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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



 Line  method  of  mass  reconstruction  of  a  five-story  building

Uniformity or similarity of the type of dwelling houses first mass, the principles of quarterly development, the same age and, therefore, similar types of work on reconstruction create ideal conditions for the use of effective, but somewhat forgotten in-line construction methods in the mass reconstruction of residential houses of the first industrial series .
   Commissioned by the Belgorod Regional Administration of the Russian Academy of Architecture and Building Sciences developed design solutions for the reconstruction and building of the first secondary Belgorod of large residential quarter number 367 shown in Fig. 1.
   In the quarter built 36 five-storey residential buildings to be reconstructed. The total area of ​​107.6 thousand square meters of houses. m According to the project of reconstruction using the brownfield reconstructed quarter multistory (10, 12, 17 floors) shirokokorpusnymi houses erected on the site of five-story building without demolition, housing area in the quarter increased to 243.7 thousand square meters. m or 2.3 times. Planning structure of building block is that all the houses easily geographically into three groups: the northern, eastern and southern.
   In each of the three groups built one new shirokokorpusny 17-story 100-unit apartment building for the resettlement of residents from the first five-story building to be reconstructed. And then in the three groups of houses are executed in parallel, series or thread reconstructive work on the five-story houses with their transformation into high-rise shirokokorpusnye. From theory and previous experience of using inline methods that of all possible methods of organizing in-line construction are the most effective. For line reconstruction of residential quarters number 367 can be arranged three complex interrelated complex stream comprising object streams for each reconstructed house. In Belgorod State Technological University. VG Shukhov Senior Lecturer VM Lebedev, using the idea of ​​network cyclograms developed SN Bulgakov in 1970, adapted to the conditions of the reconstruction of houses.
   Network sequence diagram clearly shows the development of the construction processes in time and space, allows the use of computer equipment for the control and management of the reconstruction. Original model for building network cyclogram serve cyclogram construction flows reconstruction of each object. It introduces an element of network models: work expectations, dependencies, events, numbered in accordance with the organizational and technological sequence in which they occurred.
   To be continued.