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Protect the surface of the concrete floor
To protect the concrete floor, which is operated in the normal mode, or is subject to wear in areas with high traffic, there are several ways to protect the surface.
   Comparable ways: their cost, appearance and ability to perform the task to protect.
   In this article, we consider three ways to finish and protect the floor. Each of them has its advantages and disadvantages.
   Thin fil...

Finishing compositions based on water glass. Part 3
When used as part of exhaustion moderator comes coagulation and solidification of liquid glass. However, due to the presence in the composition of Portland cement with a finishing time is an increase strength of the coating due to hydration of cement minerals. Thus from colloids formed during the coagulation liquid glass are actively assigned to the water for hydration of cement, a porous media formed tumors filled Portland cement, which leads to...

Finishing compositions based on water glass. Part 2
Studies in Berlin Institute Federal institute for Materials Research and Testing, show that the average density of 1730 kg/m3 brick large proportion of pores having a size in excess of 1 micron is more than 90% [3] and they are responsible for the increased migration of fluids through brickwork.
   Most fully meet these requirements structure obtained by coagulation and water-soluble potassium silicate forming silica with a high sp...

Modernization and repair of self-propelled machines. (3)
Hardening electrolysis BORATING hinge pins and bushings mates working equipment hydraulic excavators EO-4121 (EA-4321) gives an increase in wear resistance 4-6 times compared to the bulk quenching details.
   Taking into account the high wear resistance of brazed blades, hardened sintered alloys (see Table 1), are recommended for carbide knives dumps graders DZ-122 and RS-98, combined machine E-405 based on KAMAZ, for front dumps a t...

Specialized exhibition Architecture. Construction (END)
Mari-lime brick and gas silicate blocks
   JSC "MZSK" produces silicate brick and a half, color (white, yellow, black, red, blue, green, brown).
   For the production of silica brick used quartz sand from quarries near the plant. Limestone enters the factory with Dobryatinskogo deposit Vladimir region. Silicate brick (Table 1) is used for masonry exterior and interior walls of buildings and structures, as well as ...

Geophysical processes primers and security. Part 5
In the center of Moscow can distinguish vertical structure comprising a crashing into the Earth`s crust magma elongated cylinder (Fig. 2) [5]. In the center section marked lack of extensive vertical zone converted waves ("blind spot"), going from the depths of 70-80 km to 7.5 km. Such "blind spots" are characteristic of the earth`s crust with the introduction of monolithic dense mantle rocks such as gabbro, diabase, etc. In such a zone Tashkent e...

Finishing compositions based on water glass. Part 1
The quality of the decoration of buildings for new construction and reconstruction depend not only on their aesthetic, but also the operational parameters, as good-quality finish - a guarantee of durable service basic designs, long maintenance-free operation, the costs for maintenance and care. Traditional binders used for the production of finishing compositions, liquid glass is widely used, but it has some drawback: coatings based on it gaining...

On possible amendments to the equation Griffiths
Griffith presented a picture of destruction allowed to formulate the problem of determining conditions of the beginning of crack propagation and find its general solution.
   As seen from the above schemes, in the process of crack propagation material directly adjacent to it "coasts" unloaded relaxes. This means that the stress and strain it decreases, and the elastic energy stored earlier in this area of ​​the body is re...

Construction skyscrapers - the requirements of modernity. Part 4
The program is a high-rise building in Moscow
   The project is now a high-rise building in Moscow is implemented in two main areas: the construction of business center "Moscow City" and implementation of the program of the Government of Moscow "New Ring of Russia."
   1. Moscow international business center "Moscow - City"
   The project includes the construction of buildings on the territory of abou...

Degree project - beginning of the road. (3)
Given the great diversity of subject matter and content of diplomas in various specialties, the jury is faced with great difficulties in determining the winners - "Who better violinist or a dancer?". Nevertheless, often based on emotional perception and can estimate the relevance and novelty, and the author`s contribution to the thesis project or job. Absolute winners in recent years have been graduates of Rostov CSO GASU St. Petersburg, Nizhny N...


