Evaluation of Diamond Grinding New PCCP Route 60, Butler County
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Evaluation of Diamond Grinding New PCCP Route 60, Butler County

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English
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  • Creators:
    Amos, Dave
  • Corporate Creators:
    Missouri. Dept. of Transportation. Research, Development and Technology Division
  • Corporate Contributors:
    United States. Federal Highway Administration
  • Subject/TRT Terms:
  • Publication/ Report Number:
    RDT00-005
  • Resource Type:
    Research Paper
  • Geographical Coverage:
  • Corporate Publisher:
    Missouri. Dept. of Transportation
  • Abstract:
    Two projects were selected for this investigation to provide a comparison between a diamond ground surface and a standard transverse tined surface. The two projects were located on Route 60, Butler County. The only difference was in the finishing technique: one was transversely tined while the other had a burlap drag finish with diamond grinding taking place within approximately a month of construction. The two projects are being monitored on a yearly basis by means of a visual distress survey, profilograph measurements using the 0.0 blanking band, the Automated Road Analyzer (ARAN) data, falling weight deflectometer (FWD), and friction properties. The initial smoothness of the diamond ground pavement was smoother than the tined pavement with an average profile index of 6.3 inches per mile. The tined sections had an average profile index of 17 .0 inches per mile, while the initial International Roughness Index (lRl) for the diamond ground sections averaged 62.4 and the tined sections averaged 91.8. After 2 years of service, the diamond ground pavement continues to maintain a lower profile index than the conventional tined pavement The profile index after 2 years of service for the diamond ground sections is 6.7 inches per mile compared to 16.5 inches per mile for the tined sections. The diamond ground pavement sustains a higher serviceability rating than the tined, ranks higher in the state percentile, and has a comparable roughness index. Both pavements have favorable friction properties. After two years of service, it can be stated that diamond grinding does produce a quieter and smoother ride than normally transverse tined pavement. This is an initial report containing the initial test data. It should be continued with yearly updates. It is recommended that diamond grinding as a finishing technique be used on other projects in the state for data comparison.
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