This article describes a new road surfacing material being developed in Japan. The new surfaces contain rice bran, a waste product from rice that produces a hard granular material when heated with thermosetting resin. By crushing this material, molding it again with more resin and heating it again, a material known as carbonized rice bran ceramic (CRBC) is created. The CRBC can be added to asphalt and aggregate to make a tougher, quieter road surface. The new surfaces can absorb about 25% more noise than aggregate and asphalt roads. The CRBC also has a very small expansion coefficient, which prevents the surface from breaking up. This makes it ideal for areas with significant temperature extremes. The rice bran technology also can act as an electrical conductor, which can help disperse static electricity or allow it to act as part of an electrical circuit.


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  • Accession Number: 00989109
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 23 2005 12:00AM