Abstract
Composite rebar is becoming a practical alternative building material day after day, replacing steel rods as reinforcement in concrete structures. The combined method is the use of steel and composite reinforcement, the use of heavy and lightweight concrete together in reinforced concrete elemen ts, which will make the structure significantly economical where the current construction is taking place. However, the fragility of composite reinforcement and insufficient studies of lightweight structures do not allow their use on a large scale. The art icle deals with the work of lightweight monolithic roofed and (or) coatings with steel and combined reinforcement from the action of a uniformly distributed load. In order to identify the features of lightweight monolithic slabs with combined reinforcement , three samples were presented as well as for the study of the stress-strain state. As a result, the experimental load-deflection relationship, the moment of cracking, the breaking load is presented. The following problems have been solved experimentally: the results of the study of coated slabs with steel and combined reinforcement are presented; the calculation schemes of lightweight slabs were determined, and the information scheme of the experiment was developed.
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