Apr
27
2015
1
Surface hardness
One of the most important technical characteristics of ceramic facing materials is surface hardness. According to the definition, hardness...
Requirements for the quality of ceramic tiles and control methods are established by technical specification standards. All technical characteristics are established by state, European or international standards and are divided into several groups:
GEOMETRICAL AND SPECIAL: dimensions and appearance ; tsek (hairline cracks in the glaze) .
PHYSICAL: water absorption ; frost resistance ; thermal resistance ; thermal conductivity
MECHANICAL: bending strength ; surface hardness (Mohs) ; wear and deep destruction ; coefficient of linear thermal and humidity expansion ; impact resistance .
CHEMICAL: fire resistance ; stain resistance ; color and light fastness .
SAFETY: Slip resistance ; lead and cadmium content in glaze .
When carrying out ceramic work, it is necessary to know the technical characteristics of the tile for its correct use.
One of the most important technical characteristics of ceramic facing materials is surface hardness. According to the definition, hardness...
The impact resistance or elasticity of a floor covering material is its resistance to breaking along the entire thickness or to breaking off individual parts due to a strong impact.
The metals lead - Pb and cadmium - Cd are sometimes included in the glaze of ceramic tiles and pose a danger to human health.
The thermal conductivity of ceramic tiles usually varies from 0.5 to 0.9 kcal/(m h °C); lower values apply to porous materials (single and double fired tiles, monoporosity).
Thermal resistance is the ability of ceramic tiles to withstand without damage the stress caused by dimensional deformations due to sudden changes in temperature, especially if such changes are repeated frequently.
The term craquelure itself refers to the crevices and cracks that form on the surface of the glaze. The pattern of these cracks is often circular, although they may be scattered across the surface of the glaze.
It is known that prolonged exposure to light leads to changes in many colors, especially ultraviolet radiation.
When it comes to ceramic floor and wall tiles, ease of cleaning is the ease and efficiency of removing dirt, stains, dust and other materials that interact with the surface.