UNCONVENTIONAL REINFORCEMENT IN HOMOGENEOUS SPAN ELEMENTS FROM CELLULAR CONCRETE

Abstract

Nowadays, cellular concrete products are becoming more and more widely used in construction practice. The most common types of such concrete are foam concrete and aerated concrete. These types of concrete belong to fragile materials that cannot be used as span structures without additional reinforcement, which is important in the construction industry. Existing research and development concerns mainly traditional reinforcement with steel rod reinforcement. As you know, metal reinforcement has a fairly high strength, and therefore, when using it in structures made of cellular concrete, its strength is used only by 10-20%. The use of unconventional reinforcement allows to more fully use the margin of strength of the material of such reinforcement, 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 task of our study is to substantiate the possibility of using unconventional reinforcement of biological or organic origin 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. Materials of biological origin (flax rope, reed stalks, strips of bamboo stems), organic origin (kapron rope) and various types of mesh (metal welded and metal through-extraction) were used as working reinforcement in the experimental samples. 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 of organic or biological origin, or in the form of various types of nets, can be used as working reinforcement in homogeneous span structural elements made of cellular concrete.