ISO 3867:2017 pdf free.Composition cork—Expansion joint fillers—Test methods.
4 Apparatus
4.1 Balance, with resolution of 0,01 g.
4.2 Vernier gauge, with resolution of 0,1 mm.
4.3 Compression testing machine, with one fixed jaw and one mobile jaw which shall move unloaded at a speed of 1,3 mm/min, and having enough capacity to reduce the test specimen to 50 % of its initial thickness.
4.4 Load recorder, to indicate the load with a readability of I %.
4.5 Three-sided extrusion mould, to confine the lateral movement of test specimens under
compression to one side only. The mould shall have internal dimensions equal to (100 ± 0,5) mm
(100 ± 05) mm and sides of such height as to extend at least 13 mm above the test specimens.
4.6 Steel template, measuring 100 mm x 100 mm, so that it fits the extrusion mould to within 0,13 mm in length and width, equipped with a dial comparator.
4.7 Dial gauge, with a resolution of’ 0,02 mm.
4.8 Metal plate, measuring (100 ± 2,5) mm x (100 ± 25) mm x 6 mm, with rectified parallel faces.
4.9 Cutting system.
4.10 Climatic chamber.
5 Sampling and preparation of test specimens
5.1 Sampling
5.1.1 The sample taken shall be approximately 0,2 m2 from each lot of 100 m2 and shall consist of sufficient material to provide at least five test specimens measuring 100 mm x 100 mm. Each test specimen shall be squarely cut using the cutting system (4.9).
5.1.2 The test specimens from self-expanding agglomerated cork (joint filler) shall be properly banded and wrapped in plastic at the factory immediately after cutting.
Samples shall be packaged for safe transportation to the testing laboratory so that there is no distortion or fissure of the material.
5.2 Preparation of test specimens
5.2.1 If necessary, squarely cut the test specimens immediately before testing so that the test specimens measure 100 mm x 100 mm. Each test specimen shall be cut using a metal plate (4) as cutting system.
5.2.2 The test specimens of self-expanding agglomerated cork shall be dried for 24 h at ambient air after boiling the test specimens (see 6.2.1). Then cut the samples to the dimensions indicated in 5L1.
6 Tests
6.1 Determination of dimensions
6.1.1 Determination of thickness
Determine the thickness in accordance with ISO 7322:2014, 6.1.
6.1.2 Determination of length and width
Determine the length and width in accordance with ISO 7322:2014, 6.2.1.
6.2 Expansion in water
6.2.1 Procedure
For self-expanding agglomerated cork, use the five test specimens delivered by the manufacturer, as described in 5.1.2.
Determine the thickness (di) of one test specimen, as described in J.. Immerse the test specimen in boiling water for 1 h. Remove the test specimen and allow to cool at room temperature for 15 mm. Measure the final thickness to the nearest 0,1 mm.
6.3 Recovery
6.3.1 Procedure
Place on the testing machine one test specimen prepared, as described in 5.2. Give the test specimen
a single application of a load sufficient to reduce its thickness to 50 % of its initial thickness. Apply
the load without shock and at such a rate that the test specimen is compressed approximately at
1,3 mm/mm. Record this applied load (F).
Immediately release the load and allow the test specimen to recover for 10 mm. Measure the new thickness (d2), rounded to the nearest 0,1 N.
6.3.3 Retest provision
6.3.3.1 The test specimen shall meet the requirements specihed in ISU 3b9:Zu17, 4.4. lithe test specimen fails to comply with the requirements of the specification, test a new specimen in accordance with the following procedure.
6.3.3.2 Give the test specimen three applications of a load sufficient to reduce its thickness to 50 % of its initial thickness. Apply the load without shock and at such a rate that the test specimen is compressed approximately at 1,3 mm/mm.
6.3.3.3 After the first and the second applications, release immediately the load and allow the test specimen to recover for 30 mm before the load is applied again.
6.3.3.4 After the third application, release immediately the load and allow the test specimen to recover for 1 h; then measure the thickness again (d3).ISO 3867 pdf download.