Determination of characteristics of crack resistance of fiber-reinforced concrete on gypsum-cement-pozzolanic binder

The article provides a general description of the gypsum-cement-pozzolanic binder, as well as the classification and features of the use of various types of fibers. The article also describes a method for determining the composition of the gypsum-cement-pozzolanic binder, and the composition of heavy concrete on the selected binder. To assess the effectiveness of the reinforcement of heavy concrete on a gypsum-cement-pozzolanic binder with glass fiber, tests are carried out on the strength and energy characteristics of its crack resistance. An important result of this study is the diagrams of deformation of concrete and fiber-reinforced concrete specimens during bending, obtained during testing of crack resistance. The article presents a comparative analysis of the obtained diagrams. The article is published based on the results of the research work carried out as part of the competition for research grants by scientific and pedagogical workers of SPbGASU (Federal State Budgetary Educational Institution of Higher Education «Saint Petersburg State University of Architecture and Civil Engineering») in 2022.