Friday, June 22, 2007

Materials and Construction for Earth and Water

The intrusion of unwanted water into pavement through surface cracks is the major source of deterioration in paved roadways. When constructing or repaving highways, roads, airport runways, and parking areas, the inclusion of a paving fabric between the tack coat and the new asphalt layer produces an effective moisture barrier. This protects the sub-base from deterioration by penetration of surface water, and increases pavement life by retarding reflective cracking.

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