WELDED METAL MESH AS A TYPE OF UNCONVENTIONAL REINFORCEMENT IN SPAN ELEMENTS OF CELLULAR CONCRETE

Abstract

The construction industry of today requires not only the maximum reduction in cost while ensuring the reliability of the buildings under construction, but special attention is paid to the energy efficiency of buildings. One of the ways to solve such problems is to use cheap, at the same time high-quality and easy-to-use materials. Cellular concrete can be confidently attributed to such materials. Domestic and foreign experience in the construction and operation of residential, civil buildings and structures has shown the effectiveness of the use of cellular concrete as enclosing and heat-insulating elements. According to its bearing properties, cellular concrete belongs to brittle concrete, and therefore without additional means (installation of elements that would perceive tensile forces) it is difficult to use it as a span structure, which is important in the construction industry. In the structural elements of cellular concrete, which are used in the construction industry today, the traditional reinforcement with steel rod reinforcement is mainly used. It should be noted that this type of reinforcement with a sufficiently high strength, in structures made of cellular concrete, uses no more than 10-20% of its strength. Unconventional reinforcement allows to make fuller use of the safety margin of the material of such reinforcement and reduce the cost of the structure by reducing the cost of unconventional reinforcement compared to metal rod reinforcement. Not enough attention was paid to the study of span structures made of cellular concrete, and the issue of the use of unconventional reinforcement in such structures was practically not considered and therefore not studied to the end. The objective of our study is to substantiate the possibility of using unconventional reinforcement in the form of welded fine metal mesh in span structures made of cellular concrete, which would be an effective substitute for steel rod reinforcement. In order to study the possibility of using such reinforcement in span structural elements made of cellular concrete, experimental studies of experimental beam samples were conducted. Fine welded metal mesh was used as a working reinforcement in the prototypes. The analysis of experimental data showed that the use of unconventional reinforcement in span elements made of cellular concrete causes an increase in bearing capacity, a decrease in deformability and an increase in crack resistance under load. Summarizing, it can be stated that unconventional reinforcement in the form of fine metal mesh can be used as working reinforcement in span structural elements made of cellular concrete.