D6388-18 – Standard Test Method Technical Guide

🧪 Purpose and Scope of ASTM D6388

ASTM D6388-18 is a standard practice specifically designed to evaluate the chemical resistance of geonets—polymeric netting used for drainage in geosynthetic applications. The practice outlines procedures for testing these materials against liquid wastes, prepared chemical solutions, or solid waste leachates. As defined in the standard, the core objective is to measure the changes in mass, dimensions, tensile properties, and hydraulic properties brought about by chemical immersion, thereby assessing how a geonet’s as-manufactured characteristics hold up under potential end-use conditions.

This standard is not a standalone procedure. Section 1.3 explicitly states that it is intended to be used in conjunction with Practice D5322 (Laboratory Immersion) or Practice D5496 (In-Field Immersion). Furthermore, the scope is strictly limited to testing and reporting procedures. Crucially, Section 1.4 places the responsibility of data interpretation squarely on the user, stating that “evaluation or interpretation of test data is beyond the scope of this practice.”

📊 Key Properties and Referenced Test Methods

To provide a comprehensive chemical resistance profile, D6388 integrates a robust suite of ASTM test methods. The table below summarizes the core physical, mechanical, and hydraulic properties evaluated under this practice, directly linked to their standard test methods as cited within D6388.