DUCTILITY IMPROVEMENT OF DEEP BEAM BY NYLON MESH CONFINEMENT

Susilorini, Retno (2010) DUCTILITY IMPROVEMENT OF DEEP BEAM BY NYLON MESH CONFINEMENT. In: Enhancing Disaster Prevention and Mitigation. UII, Yogyakarta.

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Abstract

Indonesia is earthquake prone area which needs awareness of disaster reducing efforts. One effort to provide earthquake resistant building is to serve ductile concrete structure member such as beam. For recent time, the confinement has become important way in improving ductility of concrete beam. This paper wants to deliver how the nylon mesh confinement can effectively improve the ductility improvement of deep beam. As comparison, it is also conducted some specimens confined by expanded metal sheet. The research conducted experimentally by some deep beam specimens with specification: f’ c design = 30 MPa, b = 10 cm, d = 20 cm, a = 20 cm, and L = 60 cm; some confined by nylon mesh and some confined by expanded metal sheet. The confinement made of nylon mesh with mesh spacing of 5 cm. Nylon mesh consists of nylon fibers with diameter of 1.1 mm which are assembled to be mesh. The specimens are tested by third point flexural beam test. The research meets conclusions: (1) The deep beams using nylon mesh confinement improves utlimate load significantly, up to 150%, compared to unconfined one while its ultimate load is 20% higher than the ones using expanded metal sheet; (2) The modulus of rupture of deep beams using nylon mesh confinement is about 15% higher compared to beams using expanded metal sheet confinement and 230% higher than unconfined deep beams, and (3) It is proved that nylon mesh confinement can improve ductility of deep beam significantly, hence the deep beams confined by nylon mesh perform as earthquake resistant concrete structure member.

Item Type: Book Section
Subjects: 600 Technology (Applied sciences) > 620 Engineering > 624 Civil engineering > Civil Engineering > Concrete
Divisions: Faculty of Engineering > Department of Civil Engineering
Depositing User: Mrs Rikarda Ratih
Date Deposited: 30 Aug 2018 04:01
Last Modified: 30 Aug 2018 04:01
URI: http://repository.unika.ac.id/id/eprint/16888

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