Concrete construction
28.12.2009 в 13:30
Concrete is a long time has been and remains one of the most widely used materials in construction. However, the word "concrete" are often associated with the panel buildings or, at best, modern frame-monolithic designs. On other versions of this material in construction mentioned infrequently. However, such options exist. In this article we again appeal to foreign experience, this time related to the problem of extending the use of concrete. Povnozbirni concrete pitched roof of concrete elements for use of pitched roofs is liquid and maloposhyrenym decision. However, in some cases it seems best.
A typical example from this field: the foundation and walls of buildings that are made of massive concrete structures (which obuslov Lena specific requirements of the project - insulation, shumozaschytnymi, pozharozaschytnymi etc.) capable of withstanding very heavy roof structure with a cheaper concrete elements. In addition to the option device when in use concrete roof rafter construction in conjunction with standard conventional roofing materials, option using povnozbirnyh roofing systems with concrete. Povnozbirna construction is finished on farm and plate. To produce farms used grades of concrete with high strength for plates, on the contrary, light or penobloka. The advantage of roofing construction done so, is its high insulating capacity. Therefore povnozbirni concrete pitched roof advisable to use in buildings and facilities located in the territories, "problematic" in terms of increased noise (eg, areas near airports, railroads, intensive automobile highway it, etc.). Building physical свой-stva komirchastyh lightweight concrete and make a positive impact on energy efficiency of buildings with povnozbirnoyu concrete roof. Concrete slabs used as the main roofing material, act as reservoirs of thermal solar energy. Collected and stored heat is transferred inside the building in the volume of the building, raising the room temperature and helping to reduce energy consumption for heating. With low thermal conductivity, elements of the lungs and penobloka but do not create obstacles in the way of natural movement of water vapor. Therefore, sites built using povnozbirnyh roofing structures with concrete, creates micro-climatic conditions conducive to living or working people. Undoubtedly, this type of roof cover and the main advantage of povnozbirnyh structures with concrete - the possibility of rapid and malotrudomistkoho installation. Standard low roof of the building may collect Ana just a few days.
Concrete roof slabs adjust to each other, and the seams between them are filled with special
packing material. Thus, for a short period of time creates a closed and invulnerable to atmospheric action box building, inside which you can start the implementation of manufacturing operations. Since finished concrete elements are designed and turned roofing
structures of any shape and configuration. Concrete roof with a slight slope is an excellent base for your so-called green roofs. Promising solution is also krovel concrete device, which is a combination of the exploited and ozelenyuyuchyh areas. This solution is used often in the construction
of storage facilities, shops and office buildings. Melkoshtuchnyye concrete wall elements is much more common than povnozbirni concrete roof,
wall constructions were pieces of concrete elements - u ustotnyh pustotnyh blocks and stones. Melkoshtuchnyye wall elements are made of lightweight concrete with porous structure. This achieved two important advantages: low weight of its own elements and their low thermal conductivity. Porous structure of the material produced through the use of fillers in the manufacture of concrete with pumice and clay particles. Measure porosity of the material is determined depending on the circumstances in which he applied. The fact that the porosity of concrete makes a direct impact on its density. And then have to choose which characteristics - thermal conductivity or zvukoprovidnist - important conditions for future use of the material (here traced this pattern: the smaller the density of concrete, the greater its insulating ability and, conversely, the lower its sound insulating properties).
Class strength and stiffness of products installed within 2 to 4 N / mm 2.
Dimensions of such elements may vary in a wide range of meters. Technology erection of walls with pieces of concrete blocks can also be different. The most widely prevalent standard technology stack from
using the solution. In this case, the seams between the blocks should not exceed 10 mm, especially when it comes to laying the front facade. The front
rack to perform better with another technology that does not include the use solution, when stacked blocks in groove and ridge. There are several kinds of pieces of concrete wall elements: pustotni lightweight concrete blocks, stones penobloka etc. They differ from each building and its physical characteristics, dimensions and other parameters. Thickness of external walls, which are reduced to pieces of concrete blocks in buildings, which provides long stay of people in the German construction standards must be at least 24 cm. Naturally, when choosing the thickness of walls is taken into account not only need the heat capacity of hrazhdayuschyh structures, but also stress that act on the wall. Melkoshtuchnyye wall units can also be used to create multi-wall structures. In this area you can use these solutions as a barrier wall, barrier wall and an additional insulating layer to insulate the walls with a layer of plaster and other options. The thickness of the hard shell walls, which is must in all these cases be not less than 11.5 see. Erection of walls with pieces of concrete blocks has proved a very effective solution in terms of energy saving and rationalization of construction technologies. Elena stranger
