D35 on Geocomposite Long-Term Drainage Efficiency

ASTM Committee D35 on Geosynthetics has announced work item WK36298, “New Test Method for Long Term Efficiency of Drainage Geocomposites.” The work item’s scope notes that it is intended to determine the potential loss of efficiency caused by biological or chemical growth which can develop in a drainage geocomposite; and to obtain an indication that both the filter and the core of a drainage geocomposite will remain functional over an extended period of time. Proof of leachate collection layer performance is key to the work item.