Her cement-sand analogue was invented in the nineteenth century and gained popularity in the wake of acute post-war shortage of quality materials, thanks to a fairly simple and "short" of its manufacturing process chain.(Production of traditional ceramic tile energy-intensive and takes 2-3 weeks).
In 1953, in Germany, Rudolph BRAAS founded Braas GmbH & amp;Co., with the main factory in the city of Heusenstamm, where in 1954 after the British investment Redland, was implemented an automated production of tiles made of concrete, a capacity of 40 bars per minute.A year later, the performance of a molding machine reached 100 tiles per minute.And new plants were built.In 1955, Braas provided for their products of 30-year-old (!) Guarantee strength and hardiness.In 1963, Braas brand went international, and its presence in Russia began in 1995.
Cement-sand tile Braas
But back to our comparison.The first question that we should find out - is the material base.Raw material for ceramic tile clay is plast
technology and production of the materials is fundamentally different.Traditional ceramic tile made in three stages: preparation of raw material supply, crock molding (stamping techniques or tape) and firing at a temperature of about 1000 ° C.In order to give additional properties can be coated with ceramic glaze glass (the surface of the material at the same time turn out glossy) or engobe (resulting products will be opaque).
This technology, in addition to long-term energy costs, and requires expensive equipment.In the production of cement-sand tile is not firing.Molded from a concrete solution shards are dried at t = 60 ° C, covered by a sealing compound and crystallize naturally for 28 days.Therefore, the main advantage of the cement-sand tiles, as compared to ceramics, it is low (about two times) value.
Now consider the properties of materials, primarily durability.In the cement-sand tiles are given a guarantee of 30 years, and the expected duration of her life is 50-100 years.Ceramic tile is warranted for 30-50 years, and the service life of 100 years or more, which proves the long history of its use.The tiles have been found during excavations of ancient buildings make extensive collections of natural history museums in the world.Moreover, connoisseurs of antiquity, not constrained in for cash, can afford to use vintage ceramic materials for the construction of their new residences.
Such longevity is due to the high flexural strength and tear, low water absorption (1.5-2%) and high resistance to frost.It should be noted that the cement-sand tile, on the above figures, almost as good as ceramic, so it is demanded by the market.Both materials are resistant to solar radiation, aggressive media and eventually to lose appeal.Their significant weight is more dignity, as both ceramic (40-60kg \ m 2), and cement-sand (20-45kg \ m2) roof able to withstand gusts of gale-force wind.Both materials are only afraid of large hail (individual tiles can crack), but it is easily fixable, so removal and installation of tiles is quite simple.
Ceramic tile dials and gives the heat slowly, preventing overheating in the summer and in the winter by holding the heat inside, creates a comfortable environment for living.The same can be said about the concrete tiles.Both materials are quenched by the rain, do not collect static electricity and are fireproof.But water vapor permeability in different materials: cement-sand tile has a dense structure with closed pores, and as a result, weak resistance to mold and mildew.Ceramic tile vapor permeable, so the steam does not accumulate in the form of condensate in the roof space.
The most important benefits of small-piece tile from any source should include its ability to form a solid but flexible roof covering, like the scales of a dragon, allowing stress-free, due to the gaps, to adapt to the inevitable distortion in shrinkage at home and under the weight of snow and conceal some defectsRoof (parallelism sides and rectangular ramp, because of the incorrect form of the cap).
Scope of ceramic and cement-sand tile is almost the same.The material used for construction of brick, stone and wood houses with pitched roofs of various shapes and for their reconstruction.The slope of the roof to the concrete roof tiles must be at least 22 °, and for some models of ceramic tiles can be limiting at least raven16 °.
In conclusion - a few words about aesthetics.The color palette of cement-sand tile is soft natural hues and limited to only those using natural pigments that do not degrade the quality of the material.Her graceful form is less than the range of ceramic tiles, but it is this optimal thickness of the material to achieve the desired strength values.
Of course, such a wealth of colors and shapes that mankind has accumulated, creating different profiles and patterns of ceramic tiles, at the moment inaccessible for the new material.And if a ceramic roof, passing through the "fire, water and copper pipes," confidently led a parade of luxury natural materials, the cement-sand tiles to take strong positions in the budget projects, are ecologically clean.The choice always remains with the buyer!