Pervious concrete is shown to effectively treat acid mine drainage (AMD) by removing 90-99% of heavy metals but experiences pore clogging during the process.
A study utilized five methods to evaluate the pore characteristics of pervious concrete, finding similar results for pore volume from volumetric and linear-traverse methods, while image analysis yielded 20-30% higher values.
Despite the challenge of pore clogging, pervious concrete demonstrated excellent pore connectivity (95.0 to 99.7%), contributing to its effective hydraulic conductivity.