Improving road rehabilitation and maintenance with geosynthetics and pavement optimization

Improving road rehabilitation and maintenance with geosynthetics and pavement optimizationAuthor: Katerina Selezen
Publication: Ontario Good Roads Association's (OGRA) "The Weekly Detour" - August 3, 2016

With summer in full bloom, contractors are working incessantly to give our infrastructure a much needed makeover. As construction, maintenance and restoration leaves no part of a city untouched, engineers are examining cost-effective and high-quality ways to enhance roadway rehabilitation solutions. Many rely on geosynthetics as an economical, innovative and sustainable means to strengthen and optimize structures, ultimately increasing their lifespan.

Pavement optimization is proving to be the solution to rehabilitation impediments and maintenance needs. Utilizing geosynthetics within a pavement constructed over good or improved soils may mean reducing the asphalt layer thickness by 15 to 30 per cent and/or aggregate layer thickness by 25 to 50 per cent with the potential to improve its performance.

Building a solid foundation

The key to a sturdy, durable and long-lasting structure is a stable foundation. Suitable for projects ranging from low-volume, light-duty rural roads and car parks, to high-volume highways and heavy-duty industrial pavements, geosynthetics are a vital component of the building or rehabilitation process. Conventionally patching up roads may offer a quick fix, but it does not resolve the deeper rooted problem, resulting in a reoccurring need for more maintenance and, thus, costs.

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