About  the  rapid  pace  of  development  of  the  construction  industry  in  China.  (3)
  ► Materials
  ► Equipments
  ► Tehnologies
  ► Information
  ► Contact us
  ► Home

 Site Search




 Information for builders

 The new articles

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



 About  the  rapid  pace  of  development  of  the  construction  industry  in  China.  (3)

Particular attention is paid to China`s road construction. Fast growing standard of living of the population inevitably leads to an increase in the number of vehicles, which still remain the main vehicle bike and horse-drawn carts. According to the magazine "The Economist" in the "World in Figures" number of cars in China in 2005 amounted to 6.7 units per 1000 population, while in the U.S. the same figure is 481 car. In the next 3 years the number of vehicles in China will double and the annual growth rate of 4.7 million units. In the past, the country had sold 5.5 million cars and if the growth rate of autostructure will not be limited, then by 2010 the annual production of cars can reach 20 million units. In the period from 1998 to 2003, China used $ 6.2 billion of foreign investment in the construction of roads and in the next 20-30 years is planned to build more than 80 thousand kilometers of roads that need to connect more than 300 cities in the country. Aware of the need to create an extensive network of roads to GDP growth, the Chinese government in 1991 began work with foreign experts and credit institutions on a national network of roads, including high-speed roads in the north-south direction (5 roads) and the east-west direction (7 roads) to ensure the safe movement of people and goods at speeds from 60 to 100 km / h. The latter circumstance is essential, because Many parts of China are located in remote places with harsh climatic conditions (seismic, rainfall, landslides). As an example, construction of a road in Sichuan province, connecting two regional center with a population of 42 and 30 million people. -118 Km road length, the project cost - $ 827 million (24% of them - Asian Development Bank loan), the number of employed in the construction - about 50 thousand, the number of bridges -121 (total length of 25.6 km), the number of tunnels - 17 (total length of 19.2 km), the number of displaced families - in 2184, the design speed - up
   80 km / h The completed four-section of road will reduce travel time from 12 to 4:00. It should be noted that China has grown rapidly and develop their construction and design organizations working in the country and abroad. American Journal of ENR began to publish regular lists of 60 industry leaders stating the amount of their annual revenue. Among them we can point to major contractors: State Corporation on Construction ($ 9.026 billion), railway engineering and construction corporation ($ 8.653 billion), Railway Construction Corporation ($ 8.47 billion), as well as the largest design organizations: Energy Engineering Advisory Group ($ 326 , 7000000), hydropower engineering advisory group ($ 209.9 million) and the architectural design and research group ($ 117.3 million).
   Noteworthy, and such a fact as the establishment of the national award for achievements in the field of environmental protection established by administrations to protect the environment. Presentation of the first such award was held December 1, 2005
   To be continued.