TECHNOLOGY OF MANUFACTURING COMPOSITE VALVES OF A PERIODIC PROFILE

Abstract

The widespread use of composites was restrained, mainly due to the lack of industrial technology that would allow mass production of products with a complex configuration with the required dimensional accuracy.The issues of creating a technology for the production of glass and basalt plastic reinforcement of a periodic profile for the reinforcement of cement concrete and the determination of the chemical resistance of composite reinforcement are considered.The technology was based on the formation of a reinforcing bar by pulling method - a technology that combines the broaching of pre-impregnated with a binder of continuous reinforcing fiber with its winding threads of glass, basalt or carbon fiber in a single technological non-filter process. The technology for producing a rebar by the method of non-filtering rolltrusion is a practically waste-free and high-performance process due to its continuity. The principal differences of the proposed reinforcement is the presence throughout the entire length of the main (power) cylindrical composite rod and standing anchoring - a spirally deformed layer on the surface of the reinforcing rod of the same composite, but with a smaller percentage of reinforcing filler.It has been established that composite reinforcement can be used for the reinforcement of concrete exposed to acidic and alkaline corrosive media, including concrete, used for the construction of sewage treatment plants.The research results form the basis for the development of guidelines for the design and manufacture of concrete structures with non-metallic composite reinforcement based on basalt and glass roving.