Reinforcements Are on the Way

This article describes some examples of reinforcing materials that are being used for road construction and reconstruction. Geotextiles were first used in the 1950s, and their use is very common today. In a recent project in the Czech Republic, a reinforced wall was built to widen an existing road. The retaining wall was constructed using steel gabions filled with coarse gravel. A geogrid made from interlaced extruded polyethylene terephthalate was used between the gabions to provide soil reinforcement. Geogrids also were used to control differential settlement in the approach embankments of a new bridge in the UK. In another example of road reinforcement, a fiberglass mesh was used to reinforce an asphalt concrete overlay in Louisiana. After two years, the lanes repaved with the mesh were in excellent shape with no visible cracking while a turning lane that did not have the mesh showed significant cracking. A rural road in Germany was repaired using a geotextile grid over a thin asphaltic regulating layer and overlaid with a binder and wearing course. Sixteen years later, the road was inspected and tested. It was found that the section with the asphalt reinforcement had significantly less damage than the adjacent unreinforced sections.

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  • Accession Number: 01010491
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 2 2005 11:58AM