Posts Tagged ‘Technology Repair’

The projection of the points of intersection with the metal ionization cathodic depolarizer recovery curve on the x-axis gives the corrosion current icor in the absence of any external influence on this corrosion system, and the projection of this point on the vertical axis – the value of established in these conditions, corrosion potential Ekor. When passing through the corroding metal cathode current of the external potential is shifted to the negative side and takes a new meaning. The rate of corrosion metal is determined by the appropriate current to direct ionization of the metal at this new value of the potential is equal. In a question-answer forum Gregg Engles was the first to reply. The diagram shows that this state is achieved by passing an external current value. And part of this current is to suppress the anodic reaction of metal ionization (ie, its corrosion), while the other part – the acceleration of the cathodic process:. The increase in external cathodic current to a value izasch ensuring the achievement of equilibrium EA corroding metal building, completely inhibits the corrosion process (see Fig. 1). According to the theory, in general, current full protection izasch in corrosion with hydrogen depolarization izasch ikorexp = (DEzasch / cr), where ek – Cathodic polarizability corroding metal dE / dlnik.

Usually izasch @ icor to acidic environments. Under these conditions, the bulk of the external current is transmitted to the acceleration of hydrogen evolution. For acidic environments, this method of protection is ineffective and even more risky, since, firstly, much of the current is flowing not to suppress the corrosion and the hydrogen evolution, and secondly, the intensive evolution of hydrogen on metal surfaces can lead to hydrogenation (hydrogen in the metal dissolution) and as a consequence – the degradation of its mechanical properties, peel the protective coatings, etc. However, for the most common type of corrosion of metals with oxygen depolarization under conditions of limited oxygen supply the imposition of external cathodic current effective to prevent corrosion.

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Decorative caps on poles, protective caps at the poles are made of different materials caps – is the protection for the fence at the poles: the pole cap is made (a decorative or protective) of various materials in including copper, steel, various colors and coatings for more than six species, including corners and other geometrically complex. For taking a very important element is the hubcaps, thanks to their vertical geometry. Caps on pillars – is the protection and decoration of your fence designs. Cap to the fence is to protect – is its primary function! Overhangs at the top of the hood, projecting a few inches on each side and a specially skirt designed to drain rain. Water flows not to post, and at low tides base of the fence, acting as an umbrella – an umbrella as protection from the rain man. This is especially important in winter when the water is running down the pole, extending freeze greatly in volume, decreasing melts, then freezes again, causing the destruction of the fence post.

Hedges and fences are not only to protect the territory from foreign penetration and mark the boundaries of parks and gardens. Same hood for taking plays an important role in the landscape. Beautiful intake may well fit into the image of the city and do not disturb the aesthetics of nature. They give a complete, finished appearance. They can easily pick up, depending on the type of fences, the most appropriate style. Making the fence looks more solid, aesthetically pleasing and beautiful.

Caps we make on the individual sizes of steel, copper and coated in various colors and produced with the least amount of standing seam locks. High precision manufacture of the product, and the connection cap is sealed separate compound, giving additional stiffness and tightness, and no water gets inside the shell. Using the hood you will protect your pole and fence. The life of your poles made of concrete, brick and stone of which made your fence. We produce hats of all sizes and shapes of drawings and sketches of the customer.

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The main purpose of these materials – to dissolve and dilute the paint materials. Knowing the composition and appointment of solvents and thinners, can be successfully used them for other purposes, for example, for the manufacture of adhesives, degreasing materials, etc. Simple solvents Acetone – dissolve natural resins, oils, polystyrene, epoxy resins, vinyl chloride copolymers, polyacrylates, chlorinated rubber. Gasoline Galosha, B-70 dissolves rubber, hot form – polyethylene. Benzene dissolves oils, fats, waxes, rubber, cellulose ethers, some silicone resin in hot form – polyethylene. Butyl acetate dissolves cellulose ethers, oils, fats, chlorinated rubber, vinyl copolymers carbinol resin. Dichloride dissolves dammar, Ku-maroon, vinyl polymers, acrylics, polystyrene.

