Water absorption (EN ISO 10545-3)
Resistance of the colours to the light (DIN 51094)
Chemical resistance unglazed tiles (EN ISO 10545-13)
Thermal linear expansion coefficient (ISO 10545-8)
Resistancetothermalshock (ISO10545-9)
Frost resistance (UNI EN 202)
TRACTION TEST OF MOSAIC TESSERAE
| 0,2-0,3
| resistant
| resistant
| 8,0-8,4
| resistant
| resistant
|
%
|
⁄
|
⁄
| 10-6x°C-1
|
⁄
|
⁄
Testing was carried out using electronic dynamometer model “TC/1000 Ats Faar”,
with a speed interval of 0,1-500 mm/min, interfaced by a computer.
Loading cell, maximum range 5350 N, definition 2,5 N.
- Detachment from steel support: 13,9 MPa - speed 5 mm/min.
- Breakage of the casted glass: 11,6 MPa - speed 5 mm/min.
ACCELERATED AGEING TEST ON MOSAIC TESSERAE
A) ACCELERATEDAGEINGUV/CONDENSATIONTEST
Test carried out by means of a series of cycles of irradiation
with fluorescent UV Lamps 40 W and condensation over 168 hours.
Mosaic tesserae conditions after the test: No damage
B) BOILINGTEST
Test carried out by immersing the tiles in deionised water for a period of 3 minutes at a
temperature of 60° c, then a 2 hour immersion in boiling water, after cooling the tiles
are examined for separation of the glass layers, bubbles and various other defects.
Mosaic tesserae conditions after the test: No damage
C) THERMALCYCLESTEST
Testingiscarriedout inaclimaticchambertoperformethecycle:
- 4 hours at -20°c
- 4 hours at +80°c
for a total period of 168 hours.
At the end of the test, eventual damage is noted as follows:
glass delamination, bubbles appearance and various other defects.
(Istituto Giordano - Bellaria Rimini - Italy)
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