Durability assessment of geogrid-reinforced asphalt concrete

Geogrids constructed from high-modulus and high-strength polyoxymethylene fibers were prepared and used to reinforce asphalt concrete. The durability such as plastic flow resistance and crack resistance of the geogrid-reinforced asphalt concrete was investigated in reduced scale using the wheel trac...

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Bibliographic Details
Published in:Geotextiles and geomembranes 1998-10, Vol.16 (5), p.257-271
Main Authors: Komatsu, Tamikuni, Kikuta, Hiroshi, Tuji, Yoshinobu, Muramatsu, Eijiro
Format: Article
Language:English
Subjects:
Cracking, Creep
Durability
Geogrid
Laboratory investigation
Pavements
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Summary:Geogrids constructed from high-modulus and high-strength polyoxymethylene fibers were prepared and used to reinforce asphalt concrete. The durability such as plastic flow resistance and crack resistance of the geogrid-reinforced asphalt concrete was investigated in reduced scale using the wheel tracking test. The geogrid-reinforced asphalt concrete showed remarkable increases in the durability in comparison with the control without geogrids. The behavior of the plastic flow was analyzed on the basis of the general creep model, and the result indicated that the geogrid-reinforcement remarkably increases the viscosity of the asphalt concrete. The crack resistance was closely correlated to the plastic flow resistance. The improvement in durability increased with decreasing geogrid-mesh size and with a strong adhesion to the asphalt concrete. This was because the stress concentration applied by a wheel load was greatly reduced by the high stiffness and small meshes of the thin geogrid inserted in the asphalt concrete.
ISSN:0266-1144
1879-3584
DOI:10.1016/S0266-1144(97)10011-5