The Use of Cold-Formed Steel as a Substitute for Reinforcement on Structural of Lightweight Concrete Beams

DOI

10.2991/ahe.k.210205.050How to use a DOI?

Keywords

Cold-formed steel, modulus of rupture, modulus of elasticity

Abstract

Cold-formed steel has the advantage such as it is not flammable and eaten by termite, its installation is relatively fast and has almost no expansion and shrinkage values. However, it has disadvantages when it is exposed directly, apart from looking less attractive, it can also cause post-buckling behavior when the ultimate strength occurs. This research will use cold-formed steel C-Section type Galvanized and Galvalume, as a substitute for reinforcing steel in a reinforced lightweight Concrete beam, so that a lightweight beam with cold-formed steel reinforcing will be obtained. The aim of this research was to obtain the ultimate load and modulus of rupture (MOR) that can be detained by the beam and the stiffness (MOE) and cracked fields that occur in lightweight concrete beams, 2 specimen beams will be made each with variations: formed steel C-section beam with nail bolt (fig. 2.c), Cold-formed steel C-section beam with nail bolt and three-stiffeners (fig. 2.d) compared to reinforced lightweight concrete beams (fig. 2.a). Lightweight concrete used has a compression strength (fc ± 20 MPa) and a density of ± 1825 Kg/m3. The test of reinforced lightweight concrete beams undertaken after treatment on 28 days based on the standard simple beam with center-point loading test. Based on the results of the research that has been done, it indicated that he use of cold-formed steel as a substitute for reinforcement in lightweight concrete beams would increase the stiffness (MOE) of the beam, ultimate load and modulus of rupture (MOR) which the beam can withstand. Collapse that occurred in lightweight concrete beam Cold-formed steel C-section and concrete beam of reinforced steel, it started from the cracked at the very bottom of the beam, in the middle of the span in the tensile area.

Copyright

© 2021, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Mahmuda
AU  - Revias
AU  - Siswa Indra
AU  - Sumiati
PY  - 2021
DA  - 2021/02/09
TI  - The Use of Cold-Formed Steel as a Substitute for Reinforcement on Structural of Lightweight Concrete Beams
BT  - Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020)
PB  - Atlantis Press
SP  - 294
EP  - 299
SN  - 2589-4943
UR  - https://doi.org/10.2991/ahe.k.210205.050
DO  - 10.2991/ahe.k.210205.050
ID  - 2021
ER  -