Geosynthetic stabilized flexible pavements

I. L. Al-Qadi, T. L. Brandon, S. A. Bhutta

Research output: Contribution to journalArticlepeer-review


The performance of geosynthetic stabilized flexible pavement systems is under investigation. Laboratory test sections were constructed and dynamically loaded to simulate a typical secondary road. The laboratory study demonstrated that geotextiles offer substantial improvement to the performance of pavements constructed over weak and moderate subgrade. This improvement was attributed to the separation capabilities of the geotextiles and their ability to prevent the development of a transition layer (intermixing layer). To verify the laboratory results, nine instrumented full-scale field test sections were constructed as a part of a secondary road. Three groups, each group consisting of geotextile and geogrid stabilized and non-stabilized test sections, were constructed. The base course thickness varied between the three groups. Monitoring of the field test sections is currently in progress. This paper presents a summary of the laboratory results and describes the construction, monitoring, testing, and preliminary results of the field study. Preliminary field results support the separation mechanism theory and the development of a transition layer when a separator is absent.

Original languageEnglish (US)
Pages (from-to)647-661
Number of pages15
JournalUnknown Journal
StatePublished - Dec 1 1997
Externally publishedYes

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)
  • Materials Science(all)

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