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Four ways to improve your next roadwork project by choosing geosynthetics over aggregates

geosynthetics_roadworks

Geosynthetics offer a host of performance, sustainability and cost advantages versus conventional aggregates when it comes to road construction

Our new white paper on the use of geosynthetics in roadworks, launched at the 79th Annual Session of Indian Road Congress, includes real-life applications of geosynthetics and their advantages over conventional aggregates. Here we present the top four reasons to choose geosynthetics.

With their myriad of uses and low carbon footprint, geosynthetics have become a popular choice in contemporary construction. As durable reinforcing materials, they can overcome issues associated with conventional aggregates, while offering improved performance, reduced costs and a lower environmental impact.

Our top four ways to improve performance and sustainability with geosynthetics:

1. Filtration

A wide variety of geotextiles are now being used in permanent filter applications thanks to the significant cost benefits related to purchase, transportation and installation. Compared to aggregates, geotextiles can be manufactured to strict specifications, offering more consistency when it comes to installation. Their durability also makes them less susceptible to separation during handling and placement, which is a common issue with granular materials.

2. Pavement stabilisation

The emissions generated through the extraction, transportation and production of aggregates is having a significant impact on the environment. When it comes to pavement stabilisation, construction companies are now opting for a more sustainable choice by using geotextiles, geogrids and geocomposites. Their high tensile strength means they are more durable, especially at lower thicknesses, and they have a higher ultraviolet resistance. They are also easier to transport, install and service.

3. Drainage

Conventional drainage solutions, such as stones and boulders, are expensive to install and can get clogged over time, decreasing their effectiveness. With geocomposites, construction companies now have a more cost-effective solution for both horizontal and trench drains. Geocomposites allow for a much thinner drainage layer, with no compromise on drainage performance, and a significantly reduced installation time. They can also perform both the drainage and filtration functions in roadworks projects.

4. Asphalt layers

As aggregate sources are depleted over time, geosynthetics are becoming a more sustainable, low-cost and environmentally friendly option for asphalt reinforcement. The addition of geogrids to a road’s wearing course can help to reduce the thickness of the load-bearing layer, while providing extra reinforcement, leading to a longer road life.

Download our new white paper here.

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