On top of the base course is the surface course that typically consists of a mixture of mineral aggregates and bituminous materials (fig. It usually consists of aggregates such as crushed stone, or crushed gravel and sand. The base course is constructed on top of the subbase course, or if no subbase is used, directly on the roadbed soil. A subbase course is constructed on top of the prepared roadbed, and may be omitted if the subgrade soil is of a high quality. Flexible pavements generally consist of a prepared subgrade layer which is the roadbed soil or borrow material compacted to a specified density. The current AASHTO design method has been modified to account for the structural contribution of Tenax integral extruded Geogrids. INTRODUCTION This design guideline advises the design steps of asphalt concrete flexible pavements, utilizing the American Association of State Highway and Transportation Officials (AASHTO) “Guide for Design of Pavement Structures” 1993. 31ĭESIGN OF FLEXIBLE ROAD PAVEMENTS WITH TENAX GEOGRIDS BY THE MEANS OF TENAX TNXROAD SOFTWAREġ.

TNXROAD DESIGN SOFTWARE.25 7.1 Design Example.26 8 REFERENCES. AASHTO DESIGN METHOD FORFLEXIBLE ROADS REINFORCED WITH TENAX GEOGRIDS. EMPIRICAL FULL SCALE TEST: DESIGN CHARTS. DETERMINATION OF THE REQUIRED STRUCTURAL NUMBER. DESIGN OF FLEXIBLE ROAD PAVEMENTS WITH TENAX GEOGRIDSġ.

Flexible pavement design aashto example