INVESTIGATION OF GEOGRID APERTURE SIZE EFFECTS ON SUBBASE-SUBGRADE STABILIZATION OF ASPHALT PAVEMENTS

SERT T., AKPINAR M. V.

BALTIC JOURNAL OF ROAD AND BRIDGE ENGINEERING, cilt.7, sa.2, ss.160-168, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 7 Sayı: 2
  • Basım Tarihi: 2012
  • Doi Numarası: 10.3846/bjrbe.2012.22
  • Dergi Adı: BALTIC JOURNAL OF ROAD AND BRIDGE ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.160-168
  • Anahtar Kelimeler: large scale pullout test device, geogrid aperture size, wide-width tensile test, asphalt pavements, subbase-subgrade, PULL-OUT TESTS, SCALE, RESISTANCE, FORCE
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

The increased use of geogrids in highway pavement subbase layer reinforcement applications has resulted in a need to better understand the soil-geogrid interface properties for the use in analysis and design. For this purpose, a series of laboratory large scale pullout tests was carried out with three different aperture size geogrid samples randomly sampled from a single manufacturer. It was found that geogrids are unique in their pullout performance within pavement subbase layer structure based on their aperture sizes. Analysis indicates a strong relationship between pullout performance and geogrid aperture size of geogrids at moderate normal stress levels. Such findings aid in selection of appropriate geogrid types for subgrade and subbase interface reinforcement purposes. Further experimental analysis was conducted to investigate the wide-width tensile test performance for the same samples used in the pullout tests in this study.