Use of composite armature In ukraine and in the world

Abstract

The main task of a modern design of infrastructural objects is the choice of a type of reinforcement which provides high level of a reliability and a strength in concrete matrix to prolong life time of objects. The international and Ukrainian experience in the area of using composite and combined reinforcement was observed this article. Perspectives and recommendations for further development of the composite reinforcement usage in road, infrastructure and housing construction were announced this article. Every year a great deal of new building materials appear on the construction markets. The composite reinforcement of concrete (with using of glass, basalt, or carbon fiber) is one of promising technologies. FRP-rebar has some advantages over metal counterparts. Unfortunately, the mechanical and other properties of the new material are quite different from the metal analogue, which considerably limits its wide use in construction practice. For example, composite fittings do not withstand high operating temperatures and have a lower modulus of elasticity than metal. This fact places certain restrictions on its widespread use in the reinforcement of various objects, which can be excessively deformed, which can lead to undesirable cracks. Such deficiencies often deter builders from using it. The main advantages of composite fittings are: high corrosion resistance, durability, ecology, easy transportation, light weight and others. One possible solution to the problem of the rational use of composite reinforcement in construction is the combination of composite and metal reinforcement, which allows the use advantages of both types of armature. Since the 1980s, composite armature have been manufactured and used in the United States, Canada, Europe, Japan and other countries including Ukraine. The annual increase in the number and scale of infrastructure projects in Ukraine with using composite armature over a period of 10 years shows a steady trend towards the extension of the service life of new and repaired facilities with a reduction in owner’s costs for maintenance of the object during the service life.