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Long Term Monitoring of Broken and Seated Pavements

File Language:
English


Details

  • Creators:
  • Corporate Creators:
    University of Cincinnati. Department of Civil and Environmental Engineering
  • Corporate Contributors:
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA/OH-2002/024
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Ohio
  • Edition:
    Final report.
  • Corporate Publisher:
    University of Cincinnati
  • Abstract:
    This report presents details of a study conducted to evaluate the long term performance of asphalt overlays on broken and seated

    (B/S) concrete p avements, us ing field expe riments. Th e primary p urpose o f this study is to evaluate the effectiveness of breaking

    and seating as a reh abilitation strateg y for retarding r eflection crac king in asphalt concrete (AC) overlays on jointed reinforced

    concrete pavements. Test sections were constructed by milling the original AC layer, breaking and seating the concrete slabs and

    constructing new AC overlays. Control sec tions were co nstructed ad jacent to the B /S sections in the same way, but without breaking

    the underlying concrete slabs. The test sections carried a large volume of traffic. The original pavements selected in this study were

    fairly uniform with respect to their structural and surface con ditions. Tw o types of pa vement br eakers were used in this study, na mely

    guillotine and pile hammer. The extent of breaking was closely monitored. The performance of the test sections was monitored for

    a total period of nine years. T he monito ring data includ ed deflectio n measure ments, crack mapping , a paveme nt condition surveys

    and roughness surveys on the original pavement and on the overlay. The results, in general, strongly indicate an improved

    performance of AC ov erlays on bro ken and se ated conc rete pavem ents. The B/S treatment has a significant effect on the structural

    response and behavior of the resulting pavement. Breaking the concrete slabs into smaller pieces resulted in a reduction in the

    flexural strength, an increase in the surface deflection (50% to 100%), and a decrease in AREA and Spreadability (20 to 30%).

    Breaking and seating has been extremely effective in delaying and minimizing reflection cracking. Hence, the breaking and seating

    procedure does indeed result in improved pavement performance. Ultimately, economics and serviceability will govern its use, based

    on the length of time future maintenance and rehabilitation is deferred.

  • Format:
    PDF
  • Funding:
    State Job No. 14670(0)
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:b6b3079b26fa588dc76447d2d57a03410bb7dedfc4a6e708ca2e530c8e377b5f80efff6cd1055f8542cc3bef0c1acc7e7cd8dd8e733d06828965fed33f08d3cc
  • Download URL:
  • File Type:
    Filetype[PDF - 9.46 MB ]
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