The Placement Position of Hollow Cores in the Ideal Longitudinal Direction on the Reinfoced Concrete Beam

DOI

10.2991/ahe.k.210205.059How to use a DOI?

Keywords

hollow core, modulus of rupture

Abstract

Reinforced concrete beam is a structure that designed to restrain the bending moment, torsional moment, axial force and shear force, made of concrete which functions to withstand compressive strength and reinforcing steel to withstand flexural strength. However, of reality many other utilities as: water supply, sewerage, power lines, telephone cables, air conditioning systems, computer networks and so on, attached to the beam, so that it looks less aesthetic and protected. If the utility is placed in the block space by making a hole in the beam in the compressed area, it will reduce the compression strength. Therefore, it will be investigated the strategic position of the hollow cores longitudinal direction, so that the strength of the beam is not reduced, it can function as a structure that holds and distributes the loads that work on it, and as a support for utility. The purpose of this research was to make a reinforced concrete beam, apart from it has function as a structure that holds and distributes the loads that work on it, it also has function as a utility support by utilizing the space in the structural beam. To achieve the purpose of this research, 10 specimens of 100x150x750 mm beam with 4 variations in placement of hollow cores made of Polyvinyl Chloride with 1 inch diameter, which is compared to a beam without a hollow core. Testing of reinforced concrete beams is carried out based on the standard simple beam with centre-point loading, after curing for 28 days to obtain data: ultimate load, modulus of rupture (MOR) that can be withheld by blocks, modulus of elasticity (MOE) and cracked fields that occurs beam. Based on the results of the research has been undertaken, it indicated that the position of hollow care that is put on the tensile zone in the longitudinal direction of the beam increased the stiffness (MOE) on the beam, ultimate load and modulus of rupture (MOR) which the beam can withstand. However, a reinforced Concrete beam with a hollow core of 100 mm from the top of the beam decreased stiffness. The collapse that occurred in the reinforced concrete beam with a hollow core started from the cracked at the very bottom of the beam, in the middle of the span in the tensile zone.

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  - Sumiati
AU  - Mahmuda
AU  - Ahmad Syapawi
PY  - 2021
DA  - 2021/02/09
TI  - The Placement Position of Hollow Cores in the Ideal Longitudinal Direction on the Reinfoced Concrete Beam
BT  - Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020)
PB  - Atlantis Press
SP  - 352
EP  - 357
SN  - 2589-4943
UR  - https://doi.org/10.2991/ahe.k.210205.059
DO  - 10.2991/ahe.k.210205.059
ID  - 2021
ER  -