PD CEN/TS 16637-3:2016 PDF

What is PD CEN/TS 16637-3 - Up-flow percolation test of construction products about?

PD CEN/TS 16637 is a series of international standards on construction products performing percolation tests that may be suitable for the prediction of chemical leaching from soil and soil materials. PD CEN/TS 16637-3 is the third part of the PD CEN/TS 16637 series of documents that specifies an Up-flow Percolation Test (PT) which is applicable to determine the leaching behaviour of inorganic and non-volatile organic substances from granular construction products. The construction products are subjected to percolation with water as a function of liquid to solid ratio under specified percolation conditions. The method is a once-through column leaching test. This test method produces eluates, which can subsequently be characterized by physical, chemical and ecotoxicological methods according to existing standard methods. The results of eluate analysis are presented as a function of the liquid/solid ratio. The test results enable the distinction between different leaching behaviour. Construction products that exhibit a saturated hydraulic conductivity of about 10−8 m/s or higher can usually be subjected to this test. This procedure is also applicable to materials showing solidification in the column if the final hydraulic conductivity is within the specified range. Inert granular material should not be added to improve permeability in order to enable their testing.