 Information for builders




Of particular interest is Penoizol the repair of old buildings and structures with its pouring into the inner cavity walls - because it is not necessary to destroy the brickwork or removing wood paneling. In addition, due to the low density of the material on the additional load bearing structures dilapidated old buildings is extremely small.

   In designs filled penoizol (even if there are cracks in the outer wall), the penetration of moisture into the premises is excluded. And this in spite of his cell opening structure. However, he remains permeable.

   Penoizol is purely domestic material, because technological equipment and all the original components are commercially available in the Russian Federation. All designs are patented or are under examination in Rospatent.

   Already quite well known and well established small production plant penoizol series GZHU-H1, which is required to work an additional source of compressed air. They are successfully used in more than 100 cities of Russia, Belarus and Kazakhstan. These small-sized mobile units can be used as stationary for registration plates and "crumbs", and directly at the construction site for thermal and acoustic insulation of hollow structures.

   To produce, for example, one cubic meter of foam density of 15-16 kg/m3, the polymer resin is required (PRT-C) - 24 kg, a foaming agent (ABSFK) - 0.1 kg and the curing catalyst (phosphoric acid) - 0.4 - 0.45 kg Water - 25-30 liters. "SEC METTEM" delivers for its customers all the necessary components.

   The main component for the production of a polymer resin penoizol brand AMS-T. Today it is available in only one plant in the Moscow region, which naturally makes it difficult to transport to remote regions of the country and increases the cost. METTEM SEC is considering the deployment of resin production in chemical plants to the point of consumption. This would greatly facilitate the task of producing penoizol regions.

   The Center has created a technological line PL-10, providing for the mechanization of the operations, increase productivity and at the same time improving the quality of the material. Are also in the stage of "running" new models of existing facilities that will produce Penoizol with improved features that greatly expand the scope of its application.

   Greater authority than Penoizol wins, the more it appears fakes. I especially want to note that Penoizol (TU2254001-45581572-98 and TU 2254-001-33000727-2000) made only of urea resin UPU-D, which is produced only in the Moscow region on our order and delivered to consumers only METTEM SEC. Urea foams made based on other resins, no relation to Penoizol have. Moreover, the use of other cheaper resins leads to loss of ecological purity of foams and a sharp reduction in terms of their operation.

   In the final stage is another development center - a composite material based on soil - "gruntokompozit" with a density of 900 kg/m3 ... 1500 and a compressive strength of 25 ... 85 kg/cm2. It already belongs to the structural building materials. For the manufacture of "gruntokompozita" builders used binders and water, and most importantly - to 80% of the local soil. The mixture may be prepared in a mixer, and then may be poured into the mold or form, or be pumped directly to the object. In its structure, "gruntokompozit" reminds closed-foam, and as such can be applied in all areas of construction, from pavements to buildings (Figure) and constructions of various purpose.

   Together with the Research Institute for Building Physics and the Institute of Chemical Physics firm "METTEM" developed a standard to determine the service life of heat-insulating building materials. He approved of the Russian Academy of Architecture and Building Sciences (RAASN). We hope that this technique will allow builders still in the design process to predict durability. Endurance tests penoizol (more than 1000 cycles) in this procedure describe it as a very stable material, ready to serve more than one decade.

   Based on research and experience in the application penoizol in construction have been developed and used in the design:

   "This album is typical walling for monolithic housing" made by the specialists of the East of the European Union experts in construction, is a member of STC METTEM;

   "Directory of construction walling using penoizol as insulation," Samara GASA made with the active participation chairman of the energy saving Samara Branch of the Russian Society of Construction Engineers L. Evseeva.

   Development and organization of production of effective domestic materials - a task of national importance. Fully aware of this, SEC METTEM invites all interested and private organizations and hopes that Penoizol and other development companies will find its rightful place in the market of building materials and technologies, both in Russia and abroad.