20

GOLD & PLATINUM GLASS SANDWICH

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)

G

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