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Information × Registration Number 0207U004972, 0104U005234 , R & D reports Title To develop specifications and recommendations of connection reinforcement bars by reductions of cylinders popup.stage_title Head Ivanytskyj Jaroslav Lavrentiyovych, Registration Date 31-10-2007 Organization Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine popup.description2 Method and technology of connection of thermo-strengthened re-bars by a roughing hob is developed. Static durability of such connection is greater on 20-30 %, and fatigue - on 40% from the electric welding. It is projected and made the portable device for connection of thermo-strengthened re-bars of D12 and 14 mm, by a roughing hob directly on a construction site. Methodic guidelines and technical conditions are developed, and technology of connection of thermo-strengthened re-bars by a roughing hob is inculcated in "Ukrautodor". It is recommended to traveling organizations to inculcate technology of connection at building of new and repair of existent overpasses Product Description popup.authors popup.nrat_date 2020-04-02 Close