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Recycling Old PCC Pavement - Performance Evaluation of FAI 57 Inlays
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1993-02-01
[PDF-2.34 MB]
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Abstract:This report details the construction and performance monitoring efforts of two demonstration projects proposed in an experimental features work plan entitled 'Recycling Old PCC Pavement'. The objectives of this experimental feature were to evaluate the viability of recycling old PCC pavements into new inlays and to determine the subsequent performance of the recycled pavements. Two demonstration projects were undertaken to make this evaluation. On one project, an old, badly faulted, jointed reinforced concrete (JRC) pavement containing high quality aggregates was recycled into a new continuously reinforced concrete (CRC) inlay. On the second project, a deteriorated CRC pavement containing D-cracking susceptible aggregates was recycled into a full-depth asphalt concrete (AC) inlay. Inlays were constructed because the existing shoulders were in good condition. Both demonstration projects were constructed in a two-year phase, beginning in 1986. The construction of both projects was monitored. Performance monitoring of the recycled pavement began in 1987, and included friction testing, ride quality testing, visual distress surveys, and deflection testing with a Falling Weight Deflectometer. After five to six years in service, no major maintenance has been required and both pavements are performing well.
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