Xylene dissolves alkidnostirolnye and divinilatsetilenovye (lac 'Etinol') polymers. Methyl acetate – acetone analogue. Methyl alcohol (methanol), dissolving the cellulose nitrate, polyvinyl acetate, novolac resins. Turpentine dissolves Kopal, dammar, colophony. Thinner oil, al-kidnostirolnyh and epoxy paints (varnishes). Solvent dissolves oil, bitumen, rubber, urea oligomers poliiefiry tetroftalevoy acid Polyetherimide and polyesterimide. Toluene dissolves shellac, Kopal, cellulose esters, polystyrene, silicone resin. When mixed with other solvents (he – the main component) dissolves epoxy, vinyl and acrylic polymers, chlorinated rubber, skinny alkyds.

In the hot polyethylene dissolves. White Spirit (Heavy fraction of gasoline) dissolves fatty alkyds, butyl-and tsiklokauchuk, polibutilmetakri-lat epoksiefiry. Cyclohexane dissolves etiltsellyu-vine oils, fats, waxes, rubbers. Cyclohexanone dissolves cellulose esters, fats, oils, most natural and synthetic polymers, polyurethane. Acetate dissolves most of the polymers. Cellosolve dissolves urea oligomers carbinol resin polivinilformaletilal (vinifleks).

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This allows you to move "dew point" in the insulation (Styrofoam) and significantly increase the efficiency of lightweight concrete in the construction and significantly extend the life of the building. Reade Griffith is often quoted as being for or against this. The required thickness of expanded polystyrene insulation boards for the outer insulation of the walls (in the "wet" the facades) required thickness of insulation (EPS) at minimally acceptable heat resistance of the walls of buildings of different purposes and different climatic conditions (in accordance with SNIP 23-02-2003 "Thermal protection of buildings") varies according to region of Russia and the region application of thermal insulation. Terms perform calculations for the table: The calculation is based on the requirements of SNiP 23-02-2003 For sample calculation taken a group of buildings – residential, medical and child care centers, schools, boarding schools, hotels and hostels. With the new construction required thickness of insulation is determined by the following constructive solutions – bearing portion of the wall is made of ceramic bricks or corpulent rock thickness of 380 mm and the outer protective layer – 4,5 mm plaster reinforced with fiberglass, the thickness of the decorative layer is determined by the fraction of the filler. The wall on the inside of a finishing plaster layer thickness of 20 mm. The coefficient of uniformity of heat engineering walls – 0.95. In the reconstruction of additional insulation thickness was determined with the following conditions – the walls are made of mud brick corpulent thickness depending on the purpose of the building and construction area – 380, 510, 640 or 770 mm with 20 mm plaster for buildings of the 1st and 2nd groups, and without plaster – for building third group. The protective layer of additional insulation is made of plaster 4.5 mm thick, reinforced with alkali-resistant fiberglass, and the thickness of the decorative layer is determined by the fraction of the filler.

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With the present development of production become increasingly popular finishing materials, made of drywall and plastic. But such material as wood, time-tested, still in favor. And of course the role of cladding material itself the best option remains the wooden paneling. With groove and tongue, it is easy to assemble and versatile in use it is possible to "sheathe" any building and not just facades, but premises from the inside. The most popular wood siding – siding is made of pine – it is one of the cheapest, and it is to this day, holds first place in the category of price and quality. But if you want that would-room with his hands, in this case, the maximum lime suit lining, because it endure high temperatures and very poorly heated, and compared with the pine tar does not allocate.

Linings are made from different woods such as alder, oak, mahogany … .. but because of the very high prices they are used much less frequently than pine or lime lining. This lining material is divided into four classes – Extra, followed by classes – A, B, C. Lining-class produced the most expensive and vysokochestvennyh parody of wood, as it is free of knots and, accordingly, it is very expensive. The lower class bunks, the lower the quality and the higher the number of knots. Before you finish the installation of lining, it must be during the day for the acclimatization of the material to withstand the premises for which it is intended, and prepare all the necessary tools. You will definitely need the following tools: screwdriver, drill, wood screws, 75 and 35 mm, electrofret, screws, quick installation, wall paneling, klyamera mounting studs or 20 mm, level, hammer, plumb, mounting thread, hangers, stapler, staples, cabin, vapor barrier, mineral wool, wood block 40 * 50, and before any work you need wiring, set up to power.

