-highway/) foundations, where IRC SP:59 covers geosynthetics in road pavements. Explore our non-woven and woven geotextiles and other [geosynthetics](https://oceangeosynthetics.com/category/geosynthetics/) at [oceangeosynthetics.com](https://oceangeosynthetics.com/), see more [case studies](https://oceangeosynthetics.com/case-studies/), or call [+91 84472 26007](tel:+918447226007) to discuss your airport or civil engineering project. Get Ocean Geosynthetics in your Google feed[![](https://oceangeosynthetics.com/wp-content/uploads/2026/07/google-g-logo.svg)Add us as a preferred source on Google](https://www.google.com/preferences/source?q=https://oceangeosynthetics.com/) [![Landslide Prevention Project in Wayanad, Kerala – A Comprehensive Approach with Rockfall Barriers](https://oceangeosynthetics.com/wp-content/uploads/2024/08/Landslide-Prevention-Project-in-Wayanad-Kerala-%E2%80%93-A-Comprehensive-Approach-with-Rockfall-Barriers-300x200.png)](https://oceangeosynthetics.com/landslide-prevention-rockfall-barriers/) [Case Studies](https://oceangeosynthetics.com/category/case-studies/) [Landslide Prevention Project in Wayanad, Kerala, with Rockfall Barriers](https://oceangeosynthetics.com/landslide-prevention-rockfall-barriers/) Wayanad, in the Western Ghats of northern Kerala, has steep slopes, deep weathered soils and some of the heaviest monsoon rain in the state. Rockfalls… [See More](https://oceangeosynthetics.com/landslide-prevention-rockfall-barriers/) [![Non Woven Geotextiles for Ground Stabilisation](https://oceangeosynthetics.com/wp-content/uploads/2026/02/Non-Woven-Geotextiles-for-Ground-Stabilisation-300x200.webp)](https://oceangeosynthetics.com/reliance-jabalpur-project-non-woven-geotextile-case/) [Case Studies](https://oceangeosynthetics.com/category/case-studies/), [Geotextile](https://oceangeosynthetics.com/category/geotextile/) [Reliance Project, Jabalpur (Madhya Pradesh): Application of Non Woven Geotextiles for Ground Stabilisation and Drainage Performance](https://oceangeosynthetics.com/reliance-jabalpur-project-non-woven-geotextile-case/) At a Reliance project site in Jabalpur, Madhya Pradesh, Ocean Non Wovens supplied 1,600 SQM of Ocean Non Woven Geotextile (Polyester, 1.5 mm) for the… [See More](https://oceangeosynthetics.com/reliance-jabalpur-project-non-woven-geotextile-case/) [![](https://oceangeosynthetics.com/wp-content/uploads/2024/03/Ocean-HDPE-Liner-1mm-in-the-Waste-Oil-Pit-Project-300x150.webp)](https://oceangeosynthetics.com/ocean-hdpe-liner-1mm-in-waste-oil-pit-durgapur/) [Case Studies](https://oceangeosynthetics.com/category/case-studies/) [Ocean HDPE Liner 1mm in the Waste Oil Pit Project, Durgapur, West Bengal ](https://oceangeosynthetics.com/ocean-hdpe-liner-1mm-in-waste-oil-pit-durgapur/) Ocean Non Wovens supplied 60,000 Sqm of Ocean HDPE Liner 1mm for the Waste Oil Pit Project in Durgapur, West Bengal. 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