Concrete having strength steel
In SSC Construction in NIYiZhBe developed a new material - porobeton. Specificity is the use of monolithic technology porobetona the construction site. It damp construction immediately after the curing process meets the maintenance and valid. The building frame is constructed by the scheme, are the column and beam. Porobeton with volume weight 250 kg/m3 mineral used as a durable, environmentally friendly insulation for exterior walls, with a mass of 900-1100 kg/m3 - for floors, with a lot less volume weight - for interior walls. It remains industrialnost construction because concrete with different volume and characteristics prochnostnymi prepared on the same technical equipment. The main advantage of the new material and technology - to reduce the weight of the building twice with all the consequential effects - lower transport costs, the solution problem we have the strength to lower floors of high-rise building or an increase in the height of the building twice in the same frame, reducing the seismic loads. Another form of concrete - with compression strength over 200 MPa, kg/cm2 or 2000 - the same, which owns steel grade Article 3. At the same time its strength stretching can reach half the size of the compression strength using dispersed reinforcement, ie about 1000 kg/cm2. Adequate construction has not yet been established, but now the story can be recommended for use in bridge structures. With this material you can make sculptures and other plastic items. On this basis developed a special "architectural concrete, wear-resistant and frost-toned tile coatings and frost basement and other concrete elements of their capabilities. Actual problem completion and commissioning of abandoned, not suspended object-dovhobudiv to possible changes in their functions ionalnoy orientation. This institute TSNIYISK them. Kucherenko, together with other institutes and factories that are in SSC Construction, a method of determination and strength of soil bases, major components, monolithic and weld recommended technical measures to strengthen the structure as needed. This example is a neighborhood in Moscow, which are working on completion and commissioning of housing for military personnel. Projects were made seven years ago, houses were built 2-4 years and for several years without prostoyali conservation. In Russia, such facilities - many hundreds of thousands of square meters, and offers relatively cheap, cost-effective to bring them into operation, if reliability and ensure compliance with current regulations. Institute NIYIOSP them. Hersevanova created a system of scientific support, a set of design decisions and technological methods to ensure reliability, safety and efficiency of underground constructions royitelstva century urban destination. In Moscow, a number of objects shown in practice to secure the construction of deep pits even on the shore of the river, along with the existing buildings, including and architectural, to device 1-3-storey basement under part or in whole buildings for garages, pools and so exploited in buildings to prevent deformation of entire streets in the construction of reservoirs along the depth of them, to strengthen the foundations to superstructure floors to full compensation osidan, that support the foundations at a constant level for the unique buildings in the manufacture of any ground and geotechnical works near or under the same building. These results achieved through the development of theories - technological soil mechanics, the emergence of new methods of construction: burosekuschyh piles for retaining walls and curtains protivofiltratsionnyh complex configuration, driving screws, protecting trenches or interrupt lines skol zheniya; method of compensating metered injection, due use of new concrete, which provides strength 400-600 kg/cm2, waterproof W = 12-20, range 70-80% strength in two days, the creation of concrete mix with settlement cone 18-20 cm, not rozsharovuyetsya when concreting under water. Specialists of the Institute developed a system for monitoring the facility and special regulations of the work by which the appearance of inadmissible osidan foundations of the existing buildings in the manufacture of geotechnical works near it ceased to be inevitable and occurs only when the singer admits the lack of work. In TSNIYISK developed domestic adhesives twice cheaper imports, suitable for the manufacture of wooden structures, working outdoors, and five times cheaper - for the construction of buildings with the same durability. These adhesives, in fact, relieve the problem of the cost of laminated structures and allow the widespread use because of their cost per ton suschoyi capacity is not compared with the cost of steel and concrete structures. By Vyacheslav HYLOVICH