What is colored cement tile? What does colored cement tile mean?

What is colored cement tile? What does colored cement tile mean? Colored concrete tile, also called colored cement tile, colored cement tile, etc. The colored tiles mentioned in the market generally refer to colored cement tiles. It is a new building material for roof decoration that has appeared in recent years. Colored tiles are made of cement, sand, etc. It is made by die and high pressure pressing, and has the advantages of high compressive strength and high bearing capacity. 1 Colored tiles are colored concrete tiles, also called colored cement tiles and cement colored tiles. The colored tiles mentioned in the market generally refer to colored cement tiles. It is a new building material for roof decoration that has appeared in recent years. Colored tiles are made of cement, sand, etc. It is made by die and high pressure pressing, and has the advantages of high compressive strength and high bearing capacity. The relevant national standard is JC/T746-2007. Compared with ordinary kiln-fired tiles, colored concrete tiles have the advantages of strong impermeability, strong bearing capacity and low water absorption. Product classification is divided into concrete roof tile (main tile) and concrete joint tile (joint tile) according to the laying position of tile. Roof tiles with rib grooves are divided according to the overlapping mode of tiles: the sides of the front and back of the tiles are provided with embedded rib grooves; There may or may not be mosaic overlap at the top. Roof tile without rib groove: Generally, the tile surface is flat, arched horizontally or vertically, and the leading edge is regular or irregular. According to color, there are plain tiles and colored tiles, and colored tiles can be divided into face color and sports color. 3 Scope of application. 1) It is mainly used for multi-storey and low-rise buildings, and villas are more suitable. 2) It is suitable for roof waterproofing with waterproof grade II (one to two waterproof fortification plus waterproof cushion), III (one waterproof fortification plus waterproof cushion) and IV (one waterproof fortification without waterproof cushion). Laying waterproof cushion under the waterproof layer can also be used as a waterproof layer to protect the roof and prolong the service life. Waterproof coating should not be used as waterproof layer or waterproof cushion. 4 Selection Points. 1) The main technical indexes to be considered in selecting concrete tiles are bearing capacity, water absorption, frost resistance and impermeability. 2) Products with low water absorption should be selected in cold areas. 3) The drainage slope of sintered tile roof should be determined according to factors such as roof truss form, roof base class, waterproof structure form, material properties and local climate conditions, and it should generally be 30% or higher after technical and economic comparison. 4) According to the roof slope, building height and wind load, corresponding fastening requirements should be adopted for ceramic tiles. 5) When thermal insulation materials with tile hanging function are used on the roof, there should be waterproof cushion under the thermal insulation layer. 6) If the auxiliary brick adopts mortar horizontal brick, other fixing measures shall be attached. 7) For details, please refer to GB50207-2002 Code for Quality Acceptance of Roofing Engineering and J202- 1 ~ 2 of the national architectural standard design atlas. The roof system of a house can be roughly divided into two systems: sloping roof and flat roof. The history of sloping roof system can be traced back to ancient times. From the recorded history of our country to the late Qing Dynasty, almost all buildings were sloping roofs. The same is true abroad, but it is more distinctive and diverse, such as various pointed roofs and spherical roofs. The flat roof system actually evolved from the ancient castle structure. With the development of modern concrete components, it has been widely used in many high-rise buildings. After World War II, many countries built a large number of flat-topped residential buildings in cities to meet the needs of rapid reconstruction. Almost all urban houses in China have adopted the flat roof system, but problems such as basically the same appearance, water leakage and seepage on the roof were soon discovered. So a large number of houses with sloping roofs reappeared, and the cost did not increase much, but it solved the problems of Leng Xia heat and water leakage in the flat top floor in winter. The reason why the sloping roof is leak-proof is that the slope of the sloping roof is greater than 15 degrees. Compared with flat roofs, "drainage" is more important than "prevention" and "guidance" is more important than "blocking", so the roof will not accumulate water and naturally it will not leak easily. In addition, the sloping roof generally uses tiles as waterproof layer, and the tiles are small, overlapping up and down and left and right, forming a complete sloping roof. Hot and cold alternate in spring, summer, autumn and winter, the tiles expand freely when heated and contract when cooled, and the waterproof layer is not easy to be damaged. The existence of the sloping roof also plays an isolation role from the room below, so the room below can be insulated without taking other measures. Because the design and construction of sloping roof can be varied and colorful, the house is beautiful, more personalized and the city is beautiful. Many old flat top floors have also been transformed into sloping roofs, and the sloping roof system has become the mainstream of residential buildings in China. The main materials of sloping roofs are various: wood boards, bark, bamboo strips, thatch, straw and even stone chips. However, these materials have poor waterproof performance and short service life. Only after the appearance of artificially fired clay tiles can it be considered as a real roofing material. The so-called "Qin Brick Han Wa" refers to the clay tile that appeared in China more than 2,000 years ago. This kind of ceramic tile is arc-shaped, made of clay and sintered at high temperature. It is dark gray, and rows of tiles overlap each other when covered, and the tiles are fish-scale-shaped. This kind of tile is very small and thin, and it breaks easily. Now, except for some buildings that imitate the Ming and Qing dynasties in the city, it is rare. In modern times, a kind of clay tile formed by mechanical pressing appeared, commonly known as "earth tile", which refers to the tile made of clay imported from the west. This kind of ceramic tile must also be sintered at high temperature, with a large area of about 14- 15 pieces/square meter, and the colors are black gray and earth red. Because of high temperature sintering, the deformation is large, the roof flatness is poor, and the red clay tile is easy to turn black in a short time, which is very unsightly and also belongs to the national prohibition range. Glazed tiles with a long history are also made of clay, coated with a layer of colored glaze and sintered at high temperature. Because of a layer of glaze, the appearance is much brighter and more beautiful than that of clay tiles. Of course, the price is much higher and there are many shapes. Traditional cylindrical glazed tiles are mostly used in ancient palaces, temples and other aristocratic buildings. This kind of glazed tile is rarely used in cities, but it is widely used in rural areas in the south of the Yangtze River. There is also a color wavelet porcelain tile with mortar veneer on the cast-in-place roof. It was popular for a while a few years ago, but it's gone now. The reason is that veneered porcelain bricks are easy to peel off under the change of temperature in four seasons. In recent years, a kind of so-called clay brick has appeared, which is characterized by using clay but not glazing the surface, adding pigment into the clay and sintering at high temperature. Compared with glazed tiles, this kind of pottery tile is more elegant in color, close to colored cement tiles, and has no "light pollution", but it is not as clean as glazed tiles and is easy to be polluted and blackened. To sum up, whether it is clay tile, glazed tile or clay tile, there is a common feature, that is, high temperature sintering. After high temperature baking, deformation and microcracks will inevitably occur. Deformation will cause the covered tiles to be less flat and beautiful, and tiny cracks will gradually expand and lead to water seepage. As we all know, even the smallest cracks can easily penetrate into water. When the temperature is low in winter, the water seeping into the cracks will freeze and expand, and repeated cracking will enlarge the cracks, thus affecting their service life. Another feature is that the single area of clay bricks and glazed tiles is very small, and there are many tiles to be covered and overlapped in unit area, so the weight per unit area is also high, usually more than 55 kilograms per square meter. Clay tiles have high water absorption, and their weight is much higher in rainy days.