Reinforced concrete is a monolithic concrete structure reinforced with steel reinforcement. To maintain a given shape of the product during transportation, on the surface, the product is reinforced with a metal net. Reinforced concrete can be produced both by separate structural elements, and in the form of finished products (lobes). They are made both from heavy and light concrete, and from cellular, heat -resistant and other types of concrete. Products can be monolithic, prefabricated and prefabricated monolithic. Due to its exceptional strength and ability to withstand significant loads, in particular shock, AUTs are used mainly in the construction of residential buildings and industrial facilities, including in seismically dangerous areas.
Separately, pre -stressed structures are necessary, which find the widest application in construction.
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The advantage of these structures is that after their installation, the forces acting on them during operation, transfer them to an unloaded state, which significantly increases the reliability of the structure.
The tense state of reinforced concrete is created in its manufacture, by stretching of the reinforcement. The reinforcement is stretched with the help of jacks and, after filling the form with a solution, is withstanded in this state until completely solidified after a certain time. After that, the load from the reinforcement is removed as a result of which, turning into the original state, and being firmly connected with concrete, creates a compressive stress in it, that is, translates it into a tense state.
After the installation of such a design in the structure, it usually experiences bending or stretching loads, which return it to an unloaded state.