Technical characteristics

"Keramika Kanjiža" doo from Kanjiža produces dry pressed floor and wall ceramic tiles (so-called monocuttura and monoporosa), as well as decorative accessories. The floor tiles are frost resistant, suitable for installation outside. Our ceramic tiles, in all their segments, meet the requirements of the harmonized European standard SRPS EN 14411.

Standards

Since December 2005, the standard SRPS EN 14411 applies, published with the permission of the European Committee for Standardization CEN. This standard is an identical international standard EN 14411 which is compulsorily applied in all member states of the European Union. The CE-mark is a symbol of product conformity, developed in accordance with the harmonized standard that meets the important requirements of the Construction Products Directive.

SRPS EN 14411 Ceramic tiles - Definition, classification, characteristics and designation -Defines terms and determines classifications, characteristics and requirements for designation of ceramic tiles with the best commercial quality (first class).

According to the standard, the ceramic tiles are classified into groups according to the manner of production and water absorption.

Classification according to the manner of production:

Group A Extruded ceramic tiles
Group B Dry pressed tiles

Classification according to water absorption:

Ia Water absorption less than 0,5%
Ib Water absorption from 0,5 to 3%
IIa Water absorption from 3 to 6%
IIb Water absorption from 6 to 10%
III Water absorption more than 10%

Classification according to the nature of the visible surface:

Glazed (GL)
Unglazed (UGL)

The products of "Keramika Kanjiža" are divided into the following groups:

Floor tiles Group B Ib
Wall tiles Group B III

Testing methods used for determination of the product characteristics are described in the standards SRPS ISO 10545.

SRPS ISO 10545-1 Sampling and basis for acceptance - This standard determines the number of samples that should be checked from the series and a maximal number of allowed mistakes.

SRPS ISO 10545-2 Determination of dimensions and quality of visible surface - This standard establishes a method for determining the mesurement characteristics (length, width, thickness, flatness of sides, deviation for a right angle, and flatness of the surface) and quality of the surface of ceramic tiles.

SRPS ISO 10545-3 Determination of water absorption, apparent porosity, apparent relative density and bulk density - This testing establishes a method for determination of water absorption and apparent porosity of ceramic tiles. 

SRPS ISO 10545-4 Determination of modulus of rupture and fracture strength - Establishes a testing method for determining the fracture strength. Obtained data indicate the load that the tile can bear. 

SRPS ISO 10545-7 Determination of surface abrasion resistance of glazed tiles -PEI classification - The glaze resistance to surface abrasion is being determined. The procedure is perfomed by rotation of assets for abrasion and assessment of the abrasion effect, by visual comparison of tiles exposed to abrasion and tiles which were not exposed to abrasion. The product assessment is performed from 0 to 5, depending on the speed of rotation tools and occurence of damages (5 is the highest class of resistance of glazed tiles according to the surface abrasion).  

PEI - classification of glazed floor tiles in relation to their abrasion resistance

PEI 0 Glazed tiles in this class are not recommended for application on floors.

PEI 1 Appropriate for covering floor surfaces where people walk only in shoes with soft soles or barefoot, without dirt which scratches the floor surface (for example, residential bathrooms and bedrooms without direct access from outside).

PEI 2 Appropriate for covering floor surfaces where people walk in soft or plain shoes, usually with small quantities of dirt which scratches the surface (for example, rooms and living rooms in houses and apartments, with the exception of the kitchen, the doorway and crowded rooms).

PEI 3 Appropriate for covering floor surfaces where people often walk in plain shoes, with little dirt which scratches the floor (for example, residential kitchens, halls, corridors, balconies, terraces). This does not refer to exceptional footware, for example - studdied boots.

PEI 4 Appropriate for floors with normal movement of people with  slightly more dirt which scratches the floor (for example entrances, public kitches, hotels, exibition and retail space).

PEI 5 Appropriate for floors with constant great natural load and presence of dirt which scratches (for example, public surfaces such as commercial centers, airport interior rooms, hotel lobbies and application in industry). 

This classification is valid for application in usual conditions.

The information about abrasive resistance of floor tiles is indicated under the figures of floor tiles.

 

SRPS ISO 10545-8 Determination of linear thermal expansion - he coefficient of linear thermal expansion is being determined for a range of room temperature up to 100 °C. The value indicates the extent to which the placed tile will expand due to temperature changes. This information should be taken into consideration during the determination of fugue thickness between the tiles.

SRPS ISO 10545-9 Determination of thermal shock resistance - The tiles are exposed to abrupt temperature changes and afterwards the occurence of damages is being checked.

SRPS ISO 10545-10 Determination of moisture expansion - This standard establishes a method for determination of moisture expansion of ceramic tiles. The data help to determine the dimension between tiles.

SRPS ISO 10545-11 Determination of crazing resistance of glazed surfaces - Occurence of cracks on the surface of glazed tiles is performed after treating them with compressed stream at a pressure of 500 kPa and temperature of 159 °C, for two hours in an autoclave.

SRPS ISO 10545-12 Determination of frost resistance - According to this method, the tiles are exposed to freezing and thawing within a temperature range from -5 °C to +5 °C, for at least 100 cycles. This testing simulates the prodcut behavior in external climate conditions.

