Energy-use considerations when building roads

10/17/2011 | National Geographic News

Paving technology has advanced over the years, with greener concrete and a variety of asphalt mixes among the innovations, and researchers are still looking at ways to reduce the energy needed to create the materials used to build roads and bridges. This article explores a variety of techniques, outlines the benefits of each and points out that life-cycle analysis as well as maintenance costs need to be factored into decisions about which paving technique to use.

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