The passing level of the test has been passed. Congratulations.
The result obtained indicates excellent knowledge of the technical characteristics of ceramic tiles. But still read articles on incorrectly answered questions.
You scored 47 out of 50 possible points.
Your result: 94%
Question 1
Unglazed tiles consist of one layer - a ceramic shard. The color is obtained from the raw material or is colored by metal oxides throughout the tile body (tile). The surface can remain untreated (natural) or be processed, taking on various surfaces: polished, honed, rusticated, structured, etc. Unglazed tiles include:
Your Answer Option Right? Result
Cotto (terracotta)
1 Majolica
0 Clinker
1 Cottoforte
0 Extruded gres
1 Gres red
1 Gres Porcellanato (ceramic granite)
1
Information on this issue is presented in the article Unglazed tiles .
Question 2
The existence of ceramic slabs with different types of surfaces is the result of successful experiments by manufacturers. The most popular of them can be considered surface polishing (with its variations). Select the correct definitions or statements.
Your Answer Option Right? Result
The tile that comes out of the kiln and is not subjected to additional mechanical treatment after firing has a matte surface.
1 Tiles with a matte surface are not only the most affordable, since they do not require additional processing, but also the most durable.
1 When exposed to water, polished tiles become very slippery.
1 When polishing, the topmost “sintered” layer is cut off. As a result, polished porcelain stoneware is slightly inferior to matte in terms of performance characteristics, in particular, wear resistance.
1 To obtain polished tiles, their surface is polished with special diamond nozzles using a large number of chemicals.
0 A matte surface is more slippery than, for example, polished or glazed.
0 Polished porcelain tiles are less slippery than polished ones, but due to the smooth surface of such tiles, they are easy to clean.
1 Polished Surface - The surface of glazed or unglazed ceramic tiles and slabs that is polished at the final stage of manufacture to impart shine.
1 A polished surface is obtained by special matte polishing.
1
Material on this issue is presented in the article Porcelain tiles - many faces and diversity .
Question 3
Ceramic tiles and slabs are used mainly for flooring and wall cladding. As a rule, they are molded at room temperature using the extrusion method (method A) or the semi-dry pressing method (method B). Indicate what types of ceramic tiles are molded using the semi-dry pressing method (method B).
Your Answer Option Right? Result
Porcelain tiles
1 Cottoforte
0 Majolica
1 Cotto (terracotta)
0 Gres red
1 Clinker
0
Information on this issue can be found on the forum Classification of tiles and area of use .
Question 4
Glazed ceramic tiles can be used to cover walls and floors. Which of the following statements regarding glaze are true?
Your Answer Option Right? Result
The fragility of the adhesion of the glaze to the shard is expressed in the formation of a network of cracks in the glaze layer (cek) or the detachment of the glaze from the shard after firing and cooling.
1 Transparent glazes are also called enamels.
0 Transparent glazes are colorless and colored.
1 Tsek is a type of glaze defect. This occurs due to the difference in the expansion coefficients of the shard and the glaze itself. The center has the appearance of web-like cracks.
1 Glaze is a shiny or enamel glassy layer in the form of a thin film (1 - 3 mm).
0 Frit is a special type of glass that, during the firing of the tile, melts and adheres tightly to the shard.
1 The chemical composition of the glaze and the ceramic shard is different. Their thermal expansion also varies in size.
1 Glaze, consisting of frits only, is used only to achieve a shiny surface on some types of wall tiles.
1
Material on this issue is in the article Glaze general concepts and classification .
Question 5
Ceramic tiles and rectangular slabs come in a range of sizes. The names of these sizes and definitions are given below. Which pairs - term and definition - correspond to reality?
Your Answer Option Right? Result
Modular size - Dimensions of ceramic tiles and slabs determined on the basis of module M, as well as their multiple and divisible, with the exception of tiles and slabs with a front surface area of less than 9000 mm2.
NOTE See ISO 1006, where 1M = 100 mm.
1 Coordination size (C) - Technological size, including the width of the seam.
1 The dimensions of tiles and slabs of other shapes are determined by the largest size of the rectangle in which they are inscribed
0 Technological size (W) - A size established for the manufacturing process of ceramic tiles and slabs, which must correspond to the actual size within acceptable deviations.
1 Nominal size - Size used to designate a product.
1 Non-modular dimensions - Dimensions that do not take into account the modular (M) structure.
NOTE See ISO 1006, where 1M = 100 mm.
1 Actual size - The size obtained by measuring the surface of ceramic tiles and slabs in accordance with EN ISO 10545-2.
1
Material on this issue is set out in standard EN 14411 .