SRPS ISO 10545-13 Determination of resistance to chemicals - This testing determines the tiles' resistance to the effect of household chemicals, salts in the water of a swimming-pool, acid, base and resistance to the effect of a 'pencil with HB hardness'.   Depending on the type of chemicals and resistance of tiles, they are divided in the following classes:

Household chemicals and salts in the water of a swimming-pool
GA with no visible effects
GB small changes in the appearance or if the tiles did not pass the testing with a 'pencil with HB hardness'
GC siginificant changes

Acids and bases (low concentrations)
GLA with no visible effects
GLB small changes in the appearance or if the tiles did not pass the testing with a 'pencil with HB hardness'
GLC siginificant changes

Acids and bases (high concentrations)
GHA with no visible effects
GHB small changes in the appearance or if the tiles did not pass the testing with a 'pencil with HB hardness'
GHC siginificant changes

SRPS ISO 10545-14 Determination of stain resistance - The visible surface of the tiles is exposed to contact with assets that create stains, and classification is performed after removal. The classification is performed from 5 to 1 depending on the ease of removing the stains, whereupon the stains are most easily removed at class 5.

 

DIN 51130:2004-06 Determination of anti-slip properties for floor tiles

For bigger floor surfaces, industrial and commercial purposes, it is desirable that the friction coefficient is higher than the one used in houses.

The German standard DIN 51130:2004-06 defines the procedure and serves for testing and classification of anti-slip properties of floor coverings which have been stipulated for use in working rooms and areas where danger of slipping exists. The accepted angle is determined on a floor coating with applied lubricated asset (oil) and the person who performs control with control shoes moves forward-backward on the floor coating which is being controlled and which starts to tilt from its horizontal state and the inclination increases up to an accepted angle, i.e. an angle when the controller reaches the boundary of safe walking. The accepted angle is used for assessment of the degree of slip resistance.

ACCEPTED ANGLE: SLIP RESISTANCE CLASS: RECOMMENDED IN:
6° do 10° R 9 House entrances...
Above 10° to 19° R 10 Shops, workshops...
Above 19° to 27° R 11 Kitchens, laundry rooms...
Above 27° to 35° R 12 Great kitchens, dairies...
Above 35° R 13 Areas with special requirements

DIN 51097:02.80 Determination of characteristics for prevention of slips

The characteristics of floor coatings according to this standard are assessed in conditions of moisture, on the treads of floor coverings which are used in bathrooms, changing rooms, toilets and similar rooms.

During the execution of the procedure, a liquid is continuously and uniformly applied for testing the floor covering which will start to tilt from its horizontal position and the inclination will grow up to an accepted angle, i.e. an angle when the controller reaches the boundary of safe walking. The person who performs control moves forward-backward on the floor coating which is being controlled, barefoot. Depending on the achieved inclination angle, the tested coverings could be classified in the following groups:

MEAN VALUE OF ANGLE INCLINATION: SLIP RESISTANCE CLASS: RECOMMENDED IN:
≥ 12° A Bathrooms
≥ 18° B Changing rooms, toilet...
≥ 24° C Areas with special requirements

The information about slip resistance of floor tiles is indicated under the figures of floor tiles.

SRPS U.F2.011 Finishing works in structural engineering - Execution of ceramic works - The standard determines a procedure for wall and floor cladding with ceramic tiles inside of premises, as well as outside.

Recommendations during installation

  • Before installing the wall tiles, they need to be immersed in water for better adhesion with the substrate.
  • According to the standard SRPS U.F2.011, the tiles must compulsorily be placed with a fugue. The minimal fugue for wall tiles is 3 mm, and for floor tiles it is 4 mm.
  • The substrate for placing the tiles should be dry (not freshly plastered) and without structural cracks.
  • When buying the tiles, you must compulsorily pay attention to the designation of the caliber and the shade. Tiles with the same designations of caliber and shade should be put exceptionally in the same room.
  • For a rustic type of tiles, the difference in the shade is a characteristic. Before placing the tiles, it is recommendable to match few m2 by combining the shades according to the taste of the customer.
  • When laying tiles with offset, the recommendation is that maximum offset is 1/3rd of a tile (33%). Offset 50% is not recommended.

Identification of products on boxes and on pallets

In the process of automatic packaging, the ceramic tiles are packed in a cardboard boxes in which the industrial printer prints the basic data for identifying the product.

The first printed line contains: date, identification number of the classifier and product name. The second printed line contains: number of work order and product code, product class, product shade and caliber, that is, dimension of the floor tiles.

Each pallete of finished product contains a barcode, which helps to identify the tiles.

