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B.5.5

Flexibility

Test according to EN ISO 1519

B.6

Density

B.6.1

Sealants, coatings and other paste like materials

Sealants, coatings and other paste like materials may be tested according to the principles of EN ISO 2811-1 (pyknometer). The mean value of 3 specimens and the standard deviation shall be reported. For FPC also EN ISO 2811-2 is a suitable method.

B.6.2

Foams (in-situ, cured condition)

A cardboard beaker (coated with paraffin wax) is filled with the foam (taking care to avoid any holes and cavities). The foam is cut at the edge of the beaker after curing. The specimen shall be kept at ambient temperature. Density = mass total – mass beaker / volume of beaker (kg/m3). The mean value of 3 specimens and the standard deviation shall be reported.

B.6.3

Mineral wool

Test according to EN 1602

B.6.4

Non-compacted bulk density (mortar, filling material for pillows)

Test according to ISO 3049.

B.6.5

Pre-foamed products (e.g. blocks, plugs)

The density is calculated from the weight and the volume of the specimen. The weight of the specimen shall be determined with a balance of an accuracy of 0,1g. The dimensions shall be determined to the nearest mm either using a ruler when the product has a regular shape, or determining the volume by using a water displacement technique.

B.6.6

Boards other than Calcium silicate, Mineral wool and Gypsum based boards

Depending on the type of product the test method shall be determined case by case.

B.7

Viscosity

B.7.1

Liquids with high viscosity

Test according to EN ISO 3219

B.7.2

Liquids with low viscosity

Test according to EN 12092

B.7.3

Uncured sealants

Test according to EN 1426

B.8

“Melting point” of mineral wool

B.8.1

Optical method

A small piece of mineral wool without binder shall be put into a tube furnace at e.g. a temperature of 1000 °C and it shall be checked whether the fibres will melt. The “melting point" is the temperature at which the mineral wool starts to melt.

Test procedure:

Keep the specimen at 550 °C (glass-wool) or at 650 °C (stone wool) to eliminate all organic content. Cut specimens to 10 mm x 10 mm x 10 mm cubes of heat-treated wool.

The dimensions of the inner diameter of the tube oven and of the specimen may be changed provided the ratio is kept constant.

Adjust the tube oven temperature to the desired test temperature. Place a specimen on a pin which is supported outside the tube oven with an inner diameter of 25 mm by a stand, and move the stand slowly into the oven so that the specimen comes close to the temperature sensor in the middle of the oven. Keep the specimen for 10 minutes in that place. Take the specimen out carefully, record the temperature and note whether the specimen has already melted or sintered / shrinked.

If the specimen is unchanged, raise the oven temperature by 10 degrees, wait until the temperature is stabilized and repeat the test with a new specimen.

ETAG 026

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