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Drywall is widely used in modern construction, primarily in order to align the walls and ceilings. Also, this building material helps to soundproof the room. Plasterboard has a light weight, can be easily transformed, so that in the modern interior design, it stands in the most unexpected combinations. The name "drywall" well reflects the structure of this building material. Roughly speaking, drywall is a slab of plaster layer, covered on both sides of sheets of cardboard.

There are some types of drywall. Ordinary gypsum board used for interior residential spaces – rooms, corridors, where the humidity does not exceed 70%. Bathroom, kitchen and other rooms with high humidity, a special moisture-resistant drywall. Vlagoottalkivayuschie properties of such a building material acquired by impregnation of gypsum special substances, repelling moisture. Although such material and are used in environments with high humidity, it must be additionally protected by covering with waterproof paint.

Fire-resistant gypsum board is also produced, which is used in areas with high risk of fire or high temperatures. When a manufactured building material, the gypsum is added fiberglass, which prevents the destruction of the material under high temperatures. Developed even drywall, which combines the quality of water and fire, but it is definitely more expensive than other types of drywall. The main preimsch6stvami drywall is its plasticity, the ability to conceal surface irregularities, which can not disguise the plaster, and, moreover, drywall – it is environmentally friendly building material. But the drywall has its drawbacks, in particular, it will spoil by moisture, is a useful floor area, is worth more than other building materials. If you are going to equip the apartment with the help of this construction material, in addition to the drywall you need to buy either: 1.

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We recommend that you use to plaster the walls 'stucco'. To understand the benefits of using 'plaster', it should consider the following features: applied to the wall with a thin layer that allows you to display a wall with a minimum of material, does not shrink and does not crack, dry out in two times faster than conventional plaster putty consumption of plaster surface is greatly reduced. If take into account all these factors, the total cost of materials compared with similar work using conventional cement-sand mix will remain unchanged. However, you will significantly save on time, the cost of the work and certainly get better and more reliable result. Before applying the plaster, the wall is applied to the soil depth of penetration, which allows a layer of plaster is stronger hold on the wall. In plaster wall in a fiberglass reinforcing mesh, which allows you to smooth out the voltage inside the plaster and avoid the appearance of microcracks.

Next on the surface of the plaster is applied several coats of putty. Before each layer of the ground surface. Then the wall is polished and applied topcoat sealers (special putty with a small fraction). If the wall is being prepared for painting, polishing and then coating produced by the light special high-powered searchlights, which allows you to keep track of the smallest flaws on the wall. At the end of the pre-treatment of the wall is ready for application of finishing materials (paint, wallpaper, decorative plaster, etc.) Technology Application of different types of finishing materials are not identical. Next we take a closer look at some of them.

Paint the ceiling preparation does not differ much from the training walls. Device screed and waterproofing First, using gidrourovnya done marking of the floor level. Of the place, most raised relative to the rest room, then on the walls made a mark of zero.

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Before you buckle your hands is the surface of the concrete slab is cleaned of dust and dirt. Ideal to clean concrete impossible, so then primed surface binders. Primed surface provides good shvatyvaemost with screed. It is important for either sex, but especially for ceramic tile. If buckle under the tile poorly grasped with the cooking surface, then walking on a tile will be heard the characteristic sound of, and eventually the floor will be uneven and the tiles will start to detach from the base and “fly.” In Russia traditionally buckle made of dry concrete mixtures. Since the mixture of concrete and sand in any proportion – not a very durable material, then it is added adhesives. Before the screed will be laid floor covering, it must dry. An experienced master of the construction firm will always be able to pinpoint the degree of humidity tie, I will only note that the average time needed to dry – 45 days.

After this, the screed is applied waterproofing cover, and on top – moisture-resistant sheet of plywood, 12 mm thick. Plywood does not interfere, under any cover, but it is especially necessary for flooring, or high humidity (water leak or just a few days of early autumn, when is wet weather and central heating is not included) can destroy the most beautiful and expensive hardwood floor. In the European technology for the manufacture of cable ties are special self-leveling mix – so called self-leveling floors. Under these mixtures for additional noise and heat insulation are often put a layer of styrofoam, and for extra waterproofing on top plank polymer film. This floor dries much faster common ties (approximately 10-15 days).

Directly to the self-leveling floor can be laid tile, laminate and carpeting. To lay the same parquet necessarily need a layer of plywood. In addition, the bulk layer has a floor very small thickness (25 mm.), which is especially useful in homes with low ceilings.

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