The author presents a case study of pavement deterioration. Inadequate pavement section, seepage of water through the base material, and settlement of utility backfill are examined. The primary pavement deficiency was the aggregate base, which in some areas was less than the original pavement recommendations. The compacted clay subgrade became wet as a result of water migration, which led to a corresponding reduction in shear strength. Because of the thin aggregate base, the pavement section could not support the traffic loads, which resulted in alligator cracks, rutting, and sometimes complete disintegration of the pavement. In addition, water was observed flowing through the aggregate base. For inclined pavements with a permeable aggregate base supported by a clay subgrade, theoretical analysis suggests that the majority of water will flow through the base material instead of into the subgrade.


  • English

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  • Accession Number: 00712793
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 29 1995 12:00AM