Foam concrete is a modern building material, used as an effective insulation and structural elements (in units) for low-rise building. Its advantages are obvious and quite visible. First of all, captivates its environmental friendliness. Foam concrete does not contain harmful chemicals. It consists of cement – mineral organic matter.
As for water resistance, this quality is far superior autoclaved aerated concrete. The surface of the foam has a closed cell structure, and therefore absorbs very little moisture. Durability of foam under normal operating conditions is not limited. Over the years, it becomes only stronger. In addition, it has low thermal conductivity. For low-density thermal insulation foam concrete does not yield polystyrene. But unlike the latter it does not eat rodents. The positive properties can be attributed to the monolithic.
Flooded into the brickwork under pressure, foam fills all the cracks. Congealing, he further connects the outer and inner surfaces. In this case the wall does not lose its ability to "breathe". In addition, non-combustible foam concrete, which distinguishes the construction of concrete houses. The exact cost of building the foundation and building blocks of foam can calculate according to the selected home construction.
Fireplaces great variety of systems, but this article deals with one of the most simple fireplace – brick, which the owners themselves can add up in suburban or garden house. What are the requirements to the fire? – Fireplace not should smoke – fireplace must have a good warm up the air – fireplace must be beautiful and fit into the interior. Dimensions Dimensions of the furnace combustion of sizing fireplace with his hands begin with the definition area and volume of the room where the fireplace will be arranged. For example, a porch or a room country house with area of 10, 15 or 20 meters, ceiling height 3.3-3.5 meters. Volume of the room will be respectively 35, 50 or 70 cubic meters. m. The area of the flue fireplace openings for these volumes relates to the area of the premises as 1:50 – 1:70 and will be respectively 0.2, 0.3, 0.4 square meters.
m. We define the height and width of the fireplace flue openings, so-called portal firebox. There also exists dependence – for the small fireplace that will be 2:3 (height to width). – Podorbnee here. That is, for our fireplace the size of the portal will be respectively: – 0.2 square meters. m – 36h45 cm – 0.3 sq. km.
m – 44h67 cm – 0.4 sq. km. m – 52h77 cm depth of the firebox fireplace with a tall portal must be in respect of 1:2-2:3, this size is also necessary to observe, as most of the depth reduces the heat in the room, and the smaller is smoke. In our case, this depth will be: – for section 0.2 square meters. m: 18 – 24 cm – for section 0.3 square meters. m: 22 – 30 cm – 0.4 kV for the cross section. m: 26 – 35 cm Now, we have defined the dimensions of the firebox of the fireplace (see Fig. 1). Fireplace smoke hole depends on the size of the firebox opening and must be 8-15 times lower, respectively, it is: 0.02, 0.03 and 0.04 sq. km. m. If the chimney brick chimney, these dimensions are 14X14 and 14X27 correspondingly see if the chimney flue chimney with a circular, its diameter ranges from 8 to 14 cm in height define the chimney, in our case it should be 4-5 meters. The device inserts Fig. 2 The device unit firing furnace for better heat reflecting ability of the fireplace firebox preferably internal walls meet at an angle to the side outward, and back tilted forward, starting with 1 / 3 of the height above the firebox fireplace smoke chamber is arranged between them produced a cornice, which is called a 'pass'. Pass prevents the removal of soot and sparks from the fire outside and smoke inside premises. His device is shown in poryadovkah. So, we figured out basic technical parameters of the fire, will now determine its overall size. We arranged to meet our fireplace brick, hence, all sizes should be given to the unit masonry. Brick has a size of 6,5 X12X25 cm, and masonry seam about 0.5 cm
Formation of coatings (PC) – is the curing (drying) coatings (paints), which takes place in specific time-temperature conditions, which is one of the most important stages of technological the process of staining, a significant impact on physical and mechanical, safety, and in some cases, decorative properties of PS. The technology of coatings distinguish natural and artificial drying. Natural drying carried out under normal conditions (for example – drying enamel PF-115), energy-intensive artificial drying, process is implemented using a special, sometimes technically complex equipment. So natural drying paint is always preferable, and in many cases due to the specific technology, the only possible. This is particularly relevant curing method for coloring large products on open sites, in rooms with PC repair.
To cure the in vivo requires a certain, for most paints an extended period of time. Therefore, methods for accelerating curing of in vivo is of considerable practical interest. They are based on the use of quick-drying paint consisting of film formers, such as acrylic or perchlorovinyl. To reduce drying time results in chemical or physical modification of epoxy, alkyd and urethane oligomers cured under natural conditions in a long time. For example, the combination of epoxy resin oligomer perchlorvinyl cuts drying time of epoxy coatings with 24 to 1 h at 20 C, akriluretanovye materials cured under normal conditions for 2 – 4 pm Currently, various manufacturers developed a number of coatings, fast drying in natural conditions. This – epoxy-vinyl enamel EP-1294 EP-1267 EP-1236, "Evikor"; akriluretanovye enamel AU-1518 "Universal Luxury" AK-1511 "Raznotsvet" as well as widely known glyptal materials – primer GF -021, and others. And is characterized accelerated drying time under natural conditions, these coatings can be applied not only to paint outdoors or in repair technology, but also on the production of conveyor lines. Using the dilution of the material more volatile solvents, reducing the thickness of layer applied, the number of layers, the use of catalysts, cure, more active hardeners and accelerators are also resulting in intensify the process of curing the PC in the wild. GA Mironov (JSC "Research Institute of LCP")