Abstract
The article presents the results of a study of the effect of microfiber based on high - density polyethylene and polybenzoxazole on the axial stretching of fibrocomposites. The definition of the phenomenon of deformation hardening of a hydration hardening fibrocomposite is proposed. Characteristic deformation diagrams of various fiber - reinforced composites are obtained and analyzed. The ranges of values of deformation hardening and plastic deformation are determined, as well as the factors that determine these characteristics are stated. From a practical point of view the increase of the resistance of fibrocomposite while maintaining its integrity in conditions of high values of plastic deformations opens up the possibility of using such materials for repairing damaged superstructures and ceilings, durable (heat and bio - resistant) sealing of joints of precast reinforced concrete structures.
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