The benefits of measuring pore size distribution (PSD) with the use of a capillary flow porometry

摘要

An ASTM D35 Committee Workshop on Pore Size Distribution was conducted on Jan. 30, 2013, in Jacksonville, Fla. The current industry standard for measuring a geotextile's particle retention characteristics—ASTM D4751, Test Method for Determining Apparent Opening Size of a Geotextile (AOS)—shows one attribute for the potential filtration capability in a geotextile but does not accurately characterize the pore spaces. The workshop demonstrated a superior method for determining the pore size of a geotextile: ASTM D6767, Test Method for Pore Size Characteristics of Geotextiles by Capillary Flow Test. This method can provide the data needed to select the correct geotextile to meet filtration and soil requirements.