Unbound aggregate materials are the largest transportation infrastructure asset for most state and local DOTs, yet they are the most vulnerable to premature failure.  Using a nonwoven geotextile provides separation/stabilization to paved and unpaved roads while requiring less aggregate during construction, thus saving an average of $50,000 per lane mile, reducing overall road thickness and doubling the useful life of the road. This Engineering Bulletin addresses the features, advantages and benefits of using nonwoven geotextiles compared to woven geotextiles or geogrids.  You’ll learn how to create a cost-effective Permanent Road Foundation (PRF) using a separation/stabilization nonwoven geotextile, the detrimental effects of subgrade soil contamination within road base layers and how critical friction, durability and hydraulic properties uniquely position nonwoven geotextiles as the preferred geosynthetic to enable a PRF.


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