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All Journal Jurnal Dimensi Pratama Teknik Sipil Civil Engineering Dimension
Alvin Halim, Alvin
Mahasiswa Program Studi Teknik Sipil Universitas Kristen Petra
Civil Engineering, Building, Construction & Architecture

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Journal : Civil Engineering Dimension

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Flexural and Shear Behavior of 3D Printed Reinforced Concrete Beams: An Experimental Study Budiman, Franky; Halim, Alvin; Chandra, Jimmy; Pudjisuryadi, Pamuda
Civil Engineering Dimension Vol. 25 No. 1 (2023): MARCH 2023
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.25.1.1-9

Abstract

3D Concrete Printing (3DCP) provides many advantages for construction industry especially on productivity, waste, labor, and environment. Many researches have been conducted on the material development for 3DCP. However, there are not many researches which study the structural behavior of 3DCP. This experimental research aims to analyze flexural and shear behavior of 3D printed reinforced concrete beams. Five longitudinal reinforcement ratios were used to analyze crack patterns, failure mode, ductility, and capacity of those beams. The experimental results were then compared with analytical results by using ACI design code. The results show that higher longitudinal reinforcement ratio yields higher flexural and shear capacity of 3DCP beams. Due to layer-by-layer printing process, 3DCP beams are prone to local failure of filaments. Placement of longitudinal reinforcement might initiate macroscopic voids which could cause slippage and sudden drop on the capacity. Furthermore, ACI code underestimates the capacity of 3DCP beams failing in shear by some margins.
Experimental Study of Bond Strength of Embedded Steel Reinforcement in Vibration-Based 3D Printed Concrete Mortar Chandra, Jimmy; Halim, Alvin; Budiman, Franky; Pudjisuryadi, Pamuda; Antoni, Antoni
Civil Engineering Dimension Vol. 26 No. 2 (2024): SEPTEMBER 2024
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.26.2.130-137

Abstract

Many new construction techniques have been developed in recent years, one of them is Three-Dimensional Concrete Printing (3DCP). It offers many advantages such as reduced human error, minimum manpower usage, and shorter construction period. This technique, however, still needs to be studied further to ensure good quality of constructions. This experimental study aims to investigate the bond strength of embedded steel reinforcement in vibration-based 3DCP mortar. The parameters varied are reinforcement diameter and direction of printing. It is found that average bond stress decreases as reinforcement diameter increases. Furthermore, 3DCP specimens with bars placed parallel to the printing direction have relatively higher bond stresses as compared to the ones with bars placed perpendicularly. As compared to conventional cast specimens, 3DCP specimens have higher bond stresses which might be due to vibration-based 3DCP mortar. Moreover, building code formulas significantly underestimate the bond stresses of vibration-based 3DCP specimens tested in this study.
Co-Authors Antoni Antoni Budiman, Franky Chandra, Jimmy Pamuda Pudjisuryadi Sugie Prawono