Compressed tube-concrete elements with the high-strength compression core and with fibreglass shell

• Published in: IOP conference series. Materials Science and Engineering 2019-12, Vol.687 (3), p.33016
• Main Authors: Krishan, A L, Narkevich, M Yu, Sagadatov, A I
• Format: Article
• Language: English
• Subjects: Compression tests; Compressive strength; Concrete; Deformation effects; Expansive concrete; Fiberglass; Formability; High strength; Industrial space; Reinforcement; Smart growth
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/687/3/033016

The aim of the work was to assess the strength and deformability of compressed concrete elements with a core of high-strength self-stressing concrete, with strength grade of concrete C80 and fibreglass shell. The concrete core was carried out both with spiral reinforcement of the concrete core and without it. The methodology for testing two series of samples of compressed tube-concrete elements for central compression is described. Comparative data on the breaking load of both series of samples, as well as graphs of relative deformations in the axial and circumferential directions depending on the relative loading levels are presented. It was experimentally established that the presence of spiral reinforcement for 1.8% increased the strength of compressed concrete elements by 9% and increased the effect of the hooping by 11%. The limiting axial deformations increased about 1.5 times. Thus, the device of the spiral reinforcement of the concrete core is one of the rational ways to increase the operation efficiency of compressed concrete elements with fibreglass shell.