Matching performance requirements to product properties for a new range of geogrid reinforcements

摘要

Geogrid reinforcements are used to reinforce soil structures in a wide range of Civil Engineering applications and an increasing number of environmental protection situations. The performance requirements for these end uses vary greatly from the point of view of national and international material specifications and design code testing methodologies. Thus matching the properties of available products to the various performance requirements proves to be a complex and difficult process for manufacturers and end users alike. In this paper, the performance requirements of various reinforcement applications in civil engineering and environmental protection are shown to be dominated by the nature of the "Operational Environment" and "Actions" to which Geosynthetic Reinforced Soil Structure are subjected. The range of testing required to identify the product properties to match the range of performance requirements is then discussed and the need to correlate these is highlighted. Each stage of the testing and analysis is described and the applicability of the recently developed Isochronous Strain Energy Approach to the analysis, particularly to the comparison of test data from different test methodologies, is demonstrated. On these bases, the process of matching the isothermal load-strain-time behaviour to different end uses of geosynthetic reinforcements in general, and the new range of geogrids in particular, are presented.