Structural Behaviour of Spherical Hollow Reinforced Concrete Beam under Flexural Loading

Murtiadi, Suryawan and Akmaluddin, A and Maskimi, M (2017) Structural Behaviour of Spherical Hollow Reinforced Concrete Beam under Flexural Loading. Proceedings International Conference on Science and Technology (ICST 2017), 1. pp. 159-162. ISSN 978-602-61265-1-1

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This research was conducted with aims to determine and understand the behaviour of spherical hollow reinforced concrete beam. Five hollow reinforced concrete beams were tested with variations of 1, 3, 5, 7 and 9 spheres resulted the volume ratios of 99%, 98%, 97%, 95% and 94%, respectively. Beams dimension were 200 x 300 mm with effective length of 3000 mm. Steel reinforcements were 3D13 in tension and 2D10 in compression linked together with D10-20 stirrups. The concrete strength of 22 MPa and steel yield-strength of 390 MPawas considered. In addition, one solid beam was also tested as a standard beam. Flexural static loads were applied according to SNI testing standardmethod with two points of loading. Test results indicated that the fracture pattern of all specimens was classified as bending cracks. The presence of spherical hollow has insignificant effect to the structural behaviour of reinforced concrete beam. Cracking moments has 83% decreased and the ultimate moment has only95% decreased. Ductility of the hollow beams was also decreased but it is still acceptable since the ductility ≥2. Therefore, in order to reduce self -weight of reinforced concrete, the use of spherical hollow beam is highly recommended.

Item Type: Article
Keywords (Kata Kunci): Concrete beam, hollow sphere, structural behaviour, moment capacity, ductility
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Fakultas Teknik
Depositing User: Dr. Suryawan Murtiadi
Date Deposited: 30 Mar 2023 04:31
Last Modified: 30 Mar 2023 04:31

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