1.1 This test method outlines the procedure used to determine the performance of geosynthetic-reinforced, laboratory constructed, pavement cross sections using a stationary, cyclic load applied to the surface to simulate traffic. 1.2 Test section performance from these tests is normally calculated as a function of life extension but can also be determined based on structural improvement. Life extension is related to the number of load cycles that can be accommodated by a particular configuration when compared to a similarly constructed control. Structural improvements are based on elemental or system-wide stiffness increases. 1.3 The cyclic plate load (CPL) test is intended to be a performance test conducted as closely as possible to as-built conditions. It has been used as a tool to compare different geosynthetics; soil types, strengths, and thicknesses; and construction procedures for a variety of pavement applications. 1.4 UnitsThe values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Keywordscyclic plate loading; traffic benefit ratio; TBR; rut; geosynthetics; pavement testing; performance
Although cyclic plate load (CPL) tests are becoming more popular, there is currently no standard for conducting these tests to characterize performance of geosynthetics. This test method will help establish procedures so that CPL tests are done in a proper and unified manner.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top