Standard Test Method for Determining the Aperture Stability Modulus of Geogrids

Importancia y uso:

5.1 The aperture stability modulus is a measure of the in-plane shear modulus, which is a function of other geogrid characteristics, most notably junction stability, flexural rib stiffness, and rib tensile modulus.

5.2 The test data can be used in conjunction with interpretive methods to evaluate the geogrid aperture stability at various traffic loads and base/subgrade conditions.

Note 1: Aperture stability modulus is referenced in the FHWA Geosynthetics Design and Construction Guidelines (2008) as an input parameter for the design of geogrid-reinforced unpaved roads using punched and drawn biaxial geogrids. Geogrids of different manufacturing process and material composition may use this property in calibration and validation of their material within the associated design.

5.3 This test method is not intended for routine acceptance testing of geogrid. This test method should be used to characterize geogrid intended for use in applications in which aperture stability is considered relevant.

Subcomité:

D35.01

Volúmen:

04.13

Número ICS:

59.080.70 (Geotextiles)

Palabras clave:

aperture stability modulus; geogrids; index test; laboratory test;