FLOOR TILES - MONOCOTTURA
SRPS EN 14411, group B Ia

Property Testing method Tolerance
SRPS EN 14411 KK
Length and width SRPS ISO 10545-2 ± 0,5 % ± 0,3 %
Thickness SRPS ISO 10545-2 ± 5,0 % ± 2,5 %
Deviation from a right angle SRPS ISO 10545-2 ± 0,5 % ± 0,3 %
Flatness of the sides SRPS ISO 10545-2 ± 0,5 % ± 0,2 %
Flatness of the surface SRPS ISO 10545-2 ± 0,5 % + 0,2 / - 0.1 %
Quality of the surface SRPS ISO 10545-2 min 95% no visible damage
Water absorption SRPS ISO 10545-3 < 0,5 % < 0,3 %
Breaking strength SRPS ISO 10545-4 > 1300 N > 1600 N
Modulus of rupture SRPS ISO 10545-4 ≥ 35 N/mm2 > 40 N/mm2
Abrasion resistance SRPS ISO 10545-7 abrasion class is declared for each product
Coefficient of linear thermal expansion SRPS ISO 10545-8 Testing method exists 7×10-6 K-1
Thermal shock resistance SRPS ISO 10545-9 Testing method exists Corresponds
Crazing resistance SRPS ISO 10545-11 Required Corresponds
Frost resistance SRPS ISO 10545-12 Required Corresponds
Resistance to household chemicals SRPS ISO 10545-13 At least GB GA
Stain resistance SRPS ISO 10545-14 At least class 3 Class 5

WALL TILES - MONOPOROSA
SRPS EN 14411, group B III

Property Testing method Tolerance
SRPS EN 14411 KK
Length and width SRPS ISO 10545-2 ± 0,5 % ± 0,3 %
Thickness SRPS ISO 10545-2 ± 10,0 % ± 2,5 %
Deviation from a right angle SRPS ISO 10545-2 ± 0,5 % ± 0,3 %
Flatness of the sides SRPS ISO 10545-2 ± 0,3 % ± 0,2 %
Flatness of the surface SRPS ISO 10545-2 + 0,5 %/- 0,3 % + 0,25 % /- 0,1 %
Water absorption SRPS ISO 10545-3 > 10,00 % > 14,00 %
Breaking strength SRPS ISO 10545-4 > 600 N > 600 N
Modulus of rupture SRPS ISO 10545-4 > 12 N/mm2 > 15 N/mm2
Coefficient of linear thermal expansion SRPS ISO 10545-8 Testing method exists 7×10-6 K-1
Thermal shock resistance SRPS ISO 10545-9 Testing method exists Corresponds
Crazing resistance SRPS ISO 10545-11 Required Corresponds
Resistance to household chemicals SRPS ISO 10545-13 At least GB GA
Stain resistance SRPS ISO 10545-14 At least class 3 Class 5

Specification of tiles packaging and decorative accessories

FLOOR TILES GROUP B Ib

FLOOR TILES PACKAGING Number Format Thickness of tiles (mm) Pieces of tiles per box m²/box Gross mass of the box (kg) Boxes per pallet m²/pal. Gross mass of a pallet (kg)
  1 33x33 8,0 9 1,08 16,55 64 62,72 1085,0
  2 45x45 8,5 5 1,01 18,33 36 36,36 685,0
  3 30x60 9,0 6 1,08 20,71 40 43,20 855,0
  4 15x60 9,0 11 0,99 18,98 56 55,44 1090,0
  5 20x80 9,5 6 0,96 19,43 54 51,84 1075,0
  6 60x60 9,5 3 1,08 21,86 40 43,20 900,0

WALL TILES GROUP B III

WALL TILES PACKAGING Number Format Thickness of tiles (mm) Pieces of tiles per box m²/box Gross mass of the box (kg) Boxes per pallet m²/pal. Gross mass of a pallet (kg)
  1 25x40 7,4 16 1,6 20,3 48 76,80 1000,0
  2 25x50 9,2 13 1,62 25,80 36 58,32 950,0
  3 20x60 9,2 13 1,56 24,77 44 68,64 1115,0

DECORATIVE ACCESSORIES

CENTRAL DECOR AND MOSAIC PACKAGING Number Format Pieces per box Gross mass of the box (kg) Boxes per pallet Gross mass of a pallet (kg)
  1 2525M003 8 7,153 72 515,0
  2 2540C 14  17,750 45 800,0
  3 2550C 12  24,198 30 750,0
  4 5050 6 24,198 30 750,0
  5 2060C 12 22,000 32 704,0±10%
PACKAGING OF WALL BORDERS Number Format Pieces per box Gross mass of the box (kg) Boxes per pallet Gross mass of a pallet (kg)
  1 325L 42 4,879 88 450,0
  2 325L 56 6,465 77 520,0
  3 425L 28 4,732 88 440,0
  4 525L 28 5,301 77 430,0
  5 540L 28 7,693 56 450,0
  6 625L 28 6,558 77 525,0
  7 640L 28 9,821 56 570,0
  8 725L 14 4,058 88 380,0
  9 740L 14 5,544 56 330,0
  10 825L 14 4,665 88 430,0
  11 450L 22 7,281 60 460,0
  12 550L 11 4,497 60 290,0
  13 650L 11 5,327 60 340,0
  14 750L 11 6,544 60 415,0
  15 850L 11 7,242 60 455,0
  16 560L 11 5,4 48 259,0±10%
  17 660L 11 6,5 48 312,0±10%
  18 760L 11 7,9 48 380,0±10%
  19 860L 11 8,8 48 422,0±10%
 
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