The Introduction of Perpetual Pavement |
来源:moasphalt.org 发布日期:2006-12-5
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Perpetual Pavement combines the well-documented smoothness and safety advantages of asphalt with an advanced, multi-layer paving design process, that with routine maintenance, extends the useful life of a roadway to half a century or more. Pavements designed and constructed in accordance with the Perpetual Pavement concept will last, and last, and last. How it works Perpetual Pavements use multiple layers of durable asphalt to produce a safe, smooth, long-lasting road. The Hot Mix Asphalt (HMA) design begins with a strong, yet flexible bottom layer that resists tensile strain caused by traffic, and thus stops cracks from forming in the bottom of the pavement. A strong intermediate layer completes the permanent structural portion, and a final layer of rut-resistant HMA yields a surface that lasts many years before scheduled restoration. A Perpetual Pavement provides a durable, safe, smooth, long-lasting roadway without expensive, time-consuming and traffic-disrupting reconstruction or major repair. Major advantages When scheduled surface restoration is performed, Perpetual Pavements can be maintained easily and cost-effectively without removing the road structure for reconstruction, saving time and money while keeping motorists happy. Asphalt is recyclable, providing further cost savings and environmental benefits. Asphalt has a proven safety record as a driving surface, offering stronger visual contrast with center stripes and other markings. Among other advantages can include reduced noise, reduced splash and spray, and greater skid resistance |