This standard (Part 6) specifies the laboratory method for determining the water absorption of bitumen-based felts. It outlines the procedure of immersing a sealed-edge specimen in water for 24 hours and calculating the percentage increase in mass, which is a key quality parameter for waterproofing materials.
Bitumen-based felts - Methods of the test, Part 6: Water absorption test
Quick Reference Values
Sample drying temperature105 ± 5 °C
Test specimen area100 cm²
Analytical balance accuracy0.001 g
Key Formulas
Binder Content, % by mass = ((M1 - M2) / M1) * 100
Practical Notes
This is a destructive test primarily used for quality control by manufacturers and for third-party verification.
Ensure adequate ventilation and use appropriate personal protective equipment (PPE) when handling solvents like trichloroethylene.
The accuracy of the result is highly dependent on drying the sample to a constant mass before and after extraction.