Choosing a brick

Bricks known to mankind for over 4000 years, but today it is the most popular material for construction of various structures. A variety of colors and shapes gives the building a unique appearance. Brick, easy to use, strong and durable. But our advice to you: Come to the choice of brick seriously. Brick is known to mankind for more than 4000 years, but today it is the most popular material for construction of various structures. A variety of colors and shapes gives the building a unique appearance. Brick, easy to use, strong and durable. But our advice to you: Come to the choice of brick seriously. To date, the world produced more than 5000 brick combinations of shapes, sizes, colors and textures of the surface, but all of them can be divided into conventional categories according to different indicators. By appointment: Private (construction), facing, special. Ordinary brick is intended for the construction of interior and exterior walls, and requires that they be further coated with plaster or facing material. Has a rough surface and often has low resistance to the environment. Relatively inexpensive. Facing brick outer surface has a high quality, resists water, frost and suitable for virtually all outdoor activities. The variety of colors face: from almost white to dark brown, may have a different shape (angular, rounded, etc.) Special bricks are suitable for specific operating conditions. For instance, fireclay (fireproof) is intended to form the internal walls of furnaces, fireplaces, exposed to high temperatures, acid-proof - for chemical productions; clinker (extruded) - paving pads for manufacturing steps, handrails, window sills, etc. Brick is available in size: single, one and a half, double, non-standard (European size, restoration, quad, eight-, etc.). Dimensions of single brick: in length ("stretcher") - 250, in width ("poke") - 120, height - 65 mm. The height of one and a half a brick - 88 mm, double - 140 mm. In one meter in height masonry is placed approximately 13 rows of single bricks, 10 - one and a half, and 6,5 - double. Joints (horizontal and vertical) is usually made of 10 mm. For emptiness brick is divided into solid and effective (slot). Solid brick is called with no holes or holes with technological Voidness no more than 13% and a density of more than 1600 kg/m3. Slotted or perforated brick has a hollowness of 45% and the density to 1500 kg/m3. Insulating ability of the masonry bricks effective compared to full-bodied above that will reduce the thickness of the walls. Density of brick can vary from 750 kg / m 3 (production Brick production of "Win / Knauf) to 1900 kg/m3 (sand-lime brick). In terms of composition and technology of brick is divided into: ceramic (clay, the last full cycle of firing), dry pressing (usually clay, peat or rare earth, the last incomplete burning or heat-cured only), lime, acid, fireclay (from a special clay), " Keram (sintered silicon sand). Sand-lime brick is heavier and stronger than red, but it can not be used in foundations due to poor water resistance and in masonry chimneys because of its decomposition at high temperatures. Brick dry pressing and can not be used in high humidity conditions (bases, foundations, fences). For surface quality: smooth and embossed. And if ordinary brick relief is applied for greater engagement with plaster solution, then it is an element of personal decoration. Furthermore corrugations in various patterns are the bricks with chipped surface. On the strength of brick is divided into grade 50, 75, 100, 125, 150, 175, 200, 250 and 300. Keramin can reach more than 1000 brands. Mark means the limit of compressive strength in kg/cm2. The higher the grade, the more durable brick. For masonry low-rise brick buildings mark can be quite low (M100-M150). Strength of masonry is 60% dependent on the formulation of the solution, for example, at a ratio of height of the wall to its thickness is equal to 22 (8-foot wall in a half a brick), the brand of solution can not be less than the M50. In frost resistance bricks is divided into grades Mrz15, Mrz25, Mrz30, Mrz35, Mrz50, Mrz100. In the Central region to use brick with frost below 25 cycles is not recommended. Water absorption of bricks must be at least 6 and not more than 16%. Choosing a brick, one should bear in mind that the thickness of concrete elements (bridges, beams, slabs) is a multiple of the normal height of masonry brick (75 mm) or equal to the height of single brick (65 mm). This is done for the convenience of interfacing these elements with masonry. Source: http://art.tool.ru/ar/7819/vibiraem_kirpich.html