CALIFORNIA TEST "QUIET" GRINDING

The Santa Clara Valley Transportation Authority is testing a new method of "microgrinding" to rehabilitate an existing concrete road. The system will grind away irregularities from a 10-mile stretch of pavement in a test of the technique. The grinding is done with parallel saw-wheels that produce "textured" grinding with longitudinally placed diamond blades. They produce a corduroy-like surface with 164-193 grooves per meter across and peaks less than 2 mm from the bottom of the blade grooves. A second grinding with blades 2.41 mm wide and 19 mm apart will follow. A preliminary study showed that over a 35-year lifecycle, grinding saved nearly half the expense of installing asphalt overlay. Grinding reduces spikes of frequencies from traffic above 1,250 hertz, the point when noise becomes an irritant.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08919526
• Corporate Authors:

  McGraw-Hill, Incorporated

  330 West 42nd Street
  New York, NY  United States  10036
• Publication Date: 2005-1-24

Language

• English

Media Info

• Pagination: p. 15
• Serial:
  • ENR
  • Volume: 254
  • Issue Number: 3
  • Publisher: McGraw-Hill, Incorporated
  • ISSN: 0891-9526

Subject/Index Terms

• TRT Terms: Concrete pavements; Grinding; Traffic noise
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00986876
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: BTRIS, TRIS
• Created Date: Mar 2 2005 12:00AM