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Technical features

DEEP ABRASION RESISTANCE
UNI EN ISO 10545-7

Method only applicable to unglazed ceramic tiles. The testing method and the expression of results are the same as those indicated in the previous European Standards (EN 102). Only one modification has been made regarding the material to be used for the calibration of the instrument. The calibration procedure remains unchanged.

 

DETERMINATION OF THE ANTI-SLIP PROPERTIES
DIN 51130, DIN 51097, ASTM C 1028

Identity the “R” index of resistance to slip, depending on the angle of inclination at which a person walking on an inclined plone cannot keep his balance.

DETERMINATION OF RESISTANCE TO STAINS
UNI EN ISO 10545-14

Method applicable to all working surfaces of ceramic tiles to determine their resistance to stains. Each staining agent must remain on at least 5 testing samples, for at least 24 hours, whose working surfaces has been cleaned and dried beforehand. Removal of the staining agents takes place in subsequent steps using various cleaning agents and cleaning procedures.
CLASS 5; the stain is removed using hot water
CLASS 4; the stain is removed using a weak commercial cleaning agent
CLASS 3; the stain is removed using a strong commercial cleaning agent
CLASS 2; the stain is removed using solvent, such as acetone for example
All REFIN products satisfy CLASS 5.

WATER ABSORPTION
UNI EN ISO 10545-3

Absorption is the ceramic product capacity for water penetration. Obviously, this is greatly important for the determination of the product mechanical features. The CEN European Regulations subdivide pressed tiles into five groups according to their absorption percentage: ANNEX G, H, J, K, L.

RESISTANCE TO CHEMICALS
UNI EN ISO 10545-13

Resistance to chemicals is the capacity of the glaze at room temperature to tolerate contact with chemicals (domestic products, staining chemicals,, pool additives, acids and solvents) without alteration in its appearance.

FROST RESISTANCE
UNI EN ISO 10545-12

Frost resistance is a quality tiles have when are subjected to water at temperatures lower than 0°C without being damaged by stress generated by their moisture content freezing. The tiles are defined as resistance or not.

RESISTANCE TO THERMAL SHOCK
UNI EN ISO 10545-9

Resistance to thermal shock is the capacity of a glazed surface not to suffer visible alteration because of the “shock” caused by difference in temperature. The test inolves a number of repeated cycles with the tile immersed in water at room temperature, after which it is placed in an oven at temperature higher than 105°C. On the basis of the test, the tile is defined as resistant or not.

BENDING RESISTANCE
UNI EN ISO 10545-4

Bending resistance is the maximum load applied at three points that the tile can bear without breaking. The level is expressed in N/mm2 and ISO 10545/4 standard defines the following minimum accettable settings:
BIb 35
BIIa 30
BIIb 18

ABRASION RESISTANCE
UNI EN ISO 10545-7

Abrasion resistance is the capacity of the glazed surface to resist the wear caused by foot traffic or the abrasion caused by mechanical equipment (lift trucks, etc.). The wear action is strictly linked the mechanical agent (rubber sole, leather sol, etc.), the material carried on to the surface (water, sand, mud, etc.) and classified in five categories depending on the areas they are be used in:
PEI I Tiles for areas with light traffic and without abrasive dirt, e.g. bathrooms, bedrooms
PEI II Tiles for areas with average traffic and medium to low abrasion, e.g. studyng rooms, living rooms
PEI III Tiles for areas with higt medium to high traffic and average abrasion, e.g. foyer, kitchen in private residances
PEI IV Tiles for areas with intense traffic, e.g. restaurants, offices, shops, public offices (exluding floors under cash desks and shop counters and narrow unavoidable passageways)
PEI V Tiles for areas with especially intense traffic.



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