Results of experimental research for lightweight monolithic floor slabs with combined reinforcement

The cutting-edge technologies have touched upon all aspects of human activity, as well as modern construction. If earlier the construction process meant great economic and labor costs, now modern construction reduces these costs by many times. One of the state-of-the-art technologies in modern construction is lightweight monolithic floor slab, which significantly reduces the consumption of materials. That is why this article examines the lightweight monolithic floor slabs and coatings with steel and combined reinforcement under the uniformly distributed load. In total, three series of samples have been investigated. The first sample, for comparison with other samples, has been fully reinforced with various-diameter steel bars. For the second and third samples, fiberglass reinforcement has been used. Within the course of the research the results of studying the lightweight monolithic slabs fitted with metal and fiberglass reinforcement have been obtained. Experimental dependences have been obtained for the deflection change, elongation and shortening in the span sections, the moment of occurrence, the cracking moment and crack width in the lightweight slab on the applied load at the loading steps. The stress in the span of the tension region of the slab, and the stress in the compressed surface of the slab during the failure of structure are given.