Performance of Colorado's First Rubblization Project on I76 Near Sterling

Details

• Creators:
  LaForce, Robert
• Corporate Creators:
  Yeh and Associates, Inc.
• Corporate Contributors:
  Colorado. Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Portland cement concrete
  • Hot mix asphalt
  • Pavement overlays
  • Comminution
  • Pavement performance
  • Edge drains
  • Construction
  • Cracking
  • Rutting
  • Failure
  More +
• Publication/ Report Number:
  CDOT-DTD-R-2005-20
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Colorado
• Edition:
  Final Report
• Corporate Publisher:
  Colorado. Department of Transportation
• Abstract:
  This report documents the six-year performance of the Colorado DOT's first rubblization of PCCP project. The project is located on I 76 near Sterling, Colorado, and was selected to demonstrate the use of the resonant breaker and multi-head hammer methods of rubblization and the performance of the new HMA overlay. Edge drains were also installed and evaluated. Crack and seat technology was also to be constructed, but the equipment was unable to adequately fracture the interlocked reactive aggregate slabs, so the treatment was not used for construction. Findings from this study include the following: - Falling-weight deflectometer data from 2004 shows that the pavement has adequate structure to carry the traffic loading on I 76. -The HMA pavement has no distresses associated with reflective cracking from the old concrete pavement and has not demonstrated any settlement, permanent deformation (rutting), or other distresses as a result of the rubblization processes. - Both rubblization methods appear to have accomplished the required break-up of the old concrete pavement and both methods should be allowed on future projects. - The tightly locked slabs resulting from reactive aggregate problems did not require any special requirements for rubblization. The standard fracturing required for each rubblization method was adequate to prevent damage to the new HMA overlay. -The HMA pavement is performing similar to other newly constructed asphalt pavements and therefore any life cycle calculations should be treated the same as far as rehabilitation cycles or maintenance costs, except construction costs should include the cost of rubblization and the installation of edge drains. Maintenance costs will need to address edge drain maintenance in the future. - The edge drains performed adequately in preventing moisture buildup under the pavement although only small amounts of moisture were encountered. - Rubblization may provide CDOT with a cost competitive tool for the rehabilitation of old concrete pavements.
• Format:
  PDF
• Funding:
  11.16
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93154/dot_93154_DS1.pdf
• File Type:
  [PDF - 4.46 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:325cc8135fc0306d7cfd1b3ae9d5f4fba6db2e92b7859d686e264c1b24e1b82b85be219201d0855b38a49812a5937eaf77bddeed8782c7031c3f3109d4aca68b