UNIVERSITAS BINA DARMA, UNIVERSITAS BINA DARMA (2022) CYCLIC BEHAVIOUR OF SANDWICH CONCRETE BEAM UNDER FLEXURAL LOADING. CYCLIC BEHAVIOUR OF SANDWICH CONCRETE BEAM UNDER FLEXURAL LOADING.
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Abstract
The theories relating to the structural analysis shown that the part of the concrete structural elements whose strength works maximally in resisting the bending force is in the compressive region. Therefore, it is inefficient if the core part of the concrete is made of the same type of concrete. The sandwich concrete consisting of different layers between the center (core) concrete and the surface (skin) layers became the basic idea in this study. With this sandwich concrete, we can streamline the design of structural elements made of concrete by using high strength concrete in the skin layer while the ordinary and lightweight concrete in the core layer. The core layer is made of lightweight concrete with the compressive strength of 30 MPa. It is sandwiched between two skin layers made of normal concrete with compressive strength 50 MPa. The connector is applied to connect different composite layers in order to transfer the longitudinal shear force in the beam. Moreover, the cyclic loading test was conducted on three kinds of beam specimen with dimensions of 2100 mm in length, 100 mm width and depth of 200 mm. Differences in the cyclic flexural behavior of sandwich beams with respect to the connector and compressive strength of the core layers were monitored in terms of cracking patterns, stiffness and strength degradation, energy dissipation and ductility. The obtained results showed that the cyclic load of the beam determined the degradation of stiffness and strength in every cyclic due to the slip at the lower load (pinching effect). The connector and the compressive strength of the center layer of the beam established the increasing of dissipation energy. Observation on the ductility of the flexural beams shows that ductility response of the beams is specified by the loading systems, the connector in the middle part of the concrete beams, and the compressive strength of the central layer concrete.
| Item Type: | Article |
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| Subjects: | L Education > L Education (General) |
| Divisions: | Faculty of Law, Arts and Social Sciences > School of Art |
| Depositing User: | Mr Edi Surya Negara |
| Date Deposited: | 16 Jun 2022 01:27 |
| Last Modified: | 16 Jun 2022 01:27 |
| URI: | http://eprints.binadarma.ac.id/id/eprint/11072 |
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