Standard Test Method for Hydraulic Pullout Resistance of a Geomembrane with Locking Extensions Embedded in Concrete

This document outlines a standardized procedure for evaluating the hydraulic pull-out resistance of geosynthetic liners featuring embedded concrete locking extensions. The test method is designed to measure the frictional interaction between the geosynthetic interface and the surrounding soil or concrete matrix under hydraulic loading conditions. It provides a systematic approach for preparing test specimens, applying axial loads, and recording displacement data to determine the maximum resistance developed during the pull-out process. The procedure includes specific guidelines for sample conditioning, loading rates, and data interpretation to ensure consistency across different testing facilities. By following these protocols, engineers and researchers can reliably assess the stability of composite liner systems used in containment applications. The method addresses various failure modes and offers a clear framework for comparing the performance of different liner configurations. It is particularly useful for verifying the integrity of liners where concrete anchors are employed to enhance mechanical bonding. This approach supports quality control and design validation in geotechnical engineering projects involving hydraulic containment structures.