Murtiadi, Suryawan and Akmaluddin, A and Maskimi, M (2017) Structural Behaviour of Spherical Hollow Reinforced Concrete Beam under Flexural Loading. In: The 2 nd International Conference on Science and Technology 2017 “Joint International Conference on Science and Technology in The Tropic”, 23-24 August 2017, Mataram.
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Abstract
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 MPa was considered. In addition, one solid beam was also tested as a standard beam. Flexural static loads were applied according to SNI testing standard method 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: | Conference or Workshop Item (Paper) |
|---|---|
| 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 A Akmaluddin |
| Date Deposited: | 10 Jun 2020 07:15 |
| Last Modified: | 10 Jun 2020 07:15 |
| URI: | http://eprints.unram.ac.id/id/eprint/15671 |
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