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.
PD CEN/TS 16637-3 on construction products is useful for:
Percolation test (PT) is a column test release test method to determine the release of substances from a granular construction product packed in a column with a leachant percolating through it.
PD CEN/TS 16637-3 provides the requirements on reagents, materials and equipment used for the test method.
The preparation of the test sample from the laboratory sample and test procedure are specified in PD CEN/TS 16637-3.
PD CEN/TS 16637-3 determines the collection of eluates and further preparation of the eluates for analysis.
Evaluation of measurement results and the analysis of the eluates produced by the leaching test are outlined in PD CEN/TS 16637-3 as well as the documentation and test report.
Moreover, PD CEN/TS 16637-3 assist you in the evaluation of the leaching behaviour of hazardous substances from construction products which is very important for an accurate assessment of the risk of contaminated soils transferring pollutants into seepage water, groundwater, or surface water.
As a result, you can develop construction materials that will not have adverse effects on human health and the environment.
CEN/TS 16637-3:2016